# diagnose this problem please

**URL:** <https://forums.speedlife.net/t/diagnose-this-problem-please/134645>\
**Category:** Canada Nissan Automotive\
**Created:** [October 23, 2007, 9:00pm UTC](https://forums.speedlife.net/t/diagnose-this-problem-please/134645 "2007-10-23T21:00:54Z")\
**Posts on this page:** 1\
**Showing post:** 6

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**Author:** ![Terrible\_1](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/terrible_1/32/5562_2.png) [@Terrible\_1](https://forums.speedlife.net/u/Terrible_1)\
**Post date:** [October 24, 2007, 4:00pm UTC](https://forums.speedlife.net/t/diagnose-this-problem-please/134645/6 "2007-10-24T16:00:25Z")

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> [@Firehawk\>\>\>SkrappaR](https://forums.speedlife.net/t/firehawk-skrappar/2373/14):
>
> Least Likely –\> Not enough backpressure. Reduce the size of your exhaust.

Exhaust should not affect anything on a turbo car unless its too small. But i’m still leaning towards you having a vacuum problem

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