Guys,
Here is the deal. 99 vette, SD only, Stft only, Supercharger and basic bolt on auto tranny. Fuel time look good +-5. The only issue is a slight rpm bounce up and down maybe 25 rpm at idle in gear. I just want to get the idle to be smoother and not bounce...I will attach my scan and if you fast forward somewhere in the middle after driving and mph zero you can see the bounce. Much easier to see with guages showing....thoughts on what to adjust next???
Sorry could not attach I am on my phone but I have another post submitted a few hours ago that has the scan file....sorry but will add if here too soon
Play with the timing. See what works best. It may be smoother at 18 degrees or 20 degrees. See how much your over/underspeed spark corrections tables are allowed to move.
25rpm is nothing really, a decent camshaft can do more than that pretty easy.
2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.
If you don't post your tune and logs when you have questions you aren't helping yourself.
Will try...I hope it's that easy
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