Bad Boost Creep
#1
Bad Boost Creep
Setup: gsr with wiseco 8.6:1 compression
Precision 5431
Go-auto 3 inch sp
-go autoworks mini ram manifold
Turbosmart 38mm wastegate
Turbosmart mbc
I am getting crazy boost creep. Tends to creep the most in the higher rpms. I have checked and fixed boost leakes. And tried running off the wastegate spring. I will hit about 14 psi and it keeps creeping until I hit boost cut at 18 psi.
Precision 5431
Go-auto 3 inch sp
-go autoworks mini ram manifold
Turbosmart 38mm wastegate
Turbosmart mbc
I am getting crazy boost creep. Tends to creep the most in the higher rpms. I have checked and fixed boost leakes. And tried running off the wastegate spring. I will hit about 14 psi and it keeps creeping until I hit boost cut at 18 psi.
#2
Moderator
iTrader: (14)
Re: Bad Boost Creep
Could possibly be 1) engine management timing (too much retarded timing in higher rpms = heat= boost creep), or
2) boost reference point for the boost controller is too high (should be at side of wastegate to intake manifold and not compressor outlet), or
3) could be the way the turbosmart is set up. (As much as I like Turbosmart, Hallman makes a better product)
Hard to say
Time to get to work to diagnose. Try a few things out, there.
2) boost reference point for the boost controller is too high (should be at side of wastegate to intake manifold and not compressor outlet), or
3) could be the way the turbosmart is set up. (As much as I like Turbosmart, Hallman makes a better product)
Hard to say
Time to get to work to diagnose. Try a few things out, there.
#3
Re: Bad Boost Creep
I just put a new 44mm wastegate on, that didn't help. I've also tried without any boost controller and it still creeps. Only thing I haven't tried is changing the reference point to the intake manifold instead of turbo.
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#14
Honda-Tech Member
Re: Bad Boost Creep
Is there a flex section on your dumptube? If so see if it collapsed. If your dumptube dumps into the downpipe be certain the hole in the downpipe is as big as the dumptube.
#15
Honda-Tech Member
Re: Bad Boost Creep
have you tried totally taking the WG off and seeing? If its still boost creeping with no WG there is some packaging issues or something else is very wrong with the design of the manifold or setup.
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