Toliski Posted October 12, 2017 Report Share Posted October 12, 2017 Hello again guys. I make my Afr today but i reliaze that my idle is not stable. I sent you my pclr and a log. i try to play with close loop but nothing. I have 272 Cams but with Power fc its perfect 1000 rpm. What am i doing wrong? Quote Link to comment Share on other sites More sharing options...
Toliski Posted October 12, 2017 Author Report Share Posted October 12, 2017 Well, i think that i found my problem. My idle based only at iac ( the throttle body was sealed ) I will try tomorrow to have my TB slightly open and i post back. If you guys have any suggestions are accepted. Quote Link to comment Share on other sites More sharing options...
Hellafabrication Posted October 12, 2017 Report Share Posted October 12, 2017 You should be able to unplug the idle valve and open the throttle body to get your idle in the rough area of your required idle target. With a cable throttle you would make that just below your target and let the air bleed bring idle up. Toliski 1 Quote Link to comment Share on other sites More sharing options...
Toliski Posted October 12, 2017 Author Report Share Posted October 12, 2017 2 minutes ago, Hellafabrication said: You should be able to unplug the idle valve and open the throttle body to get your idle in the rough area of your required idle target. With a cable throttle you would make that just below your target and let the air bleed bring idle up. Ok i will try it! Thank you Quote Link to comment Share on other sites More sharing options...
Davidv Posted October 12, 2017 Report Share Posted October 12, 2017 The only thing I can see that's varying similar-ish to your RPM spikes is changes to your dwell time Maybe try change the value in the table so it's a bit more stable at idle. Toliski 1 Quote Link to comment Share on other sites More sharing options...
Adamw Posted October 13, 2017 Report Share Posted October 13, 2017 I would say it is still mostly fuel related. The 4 cells highlighted in blue below are where you are idling so you want to flatten those out a lot more. It also appears you have very large injectors with no short pulsewidth data so this will make mixture quite inconsistent around idle. If you cant get proper data for your injectors then I would suggest aiming for a richer target at idle and possibly reducing your fuel pressure a little. Toliski 1 Quote Link to comment Share on other sites More sharing options...
Toliski Posted October 14, 2017 Author Report Share Posted October 14, 2017 On 13/10/2017 at 6:00 AM, Adamw said: I would say it is still mostly fuel related. The 4 cells highlighted in blue below are where you are idling so you want to flatten those out a lot more. It also appears you have very large injectors with no short pulsewidth data so this will make mixture quite inconsistent around idle. If you cant get proper data for your injectors then I would suggest aiming for a richer target at idle and possibly reducing your fuel pressure a little. Ok thanks for advice! Quote Link to comment Share on other sites More sharing options...
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