# first turbo ZR1

**URL:** <https://forums.speedlife.net/t/first-turbo-zr1/251199>\
**Category:** Shift518 Automotive\
**Created:** [March 29, 2010, 5:48pm UTC](https://forums.speedlife.net/t/first-turbo-zr1/251199 "2010-03-29T17:48:20Z")\
**Posts on this page:** 1\
**Showing post:** 43

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**Author:** ![Eatonualive](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/eatonualive/32/6442_2.png) [@Eatonualive](https://forums.speedlife.net/u/Eatonualive)\
**Post date:** [March 30, 2010, 7:03am UTC](https://forums.speedlife.net/t/first-turbo-zr1/251199/43 "2010-03-30T07:03:58Z")

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> [@New Purchase](https://forums.speedlife.net/t/new-purchase/30502/30):
>
> 19-20 psi is about the max on 93. timing is usually 20-23deg.
> 
> Hard to guage based on that though, a LOT of tuners / owners like to butcher the cobras, and burn up pistons looking for every single HP they can get. DUMB.

keep the boost around 18# and keep the timing lower than 19deg and youll be fine on a cobra mod motor. and im pretty sure it will put down some impressive pump #s for a 281ci motor! then the power level comes into question…but anyways, alot of guys on CF seem to think that this zr1 was the red one that popped its motor for some reason, but the guy denies it. (guy also doesnt drive the car, his 340lb driver does LOL)

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