Originally Posted by minytrker It was most likely tuned with a 2 bar HPT OS. It will have to be flashed back to stock with HPT and then you can tune it with EFI but you'll have to start over. Thanks for the heads up!!!
99 ECSB 1500 6.0 lq9/243 2wd 3.42 in the works. Efans - CAI - Walbro 255lph - Eaton LSD BTR STAGE 3 truck cam - 60lb Inj - MP122HH FLT Level 5 - 3000 SC YANK Pacesetter LT's - ORY 13.170 @ 103.33 Mph -
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