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Old 06-04-2004, 07:06 PM
HGW HGW is offline
Hummer Expert
 
Join Date: Jan 2004
Location: Runnin with NASCAR, sometimes Central NJ
Posts: 932
HGW is off the scale
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Unless it is pinging, you do not need superunleaded---you may try a tank to see if the "feeling goes away".

The Diablo Predator is a great tool----I use one on mine, which is supercharged.

However, a Diablo does well on a stock engine too---it also allows for real time monitoring of your engine parameters. It can adjust many parameters to make your truck run great, including torque management.

They are pricey but worth it--you can also download custom tunes to your laptop via the web and upload them to you PCM.

Without boring everyone, send me a PM with your number and I can give you a lot of info before purchase.

Also, it takes a number of drive cycles until your PCM adjusts to your new add ons-----this may cure your issue---the predator is still a good investment though.
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