GM solenoid question

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Oct 6, 2009 | 12:32 PM

cnj4ever

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From: Columbus, GA

GM solenoid question

If you swap the solenoids out STOCK vs GM boost solenoid, do you have to retune for that or is it a straight drop in affair. Thanks for the help sorry if this has already been answered somewhere else.

Oct 6, 2009 | 12:33 PM

617G

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From: Boston

yes, it has to be retuned! The are no longer any restrictor pills and you will overboost untuned.

Oct 6, 2009 | 01:42 PM

goofygrin

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From: Frisco, TX

more than just the overboost, you only use one table to control the boost and the changes are finer.

Oct 6, 2009 | 11:44 PM

tephra

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yes retune DEFINITLEY required.. otherwise you WILL blow your engine!

Oct 7, 2009 | 01:53 PM

KevinD

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From: DFW, TX

RETUNE!!! you have to reduce the duty cycle on the boost control solenoid tables. default it is 100, start at 50 with a 3 port.

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