No Boost leak, car is boosting at 16-17psi MAX
No Boost leak, car is boosting at 16-17psi MAX
Hello,
I have searched the forums for about a week now with boost issues that other people are having, but I think my problem is different from others.
My car is boosting at 16-17psi then it goes down to 15psi and holds to redline.
The car did run 20-21 psi last year just fine with a cheap ebay mbc I had on for a while, and decided to switch it off to a hallman pro rx MBC and now I have boost problems.
My car is still running with stock turbo and stock waste gate with hallman pro rx boost controller. I have hooked up the source from the turbo nipple instead of doing the BOV-method connection, all vacuum lines are also replaced with new ones. There are a few posts in doing the waste gate mod to turn a bolt/nut a couple times to up the boost, havent tried that yet but do you think that can fix the problem that i have right now? I plan to get this issue fixed so I can install my 10.5 and new o2 housing. Looking to boost my car up to 22-23psi again!
I have searched the forums for about a week now with boost issues that other people are having, but I think my problem is different from others.
My car is boosting at 16-17psi then it goes down to 15psi and holds to redline.
The car did run 20-21 psi last year just fine with a cheap ebay mbc I had on for a while, and decided to switch it off to a hallman pro rx MBC and now I have boost problems.
My car is still running with stock turbo and stock waste gate with hallman pro rx boost controller. I have hooked up the source from the turbo nipple instead of doing the BOV-method connection, all vacuum lines are also replaced with new ones. There are a few posts in doing the waste gate mod to turn a bolt/nut a couple times to up the boost, havent tried that yet but do you think that can fix the problem that i have right now? I plan to get this issue fixed so I can install my 10.5 and new o2 housing. Looking to boost my car up to 22-23psi again!
Last edited by projekt_shocker; Jun 23, 2008 at 09:12 AM. Reason: deleted mod list
bump. need help to resolve this...i checked the MBC changed out the springs to stiffer one.. and called hallman to get even a stiffer spring... got that and i switched it, still no good. I havent checked the BOV or done the wastegate mod yet... been busy lately but i will try to work on it sometimes this weekend.
if you guys have any ideas to troubleshoot... lemme know.
if you guys have any ideas to troubleshoot... lemme know.
UPDATE: I have spent some time with my car fixing the problem and it narrowed it down that it was the Greddy Type-S bov.
The Diaphram on the BOV was torn all around at the edge. I have fixed that, and now it is holding at 25psi. turned down the mbc to 24psi tapers at 20psi redline.
I just wanted to note that so whoever runs into a problem like mine can look it up and decipher out that the BOV could also be a culprit to your boost issue.
The Diaphram on the BOV was torn all around at the edge. I have fixed that, and now it is holding at 25psi. turned down the mbc to 24psi tapers at 20psi redline.
I just wanted to note that so whoever runs into a problem like mine can look it up and decipher out that the BOV could also be a culprit to your boost issue.
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i am just happy that i got my stuff fixed and now i can add some more go-fast parts and get it retuned.
