Toyspeed.org.nz Message Board

by **Levin** » Thu Feb 16, 2006 9:42 pm

Hey, me again. Just wanting to know what people think is a safe boost level to run in my car (ST185 GT4). I recently installed a boost controller, and am boosting 10psi. So yeah, just curious to know what is the safe max level to run (the car doesnt seem to have a fuel cut btw, boost spiked to about 15psi when I first installed the controller).

Cheers, Tom

by **Alex B** » Thu Feb 16, 2006 10:10 pm

Factory boost is safe

OMG so shiny! · by **Dell'Orto** » Thu Feb 16, 2006 10:49 pm

Take it to a dyno, wind up the boost until the a/f ratios are about 12.5:1, thats safe

by **Levin** » Fri Feb 17, 2006 3:26 pm

hmm im feeling a little confused now

by **mr pad** » Fri Feb 17, 2006 4:16 pm

freeboost it au.

OMG so shiny! · by **Dell'Orto** » Fri Feb 17, 2006 11:44 pm

You cant really say, as whats safe for one car could be dangerously lean on another...fuel pumps, filter, injectors...all that guff can wear out/clog up. The only way to say what is safe is to do like I posted, and have a run on a dyno with a wideband o2 sensor up the tailpipe.
That said, factory boost ought to be plenty safe

by **Levin** » Sun Feb 19, 2006 11:28 am

Ive returned to the factory boost (about 9-8 pound). Who needs high boost if all your doing is going from home to school anyway?

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