Need help with c5 idle tuning!!
02-05-2006, 01:37 AM
#1
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Problems with c5 idle tuning!! I recently installed an f13 cam in my 02 z06 and I just about have everything dialed in except my idle. I have logged the stit, ltit and I have made a histogram with these things and copied and pasted into my running airflow tables and still no luck. Almost everytime the engine is coming back down to idle it dips lower than the desired idle rpm and surges up and down for a few seconds. I have an ls2 throttle body and a fast 90 intake manifold. I have my idle desired airflow and the dynamic airflow numbers almost matching. Anyones help at this point would be great!!! I would be happy to send my logs for anyone to see maybe what I may be missing. Thanks in advance!
Last edited by hc_performance; 02-05-2006 at 03:10 PM.
02-07-2006, 08:34 PM
#5
Having your dynamic airflow and iac idle desired airflow the same is not important, it's just convenient. What you want is ltit and stit at 0. If that is already the case you may want to mess with your idle adaptive spark control or the proportional/derivative idle airflow tables. Oh yeah, that is assuming your ve is already good.
