Did you have torque management removed? Also, is the fuel tank full or at least 3/4 full? A good electronic fuel gauge will help to see if you're running out of fuel at high RPMs, too. What's cool is you can hook it into the enhanced version of HPT to track your fuel pressure as you drive.
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
thanks red yeah thats one reason i bought tuners, plus the trouble of having retunes and such, but anyway it threw a code P0121 later last night.. i had a pretty much full tank of gas, but i also noticed this morning i cranked the truck and it died backing out of drive way after 2 ft or less, then it took alittle peddle and a few turns of the ignition for it to crank again... figuring i might have leak down in the tank from the hose from the pump, its a walbro done had to correct it once before ..Originally Posted by RedHeartbeat
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