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Boost Creep

Ultimategtr

By Ultimategtr,
in Engines & Forced Induction

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Ultimategtr Proficient

Ultimategtr

Posted
Posted

Hey all.

since i put my splitfires, the boost creeps up to like 15psi(i back off staight away) in every gear.... so to try and remedy it, yesterday i took off the solenoid, blocked the pipe, and connected the w/g actuator to a positive pressure souce(at the J pipe)..

took it for a spin, was a bit better but come 4.5k + and it went up to 15psi or just under...

Now my bets on the dump pipe... why.. cos i think the flapper isnt able to open fully at WOT. which also explains why i didnt get boost creep before, as it was misfiring and not enough gases to flow through.

So now im looking for a dump pipe... what do you guys use? a good one..?

or any input as to why i could be getting boost creep?

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  • 2 weeks later...
Simmo1985 Community Regular

Simmo1985

Posted
Posted

I'm in a similar position to you. I've just installed a turbotech boost controller and I'm hitting the same level of boost as you even on the lowest possible setting. Starting to suspect it might be my new split dump pipe (JJR type) but I'm really only guessing at this stage. Hope it's not that, I thought most people used these without a problem.

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https://www.sau.com.au/forums/topic/183360-boost-creep/#findComment-3351657
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FighterJoe Explorer

FighterJoe

Posted
Posted (edited)

I am having the opposite problem with my stock turbo (R33 S1), I set my boost controller to hold roughly 12psi but the boost drops off to 10 psi (4.5k+). Even if I have it set to 14psi initially it will still fall off to 10psi. :)

Edited by FighterJoe
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https://www.sau.com.au/forums/topic/183360-boost-creep/#findComment-3351786
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tek_01 Proficient

tek_01

Posted
Posted

to the 2nd poster, make sure you have it connected the right way and also your setup with the charcoal canister is correct... i had the exact same problem as you as soon as i installed my intercooler it would stay at about 15psi even at the lowest possible setting... it turned out that it wasnt connected properly, so when we bypassed the canister to check if it was the setup that was wrong, it worked

just a thought

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