Idle question for 2016 c7 lt1

[wtf777]

hi guys here is a log of my idle. i set it to 600rpm. here is tune as well. is this normal for timing to spike like that goes from 14ish to some time 26.
the first part is with ac on then i rev it ac off. let it idle a bit. then rev and ac back on. here is the log and tune.

2016 c7 LT1 7speed manual
afe intake momentum pro 5r
full exhuast headers no cats. dbbl helix x pipe straight pipe.
ngk LTrIX spark plugs
taylor wire set
ATI super damper
on e85
stock cam

thanks for any help or comments.

[wtf777]

hi guys here is a log of my idle. i set it to 600rpm. here is tune as well. is this normal for timing to spike like that goes from 14ish to some time 26.
the first part is with ac on then i rev it ac off. let it idle a bit. then rev and ac back on. here is the log and tune.

2016 c7 LT1 7speed manual
afe intake momentum pro 5r
full exhuast headers no cats. dbbl helix x pipe straight pipe.
ngk LTrIX spark plugs
taylor wire set
ATI super damper
on e85
stock cam

thanks for any help or comments.

looks like after not too many trial and error i was able to smooth idle out i will upload logs when i get chance.

[wtf777]

ok now im convinced that the c7 lt1 idles wierd. i always felt like it idle wierd before i got hp tuners. now that i can data log i see that is caused from the random timing advance jump as you can see here on the log. it seems to get more frequent when the ac is on. the begging of the log is with ac off then about 45 sec in after a light throttle tap i turn on ac. the car drive fine btw.

[GHuggins]

Your not going to see any changes, but this should change your idle where it's most likely intermittently struggling to idle due to leaning out.

[wtf777]

Your not going to see any changes, but this should change your idle where it's most likely intermittently struggling to idle due to leaning out.

THank you! i loaded up the tune and let it run few minutes (im busy at moment) but i can already tell its much smoother. ill drive tomorrow. Thanks again

[GHuggins]

Yeah, people don't realize how important these background tables are You should have some more zip now too

[wtf777]

Yeah, people don't realize how important these background tables are You should have some more zip now too

hi guys back here again. car runs fine. after a long drive and its fully hot idle gets weird with ac on. i have log here. ac first then rev twice and then turn ac off.
i did write entire for last tune never even notice that before.

[GHuggins]

You say it's a little weird? As in???? Looks like you changed external load and some other things that might just need tweaking some more. Probably put peak torque back to stock.

[wtf777]

You say it's a little weird? As in???? Looks like you changed external load and some other things that might just need tweaking some more. Probably put peak torque back to stock.

it sounds like a pop but it dont always happen. maybe its me.... but i put those tables back to stock and adjust the alchol multipliers 1 or 2 % cant remember. and started it up in my garage for few minutes. dosnt get to the temp i said just in garage but it did sound better so far in few minutes. hopefully i get time tommorow and driver her.. now that it was in garage i may have an exhuast leak i can hear it off wall.

[wtf777]

with all the changes ive made i cant remember if i copied the stoich correctly for flex fuel. is this correct?

[wtf777]

not sure why but with ac on u can see the jump in spark.. why???? 1st minute is with ac on the rest after rev is ac off(much smoother)

[wtf777]

could it be the scoarching heat in florida?

[GHuggins]

You can try raising your external load or even your reserve a touch and I do mean a touch to give it some headroom. Even putting a little relief into the left side of the predictive and adding to the right side can help with that sometimes. Otherwise are you actually feeling that? Is it shaking or anything like that? Engine load will be the only thing changing fwiw.

[wtf777]

You can try raising your external load or even your reserve a touch and I do mean a touch to give it some headroom. Even putting a little relief into the left side of the predictive and adding to the right side can help with that sometimes. Otherwise are you actually feeling that? Is it shaking or anything like that? Engine load will be the only thing changing fwiw.

should the values go up or down on the external load? it feels like a misfire when it spark spikes but no codes of anything and drives fine even did quick wot pull yesterday didnt break up at all.

[STAGEUP]

could it be the scoarching heat in florida?

You think Florida is hot? lol! Come to Phoenix! Ha ha ha ha

[wtf777]

You think Florida is hot? lol! Come to Phoenix! Ha ha ha ha

oh i know its hot there its just the humidity here its rediculous. itll be 95 and feel like 108