# back pressure question
**URL:** https://forums.speedlife.net/t/back-pressure-question/73473
**Category:** NYSpeed Automotive
**Created:** [September 13, 2009, 7:59pm UTC](https://forums.speedlife.net/t/back-pressure-question/73473 "2009-09-13T19:59:51Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@ricers\_r\_us](https://forums.speedlife.net/u/ricers_r_us)
#### Post date: [September 13, 2009, 7:59pm UTC](https://forums.speedlife.net/t/back-pressure-question/73473/1 "2009-09-13T19:59:51Z")
im starting an intense project, one of the things that has come up is i have to shorten and modify one of the down tubes. its a v6 twin turbo motor, one turbo for each bank. the steering linkage will be in the way on the drivers side. i am going to custom make my exhaust so i have some options.
each of which the drivers side has to be modified. i dont have the motor yet so i am still planning. all this is going off vague information i found on this swap.
seperate exhaust tubes(one for each bank)
y pipe to single tube
or and x pipe (like the flowmaster kit)
which would be the best? i dont really know anything about back pressures and all that but i dont need a burnt blown or broke turbo or anything else.
---
### Author:  [@EVOXGSR](https://forums.speedlife.net/u/EVOXGSR)
#### Post date: [September 13, 2009, 8:18pm UTC](https://forums.speedlife.net/t/back-pressure-question/73473/2 "2009-09-13T20:18:39Z")
Turbos hate back pressure (hurts spool time, peak boost and hence torque), so the widest most free flowing exhaust is what you want.
---
### Author:  [@Onyx\_Z32](https://forums.speedlife.net/u/Onyx_Z32)
#### Post date: [September 13, 2009, 8:59pm UTC](https://forums.speedlife.net/t/back-pressure-question/73473/3 "2009-09-13T20:59:02Z")
My Z is setup like what you’re trying to build; V6, TT. I have 2 separate exhausts all the way back, but some people run x-pipes. Honestly I haven’t seen any performance difference looking at dyno charts over the years.