The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post

gchemist · 06-07-2008, 11:11 AM

Alright!! Went through the first full tank after having the PCM reprogrammed. Normally MPG were 16-17. The first tank put out 18.5! Or about 1+ MPG more. Even with being stuck in dead stop traffic for 1 hour. At that rate, the $85 will pay for it self quickly. Not bad for a 4 door and simple modifications done to the Jimmy.

06-07-2008, 11:11 AM	#6
gchemist BAD BOW-Silverado XST Join Date: May 2000 Location: Senior Member from Austin, TX Posts: 6,431	Re: Update your PCM!! Alright!! Went through the first full tank after having the PCM reprogrammed. Normally MPG were 16-17. The first tank put out 18.5! Or about 1+ MPG more. Even with being stuck in dead stop traffic for 1 hour. At that rate, the $85 will pay for it self quickly. Not bad for a 4 door and simple modifications done to the Jimmy.