'80 dual exaust question
Race Director
Joined: Apr 2000
Posts: 17,676
Likes: 201
From: Who says "Nothing is impossible" ? I've been doing nothing for years.
If you really want to increase performance, you need a Turbo Encabulator.
Turbo Encabulator - YouTube
Scott
Turbo Encabulator - YouTube
Scott
Le Mans Master
Joined: Oct 2010
Posts: 6,938
Likes: 848
From: melbourne florida
2023 C3 of the Year Finalist - Modified
this place is full of it, i mean them.back in the day chrysler did a lot of testing of H pipe systems with good results. i however am suspect of x pipe systems.not sure they are anymore than sound control. i have a neighbor with a x pipe in a mustang and it sounds sick, and i don't mean that in a good way. my sidepipes with 2.5" sweet thunder inserts make his car sound like a toyota.
Safety Car
Joined: Jan 2009
Posts: 4,000
Likes: 299
From: New York
Headers Headers with X-pipe
RPM HP TQ RPM HP TQ
HP gain TQgain
3000 219.8 384.7 3000 231.2 404.7 11.4 20.0
3100 224.5 380.4 3100 235.3 398.7 10.8 18.3
3200 229.7 377.0 3200 242.6 398.2 12.9 21.2
3300 234.6 373.4 3300 252.0 401.0 17.4 27.6
3400 240.1 370.9 3400 262.1 404.9 22.0 34.0
3500 246.5 370.0 3500 271.2 406.9 24.7 36.9
3600 255.5 372.8 3600 280.5 409.3 25.0 36.5
3700 269.1 381.9 3700 290.3 412.1 21.2 30.2
3800 283.8 392.3 3800 300.3 415.0 16.5 22.7
3900 295.5 397.9 3900 308.6 415.6 13.1 17.7
4000 307.6 403.9 4000 317.4 416.7 9.8 12.8
4100 320.7 410.8 4100 326.9 418.8 6.2 8.0
4200 332.6 415.9 4200 337.0 421.4 4.4 5.5
4300 343.5 419.5 4300 345.7 422.2 2.2 2.7
4400 351.8 419.9 4400 352.9 421.2 1.1 1.3
4500 358.7 418.7 4500 358.7 418.7 0 0
4600 362.5 413.9 4600 363.7 415.2 1.2 1.3
4700 367.1 410.3 4700 369.5 412.9 2.4 2.6
4800 371.2 406.2 4800 375.8 411.1 4.6 4.9
4900 374.8 401.7 4900 380.1 407.4 5.3 5.7
5000 376.7 395.7 5000 381.8 401.1 5.1 5.4
5100 378.2 389.5 5100 381.1 392.5 2.9 3.0
5200 380.8 384.6 5200 381.5 385.3 0.7 0.7
5300 383.8 380.4 5300 384.0 380.5 0.2 0.1
5400 387.0 376.4 5400 387.7 377.0 0.7 1.4
5500 390.0 372.4 5500 391.9 374.3 1.9 1.9
5600 394.8 370.3 5600 395.6 371.0 0.8 0.7
5700 397.2 366.0 5700 400.0 368.6 2.8 2.6
5800 397.1 359.6 5800 402.9 364.9 5.8 5.3
5900 393.3 350.1 5900 401.2 357.2 7.9 7.1
6000 388.0 339.6 6000 394.8 345.6 6.8 6.0
peak HP gain 25.0 @ 3600 rpm
peak TQ gain 36.9 @ 3500 rpm
AVG. HP from 3000-6000 rpm 7.99
AVG. TQ from 3000-6000 rpm 11.1
AVG. HP from 3000-4500 rpm 25.8
AVG. TQ from 3000-4500 rpm 17.2
You guys can say whatever , a dyno test shows higher numbers , plus the cool factor a dyno cant show is there with an X pipe.
RPM HP TQ RPM HP TQ
HP gain TQgain
3000 219.8 384.7 3000 231.2 404.7 11.4 20.0
3100 224.5 380.4 3100 235.3 398.7 10.8 18.3
3200 229.7 377.0 3200 242.6 398.2 12.9 21.2
3300 234.6 373.4 3300 252.0 401.0 17.4 27.6
3400 240.1 370.9 3400 262.1 404.9 22.0 34.0
3500 246.5 370.0 3500 271.2 406.9 24.7 36.9
3600 255.5 372.8 3600 280.5 409.3 25.0 36.5
3700 269.1 381.9 3700 290.3 412.1 21.2 30.2
3800 283.8 392.3 3800 300.3 415.0 16.5 22.7
3900 295.5 397.9 3900 308.6 415.6 13.1 17.7
4000 307.6 403.9 4000 317.4 416.7 9.8 12.8
4100 320.7 410.8 4100 326.9 418.8 6.2 8.0
4200 332.6 415.9 4200 337.0 421.4 4.4 5.5
4300 343.5 419.5 4300 345.7 422.2 2.2 2.7
4400 351.8 419.9 4400 352.9 421.2 1.1 1.3
4500 358.7 418.7 4500 358.7 418.7 0 0
4600 362.5 413.9 4600 363.7 415.2 1.2 1.3
4700 367.1 410.3 4700 369.5 412.9 2.4 2.6
4800 371.2 406.2 4800 375.8 411.1 4.6 4.9
4900 374.8 401.7 4900 380.1 407.4 5.3 5.7
5000 376.7 395.7 5000 381.8 401.1 5.1 5.4
5100 378.2 389.5 5100 381.1 392.5 2.9 3.0
5200 380.8 384.6 5200 381.5 385.3 0.7 0.7
5300 383.8 380.4 5300 384.0 380.5 0.2 0.1
5400 387.0 376.4 5400 387.7 377.0 0.7 1.4
5500 390.0 372.4 5500 391.9 374.3 1.9 1.9
5600 394.8 370.3 5600 395.6 371.0 0.8 0.7
5700 397.2 366.0 5700 400.0 368.6 2.8 2.6
5800 397.1 359.6 5800 402.9 364.9 5.8 5.3
5900 393.3 350.1 5900 401.2 357.2 7.9 7.1
6000 388.0 339.6 6000 394.8 345.6 6.8 6.0
peak HP gain 25.0 @ 3600 rpm
peak TQ gain 36.9 @ 3500 rpm
AVG. HP from 3000-6000 rpm 7.99
AVG. TQ from 3000-6000 rpm 11.1
AVG. HP from 3000-4500 rpm 25.8
AVG. TQ from 3000-4500 rpm 17.2
You guys can say whatever , a dyno test shows higher numbers , plus the cool factor a dyno cant show is there with an X pipe.
Drifting
Joined: Jul 2009
Posts: 1,534
Likes: 14
From: Dallas-Fort Worth TX
WTH happened to this thread... simple question turned into a debate.
Teem66, yes, the right side is to close to the trans in my opinion. Forget the reason why we did that. So far no issues. I do not have a trans temp gauge.
As for the H-Pipe info that was posted by Teem66 from Flowmaster, that is one of reasons I chose to add an H-pipe, as well as the advice from many others with big HP muscle cars.
Flowmaster recommends it. I doubt all muffler manufacturers do.
deeper mellower tone both inside and outside of the vehicle and helps eliminate “back-rap” on deceleration." This was my main concern and so far I have not had any issues. It sounds tuff and turns heads every where. Startling un-suspecting people at the gas pumps, is always amusing.
Teem66, yes, the right side is to close to the trans in my opinion. Forget the reason why we did that. So far no issues. I do not have a trans temp gauge.
As for the H-Pipe info that was posted by Teem66 from Flowmaster, that is one of reasons I chose to add an H-pipe, as well as the advice from many others with big HP muscle cars.
Flowmaster recommends it. I doubt all muffler manufacturers do.
deeper mellower tone both inside and outside of the vehicle and helps eliminate “back-rap” on deceleration." This was my main concern and so far I have not had any issues. It sounds tuff and turns heads every where. Startling un-suspecting people at the gas pumps, is always amusing.
