Base Timing

[Rawze]

(09-16-2016 )ahm700 Wrote:  Ok thanks that's why i asked. I am still learning myself. To bad that 90% of things you read or see is just crap. I know some of the cummins were set at 6 6 so thought there might be something to it.

YES, many of the CM870's are set 6-6 and some are 6-7 and even 4-4 and 6-4. They were still trying to get emissions standards right with that engine, and it changed based on serial number sequence. BUT they also had programs set for those offsets for that serial number range to go with it. -- Another reason you can't just take an ISX program and put it into another engine blindly.

I have nothing against someone trying to get a bit more efficiency out of their engine, experimenting, etc. but the most difficult way is to go down the road towards "fooling the ECM". it will fight everything you do tooth and nail,.. The easiest way is to actually simply tell it you want something different instead. It takes all the guess work and instability out of the equation.