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AVCR problem!

r33_racer

By r33_racer,
in Engines & Forced Induction

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r33_racer Grand Master

r33_racer

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Posted

Howdy

I have this boosting problem with my turbo setup on my 33. I have a high mount setup which i got from 2fast2furious...t70 with mani and a 38mm wastgate...yes i read all the shit about them from people and the cheap copies and blah blah blah...ive had no problems with it so far and its more for testing purposes in regards to a circuit car currently being built up.

The problem is when i have the avcr hooked up it doesnt control boost as i have set it. Eg...unhooked...it runs spring pressure of about 6-7 psi flat out...hooked up if i have it set to 14psi it will go as high as is possible throughout that rev range..highest so far is 1.85-1.9 bar or 26-28psi if thats what it is...its rather disturbing to see.

I have noticed on the solenoid unit that the third hole is open with no plug or screw in it to block it off. Does anyone know if this should be blocked?

My lines are setup with a t piece from piping after turbo one to bottom w/g and other to s/noid and one from s/noid (com) to top of w/g. Im fairly confident its correct. I currently drive around with the line from top of w/g unhooked from s/noid so it runs on spring pressure.

It's got me rattled for the last week. Any help would be appreciated greatly as i need to fix this before i can get it tuned.

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https://www.sau.com.au/forums/topic/81188-avcr-problem/
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