when should I see boost?
02-01-2009, 11:42 PM
#21
4th Gear Member
Join Date: Mar 2008
Location: asdf
Posts: 1,600
It's not going to a tuning issue, and I can tell you why. The bypass valve, if working properly, is vacuum actuated, basically, when the area past the throttle body goes into vacuum, the bypass valve opens and starts recirculating the air. That's not a perfect explination, but it will do.
Basically, bottom line, it isn't a tuning issue.
If I were to say anything, I would think that it's actually a case of the OP loosing boost through the exhaust valves. If he doesn't have just the right set of cams, I would say that's a very real possibility, or it could be that the cams might not be timed as efficiently as possible.
Basically, bottom line, it isn't a tuning issue.
If I were to say anything, I would think that it's actually a case of the OP loosing boost through the exhaust valves. If he doesn't have just the right set of cams, I would say that's a very real possibility, or it could be that the cams might not be timed as efficiently as possible.
02-01-2009, 11:53 PM
#25
5th Gear Member
Join Date: Jul 2007
Posts: 3,731
think about it, I'm running the same blower, 16PSI, and a 2v compared to the OP's 4v if I read it correctly. that set up should be worth more than I'm running, 650+rwhp. 50% throttle, your not going to be able to grab traction.
you know that kirk is kidding right? (SVTeeshirt)?
02-02-2009, 05:23 PM
#29
Thread Starter
Join Date: Dec 2008
Location: Florida
Posts: 21
bypass valve
Something definitly sounds really really wrong there. If youre not seeing boost by 4000rpms youre cars power curve is gonna be soooooooo weird so something is not right. I dont know whats wrong but i do know something is not right. What size pulley are you running and what kinda bpv/bov are you running and how strong of a spring is in there??? That could be your problem. My buddy had this problem with his turbo cobra. His bov was stuck open and thats why he wasnt making boost. When he got the bov unstuck and made sure it didnt stick open, he went from making like 8 psi to 30+psi(pegged the gauge). So check your bpv/bov springs to see if its stuck open depending on if your pulley is small enough to make some decent lbs of boost. I might even be posting some bad info but i thought think that some people run bpv/bov's on centri blowers.
02-02-2009, 05:27 PM
#30
Thread Starter
Join Date: Dec 2008
Location: Florida
Posts: 21
I'm only running 460 rwhp
again, i think it may be a simple issue of just missinterpreting how far the OP is pushing in
think about it, I'm running the same blower, 16PSI, and a 2v compared to the OP's 4v if I read it correctly. that set up should be worth more than I'm running, 650+rwhp. 50% throttle, your not going to be able to grab traction.
you know that kirk is kidding right? (SVTeeshirt)?
think about it, I'm running the same blower, 16PSI, and a 2v compared to the OP's 4v if I read it correctly. that set up should be worth more than I'm running, 650+rwhp. 50% throttle, your not going to be able to grab traction.
you know that kirk is kidding right? (SVTeeshirt)?
I feel like there has to be something missing that is keeping the power down.