View Full Version : new exhaust
dan68anderson
Tue, August 4th, 2009, 08:46 PM
i just ordered a new cat-back exhaust, do my custom tunes need to be edited at all?
JWBFX4
Tue, August 4th, 2009, 10:14 PM
No as long as its from the cats back.
If you did anything like headers or hi flows or x/h pipes it would need to be.
Jackpine
Tue, August 4th, 2009, 11:59 PM
No as long as its from the cats back.
If you did anything like headers or hi flows or x/h pipes it would need to be.
Dang! Everyone's trying to put me out of business! :thumbs up yellow: Not much I can add to that.
- Jack
88Racing
Wed, August 5th, 2009, 12:18 AM
The only thing I will do is define what type of headers.
Shorty header-no tune adj
Long tube header-tune adj
Anything cat back is ok and will not need tune to be adjusted.
But do not exceed these pipe sizes
Si/so 3" max
Si/do 3" in 2.5" out
If you go bigger than these you will start to rob the motor of it's back pressure and you may lose low end torque.
Lars:2thumbs:
dan68anderson
Wed, August 5th, 2009, 06:14 PM
thanks for the responses!
dan68anderson
Wed, August 5th, 2009, 06:21 PM
88Racing I had already ordered a Banks Monster Exhaust which has a 3" intermediate pipe and 3.5" tailpipe. It claims to cut backpressure up to 79% and increase flow up to 138%. Is this going to kill my low end torque?
By the way it is a SI/DO
88Racing
Wed, August 5th, 2009, 11:30 PM
88Racing I had already ordered a Banks Monster Exhaust which has a 3" intermediate pipe and 3.5" tailpipe. It claims to cut backpressure up to 79% and increase flow up to 138%. Is this going to kill my low end torque?
By the way it is a SI/DO
If you guys reading this ever wonder why Banks stuff is so expensive it's because of their r&d on a product.
I went to the site and examined what you had ordered and it's a great product.
They did the exhaust design different than most others. The pipe y's after the muffler. So basically they are using the same muffler for the si/do and the si/so. Other companies use the muffler to split the exhaust.
It should make the truck sound great after breaking it in, in about 2 weeks.
Lars:2thumbs:
dan68anderson
Thu, August 6th, 2009, 05:37 PM
lars i just want to thank you for taking the time to research that for me! ill let you know how it sounds and performs:2thumbs: