Idle troubles
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So this past weekend I upgraded to sequential injection on my NA6.
Before this I had very few issues with my idle other than it liked it a little rich. Switched to sequential and suddenly /everything/ was absurdly rich. Changing my VE table was no problem but I can't seem to get my idle correct or repeatable now. Basically my issues are as follows: Idles lean on hot start and very slowly richens back out. MAT/heatsoak ruled out because MAT correction set to 100% Oscillation. It oscillates about 50-70 rpm but it's audible and I can see the idle PWM and advance correcting it. Cold starts are slightly rich and also have the same oscillation but are more stable. What I've tried, all to no avail: changing idle timing. Was at 20 degrees with batch fire, tried everything between 10 and 20 degrees at the suggestion of some old threads quoting 10-15 is proper. Changing idle VE (obviously) to target 14.3 when hot. Increasing WUE to timed as opposed to rotations Ignore MAT corrections on -> off Turned idle tuning mode from advanced to basic (no change, dont even remember having advanced on) Idle advance timing correction from engine state to PID Note: My wideband is currently wired to a switched 12v and goes through heat cycle when the key goes to "on" and after cranking, but my woes persist through that time. I'm not really looking to have my hand held here, but I've tried too many things to not ask for a push in the right direction. |
Looking at your tune I see a few things that might help.
Hope some of my input is helpful for you. |
How rich are you on cold starts? Should be 12.5-13.0.
Hot restart issues come from untuned ASE taper and percentages. |
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