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The mkiv Supra Owners Club

Stock Wastegate "crack" pressure


Flip

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Setting up my AEM boost controller on stock TT's, but I'm not sure what value I put agains the wastegate crack pressure. At the moment I have 0.9bar, but I think that's too high?

 

Can anyone help pls?

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OK, tried it at 0.7bar and all seemed well, just playing with the duty cyle now.

 

Strangely if I turn the boost controller off I get about 0.8bar on the first turbo and only about 0.5 - 0.6 bar on the second turbo (no matter what the wastegate pressure is set to). Before I fitted the boost controller solenoid I was getting 0.8bar on the first and between 1.05 and 1.15 on the second.

 

Duty cycle is getting me back there though, peak of 1.07bar at 25% duty - it feels quicker than before too - perhaps its a more stable 1.07bar. I don't know how stable the boost level was before - tend to pay more attention to the road and less on the dials!

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