# 600whp and 10s out of my STI

**URL:** <https://forums.speedlife.net/t/600whp-and-10s-out-of-my-sti/242688>\
**Category:** Shift518 Automotive\
**Created:** [March 10, 2009, 6:47am UTC](https://forums.speedlife.net/t/600whp-and-10s-out-of-my-sti/242688 "2009-03-10T06:47:58Z")\
**Posts on this page:** 1\
**Showing post:** 17

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**Author:** ![jays05](https://avatars.discourse-cdn.com/v4/letter/j/d07c76/32.png) [@jays05](https://forums.speedlife.net/u/jays05)\
**Post date:** [March 10, 2009, 10:57am UTC](https://forums.speedlife.net/t/600whp-and-10s-out-of-my-sti/242688/17 "2009-03-10T10:57:47Z")

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> [@i guess someone doesnt like me...](https://forums.speedlife.net/t/i-guess-someone-doesnt-like-me/15343/16):
>
> After everything you went through, you really deserve this. Congrats man. What boost you running? Be a man. Turn it up to 33PSI or so like we did in my car. 🙂

23-24psi on 93  
26-27psi on vp c16

We tried removing the air filter and adding 2psi boost but the car wouldn’t make any more HP, just more TQ. 26psi = 611whp, 28psi = 613whp. We thought the turbo was maxed out but now I’m wondering if the leaking uppipe gasket had something to do with it.

Thanks guys

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