hey, i have a really bad boost leak its not the bov b/c i keep changing it... when i boost to about 20 psi the boost goes way down and the rpm's go up.. whats going on here?

 

what happens after the rpms go up?

 

Heh, you just assume that's a boost leak? It sounds more like your clutch is slipping. A boost leak would not make your rpms go up.

If in higher gears, when you go WOT from low rpm, and the RPMs shoot up when you hit full boost, then your clutch is slipping.

 

ya my clutch started slippin last week, the way u make it sound dont sound like boost leak

 

here is a test to see if your clutch is ***. get on the freeway put in 5th gear at about 50-55mph and floor it, if your RPM go up and you're not picking speed. your clutch is slipping. i did this test on my car.

 

Vboy, I already said that...

 

my bad Warrtalon, i didn't se your post, anyway just makemy repost of what you said as a breakdown how to Barney style. :-)

 

If you are stock, then the boost will go down as the RPM go up. 21 to 17 pis is close to norm over our power range

 

id like to think its not the clutch.. its a brand new evo 9MR.. and it does it in every gear.

 

that's completely normal. peak boost for evo 9 is around 21 psi and it tapers down to approximately 16psi when it hits redline. if there's a boost leak i don't think you can even hit 20psi.

 

did you mess with the stock intercooler pipes tighten them and see if that helps

 

i was thinking thats what it might be.. im going to go try that.. thanks everyone.

 

I am quoting this again, because it is being ignored. Obviously, the boost tapers down as your RPMs increase, but I'm sure that's not what you're talking about, right? I mean, you didn't think the boost stayed right at the same level from 3500-7000rpm. In 3rd and 4th gear that takes quite a while and the boost doesn't drop right away. When you said "and the rpm's go up," were you just referring to the standard increase of RPM while accelerating? If so, then why mention it? I figured you said it, because the RPMs shoot up right away unnaturally...no?

 

thanks scott yo.. and everyones insites..i found the problume.. the intercooler pipes were a little loose now i have full boost. By the way car isnt stock.... ecutek reflash tuned by sean ivey..... turbo xs turboback exhaust ....walbro fuel pump.... forge bov. -thanks-