askulte

So... Tried to do some tuning last night, and richened up the MAP acceleration enrichment. The DFI 6 has two different kinds - MAP rate and TPS rate. I'm having a hard time trying to figure out how to get this all going right. Before, I'd have a major lean pop on WOT shifts (when I lift to shift, and get right on it hard again), so I richened up the MAP AE. It's basically a 2D graph, where the vertical axis is % Fuel Enrichment, and the horizontal axis is MAP rate. The TPS AE is similar, but instead of % enrichment, it's a millisecond enrichment.

What do you all have with the 730 ECM's? Any pointers on getting it set up? How long does the AE last? What kind of value should be a good ballpark?

askulte

Replying to myself, in case someone else ever has this problem. The MAP AE wasn't quite enough (had it up to 30% addition), so I added pulsewidth to the TPS AE (bumped it from 3.8ms to 7ms), which cured the lean pop. The wide band shows a rich spike down to 11:1, then steadies at 12.3 (where I like it for now) when the throttle is stabbed. Slower throttle increase still has a little lean blip before steadying out, so I need to add a bit more duration at the lower accel rates. Drivability is much better now.

Andris