Small Block & Big Block Chevy Specific - 454 air pump
04-02-2006, 07:57 AM
What is needed to remove all the pollution controls on a 1989 454 gm motor for better gas mileage?
04-02-2006, 03:23 PM
I wasent aware that you lost gas milage becuse of all the emission equpment. If it used more gas it would make worse emissions.
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