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1999-2004 Saleen Mustang For the SN-95 New Edge platform. Be sure to specify year, model and equipment if asking for help.

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  #1  
Old 10-25-2010
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Default Long tube header HP gains?

I am close to finishing the final mods to my 03 and have decided to install longtube headers to help relieve some back pressure and increase flow. I have hit a plateau with my most recent mods and am convinced this will get things back on track. The headers i will be installing are ceramic coated Macs. Also, emissions testing is not an issue here, so I will be removing the cats and replacing them with a Mac offroad X pipe !

My tuner/buddy recently did this exact install on an N/A and he convinced me to pull the k memeber and come in from the bottom. The down side is that removing the front end will require and alignment when we are done. The good news is he will be helping for free, as he owes me several favors... I will post some pictures through out the process.

I am anticipating seeing a decrease on the boost gauge and a nice gain at the wheels. I realize that most of us don't dyno between every mod, so I'd be surprised if anyone has done a before and after...just the same i'd love to hear your results or your best guess for your set up.

My mods are in my signature and my most recent dyno puts me at 365/377. I know that might seem low to a few, so before we get into that same old arguement keep in mind that is SAE corrected and there is no such thing as a good air day @ 4000'. Even w/ a 2.80" upper pulley i am only making 10psi due to the air density (or lack of it!!).

I'd be disapointed if i don't see 380/400 with the headers...thoughts??
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03S281SC 03-269
Tunable induction CAI|2.8 pulley|39# Injectors|05 Mustang GT pump|90mm MAF|75MM BBK-TB|Mosaleen idler|MAC Long tube headers|Mac Off road X|LFP-H/E and tank|Chicane I/C|5gpm pump|373 FRPP gears|NT555R 305/35ZR1|MGW shifter|FRPP Alum driveshaft|N2MB two step
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03-269 S281SC
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92 LX convertible
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  #2  
Old 10-25-2010
02S/Csaleen 02S/Csaleen is offline
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Sounds awesome man. I have bassani mid-lengths just sitting in my garage (for a year now). They were on my 02 N/A GT. I picked up 14rwhp on my N/A with no cats. I believe you should pick up 20+ with the S/C.

As soon as I stop being lazy and put these on my saleen, I will let you all know what my gains from the headers were.
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  #3  
Old 10-25-2010
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Quote:
Originally Posted by 02S/Csaleen View Post
Sounds awesome man. I have bassani mid-lengths just sitting in my garage (for a year now). They were on my 02 N/A GT. I picked up 14rwhp on my N/A with no cats. I believe you should pick up 20+ with the S/C.

As soon as I stop being lazy and put these on my saleen, I will let you all know what my gains from the headers were.
20+ would be sweet! What made you decide to go w/ the mid lengths vs long tubes...the install?
Thanks,
Scott
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03S281SC 03-269
Tunable induction CAI|2.8 pulley|39# Injectors|05 Mustang GT pump|90mm MAF|75MM BBK-TB|Mosaleen idler|MAC Long tube headers|Mac Off road X|LFP-H/E and tank|Chicane I/C|5gpm pump|373 FRPP gears|NT555R 305/35ZR1|MGW shifter|FRPP Alum driveshaft|N2MB two step
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92 LX convertible
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  #4  
Old 10-25-2010
02S/Csaleen 02S/Csaleen is offline
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Quote:
Originally Posted by Wireman View Post
20+ would be sweet! What made you decide to go w/ the mid lengths vs long tubes...the install?
Thanks,
Scott

Well I bought stage 3 heads/cams for $1200 2 years ago and this was thrown in to complete the deal.
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  #5  
Old 10-28-2010
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Here are some pictures of the headers and off-road pipe.
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03S281SC 03-269
Tunable induction CAI|2.8 pulley|39# Injectors|05 Mustang GT pump|90mm MAF|75MM BBK-TB|Mosaleen idler|MAC Long tube headers|Mac Off road X|LFP-H/E and tank|Chicane I/C|5gpm pump|373 FRPP gears|NT555R 305/35ZR1|MGW shifter|FRPP Alum driveshaft|N2MB two step
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  #6  
Old 10-29-2010
OxfordS281 OxfordS281 is offline
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set up looks awesome. are you still running stock catback? post some exhaust vids once its all installed!
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  #7  
Old 10-29-2010
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Quote:
Originally Posted by OxfordS281 View Post
set up looks awesome. are you still running stock catback? post some exhaust vids once its all installed!
Yep, stock Saleen.
I will be sure to post a sound or video clip when i'm done.
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03S281SC 03-269
Tunable induction CAI|2.8 pulley|39# Injectors|05 Mustang GT pump|90mm MAF|75MM BBK-TB|Mosaleen idler|MAC Long tube headers|Mac Off road X|LFP-H/E and tank|Chicane I/C|5gpm pump|373 FRPP gears|NT555R 305/35ZR1|MGW shifter|FRPP Alum driveshaft|N2MB two step
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  #8  
Old 11-13-2010
460hpmach1 460hpmach1 is offline
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those headers in the pictures look so beautiful i don't know if i could install em on the car or put em up in a display case to just look at

ASh
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  #9  
Old 11-23-2010
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I need an additional O2 sensor for my wideband to monitor air fuel ratios. I added this bung to replace the current one i have.

There are four factory O2s. Two before and two after the cats. Even though the post cat O2s will be eliminated from the tune, i will replace them in the new x-pipe. This will require extensions on the wires. All this hassel is in case i go back to stock some day.

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Here is a close up of the new bung a friend installed...dude can weld!
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03S281SC 03-269
Tunable induction CAI|2.8 pulley|39# Injectors|05 Mustang GT pump|90mm MAF|75MM BBK-TB|Mosaleen idler|MAC Long tube headers|Mac Off road X|LFP-H/E and tank|Chicane I/C|5gpm pump|373 FRPP gears|NT555R 305/35ZR1|MGW shifter|FRPP Alum driveshaft|N2MB two step
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  #10  
Old 01-15-2011
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Ok...finally got around to working on the header swap. I did a before video of the exhaust that i will post that after the project is complete. Here are the pictures of todays work. The enitre process of removing the old exhaust and the K-member took less then 4 hours. Not bad at all!
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03S281SC 03-269
Tunable induction CAI|2.8 pulley|39# Injectors|05 Mustang GT pump|90mm MAF|75MM BBK-TB|Mosaleen idler|MAC Long tube headers|Mac Off road X|LFP-H/E and tank|Chicane I/C|5gpm pump|373 FRPP gears|NT555R 305/35ZR1|MGW shifter|FRPP Alum driveshaft|N2MB two step
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  #11  
Old 01-16-2011
RISALEEN281 RISALEEN281 is offline
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Nice pics! Keep us updated...

Couldn't help but notice your trust in those jackstands
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  #12  
Old 01-16-2011
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Thanks, will do.

Don't worry... no hero here! What i lack in common sense i make up for w/ fear... haha!
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03S281SC 03-269
Tunable induction CAI|2.8 pulley|39# Injectors|05 Mustang GT pump|90mm MAF|75MM BBK-TB|Mosaleen idler|MAC Long tube headers|Mac Off road X|LFP-H/E and tank|Chicane I/C|5gpm pump|373 FRPP gears|NT555R 305/35ZR1|MGW shifter|FRPP Alum driveshaft|N2MB two step
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  #13  
Old 01-16-2011
Coderedsaleen Coderedsaleen is offline
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Quote:
Originally Posted by RISALEEN281 View Post
Nice pics! Keep us updated...

Couldn't help but notice your trust in those jackstands
Not to mention, it looks like the garage door is preventing any movement backward.

Quote:
Originally Posted by Wireman View Post
Thanks, will do.

Don't worry... no hero here! What i lack in common sense i make up for w/ fear... haha!
LOL, I do the same when I do all my work to. Can't wait to get a MaxJax car lift. In the mean time I will just use the stands.

When you took the k-member out what did you use to support the engine? Just that single bottle jack?
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  #14  
Old 01-16-2011
OxfordS281 OxfordS281 is offline
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nice work!! that k member looks HUGE... nice job on the removal. I would love to do the same but replace the k member with a maximum motorsports kit, or one like it to shave off some weight, and possibly go turbo! looking forward to the videos.
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  #15  
Old 01-16-2011
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Quote:
Originally Posted by Coderedsaleen View Post
When you took the k-member out what did you use to support the engine? Just that single bottle jack?
The bottle jack is on the crank pulley and there is a jackstand on the front of the trans. The picture was right after we slid it out..

Quote:
Originally Posted by OxfordS281 View Post
nice work!! that k member looks HUGE... nice job on the removal. I would love to do the same but replace the k member with a maximum motorsports kit, or one like it to shave off some weight, and possibly go turbo! looking forward to the videos.
Thanks. Yeah its a pig! I'd guess an easy 200lbs and it would be a great place to shave some weight.
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03S281SC 03-269
Tunable induction CAI|2.8 pulley|39# Injectors|05 Mustang GT pump|90mm MAF|75MM BBK-TB|Mosaleen idler|MAC Long tube headers|Mac Off road X|LFP-H/E and tank|Chicane I/C|5gpm pump|373 FRPP gears|NT555R 305/35ZR1|MGW shifter|FRPP Alum driveshaft|N2MB two step
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  #16  
Old 01-20-2011
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While i was waiting on the gaskets i installed a 2 step launch control. I went w/ the N2MB.

Tonight i installed the the headers. It seems it would be impossible to install longtubes w/o removing the k member...should have time to finish putting it back together Saturday i hope. Here are some pics of the headers installed.

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03S281SC 03-269
Tunable induction CAI|2.8 pulley|39# Injectors|05 Mustang GT pump|90mm MAF|75MM BBK-TB|Mosaleen idler|MAC Long tube headers|Mac Off road X|LFP-H/E and tank|Chicane I/C|5gpm pump|373 FRPP gears|NT555R 305/35ZR1|MGW shifter|FRPP Alum driveshaft|N2MB two step
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03-269 S281SC
92 LX coupe
92 LX convertible
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  #17  
Old 01-21-2011
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looking good i think you will be happy with the gains especially after a retune
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00gt 10k on the clock saleen s4 blower and full saleen body kit. 2.76 upper, 42's , 90mm maf, 75mm tb, focus pump. high flow cats, stock gt exhaust, 31splines and 373's. best et without body kit was 11.9 at 116mph on et streets. 1.60 sixty foot. way more to come out of this combo sct tuned by me.
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  #18  
Old 01-21-2011
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LOVE my bassani setup.... Think your gonna like yours too!!!
Interested to see what you think of it since it since you already had the other mods.......I did all my mods at once, so my results are scewed!
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  #19  
Old 01-21-2011
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Quote:
Originally Posted by SonicBlue View Post
\Interested to see what you think of it since it since you already had the other mods.......I did all my mods at once, so my results are scewed!
My **** dyno hasn't proved to be too accurate in the past and i havent driven the car at all since November. But i will give you my best guess for sure!
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03S281SC 03-269
Tunable induction CAI|2.8 pulley|39# Injectors|05 Mustang GT pump|90mm MAF|75MM BBK-TB|Mosaleen idler|MAC Long tube headers|Mac Off road X|LFP-H/E and tank|Chicane I/C|5gpm pump|373 FRPP gears|NT555R 305/35ZR1|MGW shifter|FRPP Alum driveshaft|N2MB two step
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  #20  
Old 01-23-2011
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Finished putting the car back together and loaded the new tune today. I won't be driving it until the roads dry up, but here is a quick video of the car after the longtubes and off road x-pipe were installed. The video is hard to see because its dark and you can tell its windy, but the sound is good enough to get the general idea. Note the 2 step at the end of the video. It's set @ 3900 rpm....enjoy!!

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03S281SC 03-269
Tunable induction CAI|2.8 pulley|39# Injectors|05 Mustang GT pump|90mm MAF|75MM BBK-TB|Mosaleen idler|MAC Long tube headers|Mac Off road X|LFP-H/E and tank|Chicane I/C|5gpm pump|373 FRPP gears|NT555R 305/35ZR1|MGW shifter|FRPP Alum driveshaft|N2MB two step
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92 LX convertible
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  #21  
Old 01-23-2011
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Sounds great!
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  #22  
Old 01-24-2011
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Sweet! Wish I could run that set up...
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  #23  
Old 01-24-2011
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Nice sound! Please post the "before" sound clip so we can hear the difference.

Any idea on your gains?
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  #24  
Old 01-24-2011
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you will be there with a retune
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00gt 10k on the clock saleen s4 blower and full saleen body kit. 2.76 upper, 42's , 90mm maf, 75mm tb, focus pump. high flow cats, stock gt exhaust, 31splines and 373's. best et without body kit was 11.9 at 116mph on et streets. 1.60 sixty foot. way more to come out of this combo sct tuned by me.
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  #25  
Old 01-25-2011
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Quote:
Originally Posted by eviligloo View Post
Nice sound! Please post the "before" sound clip so we can hear the difference.

Any idea on your gains?
I haven't had a chance to drive it yet, but i will be sure to give you some feed back. I think a resonable expectation for gains would be +20rwhp.

Here are both videos.

2003 S281SC Stock exhaust

2003 S281SC Long tube headers and off road X-pipe
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03S281SC 03-269
Tunable induction CAI|2.8 pulley|39# Injectors|05 Mustang GT pump|90mm MAF|75MM BBK-TB|Mosaleen idler|MAC Long tube headers|Mac Off road X|LFP-H/E and tank|Chicane I/C|5gpm pump|373 FRPP gears|NT555R 305/35ZR1|MGW shifter|FRPP Alum driveshaft|N2MB two step
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  #26  
Old 01-26-2011
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you are prob correct wireman a few years back i tuned a car with a s4 blower on it with a stock pulley and fuel upgrades and kooks long tubes it was around 375hp 390 torque on a easy tune. your easy going to pick up 20hp, dont forget alot of times you have less heat too around the valves with long tubes and you can run a little more timing as well.
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00gt 10k on the clock saleen s4 blower and full saleen body kit. 2.76 upper, 42's , 90mm maf, 75mm tb, focus pump. high flow cats, stock gt exhaust, 31splines and 373's. best et without body kit was 11.9 at 116mph on et streets. 1.60 sixty foot. way more to come out of this combo sct tuned by me.
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Old 01-26-2011
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Quote:
Originally Posted by disco View Post
dont forget alot of times you have less heat too around the valves with long tubes and you can run a little more timing as well.
Interesting point
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03S281SC 03-269
Tunable induction CAI|2.8 pulley|39# Injectors|05 Mustang GT pump|90mm MAF|75MM BBK-TB|Mosaleen idler|MAC Long tube headers|Mac Off road X|LFP-H/E and tank|Chicane I/C|5gpm pump|373 FRPP gears|NT555R 305/35ZR1|MGW shifter|FRPP Alum driveshaft|N2MB two step
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  #28  
Old 01-28-2011
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Drove the car tonight and here's what i noticed. The car comes on and feels stronger from mid to high rpm, with what seems like a decent gain on the big end (5000 rpm and up). Whats cool is that the boost comes in 1lb or so higher and peaks at 1.5 lbs less, so it is definately flowing better. I would typically see 10.5 lbs max and tonight i saw 9. Thats w/ a 2.80 upper.

Oh yeah...it's loud!
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03S281SC 03-269
Tunable induction CAI|2.8 pulley|39# Injectors|05 Mustang GT pump|90mm MAF|75MM BBK-TB|Mosaleen idler|MAC Long tube headers|Mac Off road X|LFP-H/E and tank|Chicane I/C|5gpm pump|373 FRPP gears|NT555R 305/35ZR1|MGW shifter|FRPP Alum driveshaft|N2MB two step
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92 LX convertible
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  #29  
Old 01-28-2011
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hey wireman you should data log your car where it feels lazy down low i bet your timing is down at the load point.
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00gt 10k on the clock saleen s4 blower and full saleen body kit. 2.76 upper, 42's , 90mm maf, 75mm tb, focus pump. high flow cats, stock gt exhaust, 31splines and 373's. best et without body kit was 11.9 at 116mph on et streets. 1.60 sixty foot. way more to come out of this combo sct tuned by me.
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  #30  
Old 01-28-2011
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Quote:
Originally Posted by disco View Post
hey wireman you should data log your car where it feels lazy down low i bet your timing is down at the load point.
The car doesn't feel lazy in fact it picked up a bit on the bottom. What I'm saying is the majority of the hp gains we see from headers is at higher rpms and that is exactly what it felt like.
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03S281SC 03-269
Tunable induction CAI|2.8 pulley|39# Injectors|05 Mustang GT pump|90mm MAF|75MM BBK-TB|Mosaleen idler|MAC Long tube headers|Mac Off road X|LFP-H/E and tank|Chicane I/C|5gpm pump|373 FRPP gears|NT555R 305/35ZR1|MGW shifter|FRPP Alum driveshaft|N2MB two step
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  #31  
Old 01-30-2011
tennesseemustangperformance tennesseemustangperformance is offline
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Quote:
Originally Posted by eviligloo View Post
Nice sound! Please post the "before" sound clip so we can hear the difference.

Any idea on your gains?
Sorry, I don't have a before and after sound clip, but this should give you a perfect idea of how the car will sound after the swap.

Before (Stock exhaust).
(Start up/ idle) Bummmurrrrr....
(short revs) Vummmmurrrrrrmmmm.... vummmurrrmmmm....
(Going down the road) Muuuurrrrrrrrrrrrr.... (shifting) Murrrrrrrrrrrrrr... (second gear) Murrrrrrrrrrrrrrrrr...

After (Saleen Magnaflow catback, Kooks long tube headers, off road X-pipe)
(Start up/ idle) BAROOOMM... wabba, wabba, wabba, wabba, wabba...
(short revs) Booooroooomm... Waahhh WAAhhhh WAAAHHHHHHHMMM!!!...)
(Going down the road) MURAAAAAAHHHH.... (shifting into second and hammering it) chirp, BUUUUWAHHHHHHHHHHHHHHH!!!!! (going into third) chirp, BUUUUUAAAHHHWAAAHHHHHH!!!!!!!!!!!!!!!


Hope that helped. You're welcome!
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  #32  
Old 01-30-2011
Coderedsaleen Coderedsaleen is offline
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Join Date: Jan 2010
Location: Virginia
Posts: 1,472
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Quote:
Originally Posted by tennesseemustangperformance View Post
Sorry, I don't have a before and after sound clip, but this should give you a perfect idea of how the car will sound after the swap.

Before (Stock exhaust).
(Start up/ idle) Bummmurrrrr....
(short revs) Vummmmurrrrrrmmmm.... vummmurrrmmmm....
(Going down the road) Muuuurrrrrrrrrrrrr.... (shifting) Murrrrrrrrrrrrrr... (second gear) Murrrrrrrrrrrrrrrrr...

After (Saleen Magnaflow catback, Kooks long tube headers, off road X-pipe)
(Start up/ idle) BAROOOMM... wabba, wabba, wabba, wabba, wabba...
(short revs) Booooroooomm... Waahhh WAAhhhh WAAAHHHHHHHMMM!!!...)
(Going down the road) MURAAAAAAHHHH.... (shifting into second and hammering it) chirp, BUUUUWAHHHHHHHHHHHHHHH!!!!! (going into third) chirp, BUUUUUAAAHHHWAAAHHHHHH!!!!!!!!!!!!!!!


Hope that helped. You're welcome!
LOL!!!!!!!! That is funny! I like it, made me LMAO!
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  #33  
Old 01-30-2011
Wireman's Avatar
Wireman Wireman is offline
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Join Date: Jan 2009
Location: Billings
Posts: 169
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Quote:
Originally Posted by tennesseemustangperformance View Post
Sorry, I don't have a before and after sound clip, but this should give you a perfect idea of how the car will sound after the swap.

Before (Stock exhaust).
(Start up/ idle) Bummmurrrrr....
(short revs) Vummmmurrrrrrmmmm.... vummmurrrmmmm....
(Going down the road) Muuuurrrrrrrrrrrrr.... (shifting) Murrrrrrrrrrrrrr... (second gear) Murrrrrrrrrrrrrrrrr...

After (Saleen Magnaflow catback, Kooks long tube headers, off road X-pipe)
(Start up/ idle) BAROOOMM... wabba, wabba, wabba, wabba, wabba...
(short revs) Booooroooomm... Waahhh WAAhhhh WAAAHHHHHHHMMM!!!...)
(Going down the road) MURAAAAAAHHHH.... (shifting into second and hammering it) chirp, BUUUUWAHHHHHHHHHHHHHHH!!!!! (going into third) chirp, BUUUUUAAAHHHWAAAHHHHHH!!!!!!!!!!!!!!!


Hope that helped. You're welcome!
Nice! Is that a race gas tune? Lol!
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  #34  
Old 01-31-2011
tennesseemustangperformance tennesseemustangperformance is offline
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Join Date: May 2009
Location: Knoxville, Tennessee
Posts: 931
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Quote:
Originally Posted by Wireman View Post
Nice! Is that a race gas tune? Lol!
Of course it is, couldn't you tell?
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  #35  
Old 01-31-2011
tennesseemustangperformance tennesseemustangperformance is offline
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Join Date: May 2009
Location: Knoxville, Tennessee
Posts: 931
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Quote:
Originally Posted by Coderedsaleen View Post
LOL!!!!!!!! That is funny! I like it, made me LMAO!
Glad I could bring a smile to your face. BTW, I have a friend who has a Honda... it goes....
Bzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz zzz!
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