boost problems
09-14-2008, 01:17 PM
#1
Staging Lane
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boost problems Well, I put the my car on the dyno and I have an STS kit with a front mount. The wastegate has the 5 lb spring in it. just running off the wastegate the car made 4lbs. When I ran it through the STS boost controller ( which I have determined is a piece of crap) the car made 7 lbs, then on the next run it made 6 lbs and then went back to 4lbs. I wanted to put it up to 9 lbs but could not get a reliable boost setting. I was wanting to know if anyone has had this problem and if I get a 10lb spring and a boost controller that works if this will hopefully fix my problem.Also was wanted to know if anyone had a good diagram on how to route the boost controller on the STS kit just make sure I had it routed right. Thanks for the help.
09-14-2008, 01:33 PM
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watch what u wish for...10lbs on a stocker could get ugly. did u atleast upgrade your valve springs? turbo boost should be good for 20-25 hp per psi...200-250 extra rwhp
and kaboom! (in due time) on a stock bottom end. i'm not saying not to do it, just
be sure your bank account is up to the task.
and kaboom! (in due time) on a stock bottom end. i'm not saying not to do it, just
be sure your bank account is up to the task.
09-14-2008, 01:50 PM
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they say 8 is the limit on stock bottom end...
i like to think more is better too...but, i would run it on 5-6psi
for a while to gauge what "normal" should feel like befor
you go extreeem. just my .02
how does the 5lbs feel? or you havent got out on the street yet?
i like to think more is better too...but, i would run it on 5-6psi
for a while to gauge what "normal" should feel like befor
you go extreeem. just my .02
how does the 5lbs feel? or you havent got out on the street yet?
09-14-2008, 06:58 PM
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09-14-2008, 10:23 PM
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Staging Lane
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It is an eddy current dyno. The boost was just up and down because if you even bumped the boost controller it woul change the boost. But I ordered a light blue 8.7 lb spring and a good boost controller tonight. The guy I have tuning it is very good with HP tuners so the tune is the least of my worries its the 95K miles on the car that I am. But like silver said its all about a good tune.
09-15-2008, 03:34 AM
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It could be the WG spring. I had my kit for about a year before the spring must have taken a permanent set and would only make 5.5 instead of 6.5psi. I thought it was because i had dented the crap out of the front pipe (STS does not like eibach pro-kits!) I bought a cheapo ebay manual boost controller and used it to adjust to 6.5 psi again. It worked. Still need to buy a new spring though. Like CanII said, remove the BC and just run straight spring. According to STS you should lose about .75psi through the piping alone plus what you lose through your intercooler.