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Hi everyone,
I have an 03 tahoe flex fuel. I tuned the MAF, the VE table, leaned PE table a bit, removed some torque management settings. Truck noticeably lightened up especially at WOT.

However...

Thanks a lot

Hi I'm new to tuning, I own a 2003 tahoe 5.3 and I have two questions. First, can I tune with the stock PCM on my truck. Second, does HP tuner Pro come with a few credits when you buy it ?