Harris Performance TBI chip... - The 1947 - Present Chevrolet & GMC Truck Message Board Network

H8PVMNT · 09-06-2011, 03:04 PM

Just installed the Harris Performance Inc Towmaster chip in my '88 1 ton crew cab and took a 500 mile tow/road trip to pick up a milk cow (banjos playing in background).

These things really work! Throttle response and acceleration was much improved as well as a noticable difference in power wile pulling hills. Milage was the same as before at around 10 mpg. I haven't got to drive with it much unloaded since putting in the chip. I was getting 10 mpg loaded, unloaded towing etc. so I'm guessing this will be the same.

It also idles much smoother than before.

It's nice to have a 5 minute install make a noticable difference.

09-06-2011, 03:04 PM	#1
H8PVMNT Registered User Join Date: Aug 2011 Location: Highwood, MT Posts: 24	Harris Performance TBI chip... Just installed the Harris Performance Inc Towmaster chip in my '88 1 ton crew cab and took a 500 mile tow/road trip to pick up a milk cow (banjos playing in background). These things really work! Throttle response and acceleration was much improved as well as a noticable difference in power wile pulling hills. Milage was the same as before at around 10 mpg. I haven't got to drive with it much unloaded since putting in the chip. I was getting 10 mpg loaded, unloaded towing etc. so I'm guessing this will be the same. It also idles much smoother than before. It's nice to have a 5 minute install make a noticable difference.



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