Idle Tuning Tips for Hp Tuners

The method i show can be modified even further to make it sound more radical.
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[@carguytim9913]

The timing you added to prevent it from stalling is wrong, that octane table is for open throttle only. You have a drive and in park table for closed throttle. And you do NOT want your advance base tables to match your octane tables. Like I said octane is for open throttle, advance tables are for closed throttle TUNING. Know what you are talking about before offering advice to others about tuning. You are right about the underspeed and over speed but you also have to be careful with those tables when coming to a stop you could get surging or stalling.

[@kyle8380]

Very smart thanks for sharing!

[@peterfinnerty6384]

A lot of good info here that most u tubers skip . i am curious as to how big that cam is tho . Im runng a lq9 with a 230 dur cam . it will get dialed in thanks to you . Thank you !

[@tylerwalker2206]

Thank you

[@ram_1776]

Good info

[@FerasDishli]

Nice info thanks. شكراً جداً

[@redvette2466]

I've got my car's idle down pretty well but the cam seems to stop chopping whenever I turn the AC on do you know what the problem could be it's an automatic C5 Corvette?

[@michaelbaskinmichael9862]

Have a surge when in gear and can’t drive it like that any help would be great

[@35057]

Great approach to this. I’ve been battling idle issues on my h/c build. Just issues getting it to recover from a rev at idle when it comes back down it wants to die. I messed w the follower and cracker and it didn’t help. Scan is showing nothing is adjusting idle timing. It’s odd. Base airflow timing tables didn’t match base high octane timing

[@michaelbaskinmichael9862]

Did that fix it

[@35057]

@@michaelbaskinmichael9862 it did yes. Best advice I found w this yet. I got this tune from the repository to get me in the ballpark. I’m not good enough to get a h/c swap running and idling from scratch. So it had a bunch of changes that I essentially put all back to stock. But matching your idle spark tables to the idle region in your base spark map seems like such common sense I don’t know how it didn’t dawn on me but it worked. Mine was really temperamental when it was cold also. But it runs great now. I just need to out the VE back to where it was. “Smooth it out!” No… lol. Ran worse. I’ll give it what it wants.

[@carguytim9913]

Stalling would indicate either base running airflow or timing advice in gear or park. Look at your stit (short term idle trim) in your scanner. Whatever your stit trim is needs to be added or subtracted from the base running airflow table. Your base running airflow table should match your desired airflow. Both stit and desired airflow should be logged in channels for idle tuning. If your stit is dialed in, around -.2 to + .2 g/s then you can move on to spark. If the problem is in gear then add timing to the IN GEAR table under timing advance. The advance tables are for closed throttle so do not add to the octane table. Octane table is for accelerating only.

[@michaelbaskinmichael9862]

Airflow on dynamic defco nitial airflow and delay air flow per cam revs I think this is where my problem is

[@chrisbryant1657]

Are you matching idle spark advance in park or in Drive to the high octane table?

[@RAWRMotorsports]

Bro u sound just like hank hill

[@michaelbaskinmichael9862]

Have a high idle for a couple minutes then settles down what in the world it’s not cold

[@ktcarroll4723]

Have you dealt with high start up rev after truck is warmed turned off and after restarted it revs to 2000-3000 run m for 3-4 seconds 84 c10 5.3 598/601 cam headers CAI idle is awful also but driving is awesome power if I lock timing at 15 with special functions I can maintain a stable idle and not stall. I’ve did all the smoke text no vacuum leaks etc I’m trying this advice on video and go from there

[@Microbombs]

Sounds like you're base running airflow is way too high. Or your startup airflow is way too high.

[@ktcarroll4723]

Microbombs I’ll give that a try thank you

[@michaelbaskinmichael9862]

Might have some kind of air leak , mine was intake need torque down

[@michaelbaskinmichael9862]

And I did find another tune and put that in and it was gone

[@ktcarroll4723]

@@michaelbaskinmichael9862 I figured it out. I had to lower the start up air flow through HP Tuner and I’m good to go. I searched for vacuum leaks for a week with smoke machine and nothing showed up. Tried timing throttle cracker etc etc etc and read your comment about start up air and that was it Big cams are a nightmare to tune for us shade tree DIY’ers