# racing in Montreal, Canada 3-25-09

**URL:** <https://forums.speedlife.net/t/racing-in-montreal-canada-3-25-09/243092>\
**Category:** Shift518 Automotive\
**Created:** [March 26, 2009, 10:04am UTC](https://forums.speedlife.net/t/racing-in-montreal-canada-3-25-09/243092 "2009-03-26T10:04:32Z")\
**Posts on this page:** 1\
**Showing post:** 41

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**Author:** ![kramerbuccs24](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/kramerbuccs24/32/6397_2.png) [@kramerbuccs24](https://forums.speedlife.net/u/kramerbuccs24)\
**Post date:** [March 26, 2009, 9:35pm UTC](https://forums.speedlife.net/t/racing-in-montreal-canada-3-25-09/243092/41 "2009-03-26T21:35:22Z")

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> [@FS: DVD's and other misc. items](https://forums.speedlife.net/t/fs-dvds-and-other-misc-items/16269/8):
>
> they do

i’m not saying i disagree with him, im just saying that from what i’ve learned (very little compared to others on here), its not so much about needing backpressure as it is having an optimal diameter for the most efficient flow away from the motor. i dont know enough to get into a full fledged debate on it, thats just the “cliff notes” i’ve picked up

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