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My 1JZ is running high boost, HELP!!

Posted: Fri Jul 20, 2012 11:26 pm
by arctiic.23
Hey,

My 1JZ is running high boost and i dont know why, it doesnt have a boost tap or anything but it does have a mines ecu. Anyway its running about 20psi - 25psi on the standard twin turbo setup which doesnt seem right.

Any ideas were to locate the problem if there is a problem or is this normal for 1JZ to run which surely it cant be.

Thanks

Re: My 1JZ is running high boost, HELP!!

Posted: Sat Jul 21, 2012 11:34 am
by archon
How reliable is your boost gauge?

1JZ boost control is all mechanical, so if it really is running that much boost it'll be either:
Split/cracked or missing wastegate line
Broken wastegate actuator
Seized wastegate