Thread: Boost by gear/ boost controller setup questions.

I'm getting about 3psi of creep by the rev limit. If I run the vacuum direct to the gate the boost is stable so it's not mechanical creep. The creep only occurs in 3-4th gear I assume due to load. 10-11psi is what I'm aiming for but it continues to creep even if I lower the boost duty %. I also notice that the controller causes more lag then just running off the gate.

I should add that it's a progressive creep, as rpms increase so does the boost. I could understand a static increase due to the controller now in the vacuum circuit but not an rpm dependent creep.

Thanks

If there are any boost pressure leaks or restrictions in the hoses or fittings used with the EBC solenoid, this could cause creep. For some reason, boost pressure isn't getting to the WG when the EBC solenoid is connected.

The system pressure checks out at 20psi with no leaks. I'll try new fittings and vacuum line for the controller. Thanks.

Well I went over the entire system and found no leaks. I took the boost controller apart and it's fine, but then I figured I'd see how well the sintered brass filter on the bleeder port flowed.....not well. Yeah that was the route of all boost creep issues, word to the wise remove the sinter filter if you start having boost creep. Thanks guys for th input it made me double check every little thing and led me to the issue.