EFIDynoTuning Forum

Am I correct in assuming that the way to dial FN1861 in (after t-body adjustment is corrected which is done) is to log a start-up, view the log while monitoring (ATMR3, DESMAF and ECT), deduce what cell we are in in FN1861 at a time/place in log and add/subtract DESMAF correction value from said cell? I’m just trying to clarify this process for my conceptual understanding so I can quit chasing my tail and make some actual progress. Thanks

yep that's it

atmr is at the top right of the dash

simple add or subtract the cell in use to try to get the idle air error to 0

Neat! So, I need to repeat this in Drive, correct? Also, it seems implied that the start up IAC duty cycle would likely need to be dialed back since our t-body has been adjusted to be open more at all times. I lowered start up crank duty cycle a bit and crank pw similarly and start ups tend to be less dramatic now too. Should I move on to dash pot and the A/C adder after finishing up with the ISC D and N multipliers?

yep

btw I posted my tune from my marauder along with updated adx and xdf files

Thanks for sharing that and those updates. I really feel like I'm raping the ISC multipliers because the tables are beginning to look a little ugly lol. Is that ok as long as the DESMAF gets close to 0?

yep