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Makes perfect sense. Guess it'll be a 411 swap then. Thanks!

Here is the file off my daily driver 04 suburban. 5.3 flex fuel, 862's with .040 off. BTR stage 2 truck cam with 550 springs. Built 60e. VE and MAF are dialed tits. Running it kinda rich on the top...

5 connectors



Yes I have tuned dozens of (gen3/4) cars and trucks on this computer/mpvi2

First attempt at tuning a a CK pickup (1998 C1500 SWB). 1GCEC14W7WZ273653 build date 08/98. Has a white/black PCM, or "black box" from what I've read. Appears to be perfectly compatible with HPT, but...