Changing Chips

[donZ]

I Want to go to the track, and test a few chips, i have.

Can i make a pass, and then change the chip, and make another pass ? Or does the computer, need time to relearn, the new chip ??????????????

 

[Raven]

Good question - I don't think there's a 'learning period' involved with the ECM but I could be wrong. Just follow the typical procedure for the chip change (especially unplugging the orange wire in the engine compartment) and you should be good to go.

 

[Scott231]

Actually the infamous "learning curve" of a chip has more to do with part throttle driving and idling than it does with WFOT operation as the latter is all Open Loop anyway. However, as a part of the Open Loop operation, the BLM for the upper-most cell is referenced and needs to be closer to its proper value than you will get from just throwing in the chip and going WOT...although the burnout process is a good thing for learning at WOT.

 

[donZ]

would this be a fair test ??

 

[bruce]

Unless you block the BL correction at WOT, the results will be slightly skewed.

Clearing the ecm right before the run will give you all the BL cells a 128. ie disconnecting the orange wire. I run a switch on the orange wire, for being able to clear the ecm, and it's also an Anti-theft devise.