: MADTUNER Mileage...2005-2006 PCM V8

01-25-13, 05:43 AM
Those members that got the tuned ECM from Madtuner !
Does it affect gas mileage ? HOW ?
Appreciate your comments. :cool2::cool::cool2:

01-26-13, 07:42 AM
1st out cars do not have a PCM, we have it split between an ECM and TCM. The ECM tune has nothing to do with it. The TCM tune which keeps the car engaged in 5th gear longer helped with fuel economy.