2003-04 Mach 1 Registry Owners Club - View Single Post - how do I use my sct to find out why service engine is on

Mach1Junkie · 06-20-2015, 10:51 AM

How do I use the sct xcal3 to see why service engine soon is on? I have a custom tune that the guy did who dyno'd the car and I've been afraid to plug the sct in cause I don't wanna mess with the tune.

06-20-2015, 10:51 AM	#1
Mach1Junkie Registered User Join Date: Sep 2012 Location: lords valley, pa Posts: 211	how do I use my sct to find out why service engine is on How do I use the sct xcal3 to see why service engine soon is on? I have a custom tune that the guy did who dyno'd the car and I've been afraid to plug the sct in cause I don't wanna mess with the tune.