Do I need new tunes?
currently I am tuned for the oem down pipe, gutted cat and muffler delete straight oem exhaust.
I have now added a 3" down pipe 5" straight pipe to 7" stack.
Am I in need of new calibrations?
By the way truck definately runs better with the opened up exhaust.
__________________
Jeff
Semper Fi!!!!!!!!!!!
'97 F350 CCLB SRW 4X4 ZF5
DIY 6637 intake
FPR shim
3" down pipe 5" straight pipe 7" stack
PHP 6 pos chip
pillar pod 3 gauge (fuel pressure, EGT, Boost)
08 Console
Nitto Terra grappler 295/75/16
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