Cammed LS1 idle hunts at stoplight

[statesman]

I did tell you that it was a steep learning curve.

[joecar]

Post some screenshots.


That spark table has too much advance, that's easy to increase advance to make a little more torque, but at the expense of knocking.

[detroitmuscle07]

I've seemed to have figured it out. The fuel trims also seem to be in a more reasonable position. I'm not currently seeing any KR, but I will take the advice and work on correcting spark next. Please take a look at my most current log and see what you think.

calc 4.efi

Please see my most recent tune file as well. hot start 100% b4343 increase_calcvet_tuning tips_settings.ctz

[statesman]

I've seemed to have figured it out.

Setting things up can be a bit hard when you first start out... but you've got it happening now.

Fueling looks a lot better now. If you're happy with the fueling, then move onto idle tuning. There's a lot to learn with idle tuning, so take your time and do the reading and learning before you attempt to deal with your idle surge.

I will give some handy hints...

Make sure your desired airflow and actual airflow match... if you've got drive by cable, then correct the IAC effective area table by shifting the entire table to make the airflows match.
Don't assume all surging is airflow related... sometimes spark can be contributing to it.
Log all the airflow pids... it will give you better insight into what's actually happening when you get a surge.

Joecar is right, you appear to have too much spark advance... but I have personally seen engines which have carried more spark than you would normally expect, so just make sure you always log for KR and don't worry too much about it if you're not getting any knock.

[detroitmuscle07]

Thanks again gentlemen. I'm pretty satisfied with the current fueling. May do a few more logs and see if I can clean it up some more. I'm looking into the idle tutorial material now.