Boost creep- Only when hot?
#1
Boost creep- Only when hot?
I recently installed a new turbo kit with a Garrett T2560 on my '96. I've been working out all the kinks and the one that has me baffled is boost creep. The external wastegate spring is set at 9.5 PSI. and it holds very nicely about half the time (in all gears.) The other half of the time I can see the boost creeping up to 11+ PSI and from what I can tell this only happen when it is hot out. Would a boost controller be a good idea to solve this issue?
#3
your problem is the WG is not venting enough to keep the psi stable where you want it. A MBC will allow you to stabilize this at a higher rate, but ultimatley you will need to look at the issue of flow where is the EWG placed on the manifold and how much flow can it support ie is it pretty, smallish before it rejoins the DP, where are you sourcing the boost signal? and what springs have you tried in there?
#4
I have a BEGI series 3 system and the boost signal is coming from the compressor housing. I haven't tried different springs.
The main thing that I don't get is why it holds great half the time and not the other half. If it were an issue with the wastegate not flowing enough wouldn't I have the problem all the time? Would a leak between the compressor housing signal and the wastegate also cause this issue?
The main thing that I don't get is why it holds great half the time and not the other half. If it were an issue with the wastegate not flowing enough wouldn't I have the problem all the time? Would a leak between the compressor housing signal and the wastegate also cause this issue?
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