Help with bucking at low speed/rpm

[acdc-angus]

Hi,

I asking you for help because I don't know if my issue is normal and I just have to learn to deal with it or if there something I can do.

I have a 2000 Z28 Camaro with ARH 1-3/4 LT, Fast 92 intake, NW 92mm, stock heads, 3.50 9inch, T56 Magnum-F (2.66 1st) and Tick Peformance SNS Stage 2 Camshaft (227/235 | .618"/.605" | LSA110+3)

VE is +/- 2%, MAF is +/- 1% error. I run Flexfuel to 60-70% Ethanol on P59. The tune is still on Automatic trans to keep the cruise control. Idle RPM set at 900.

I have a loooooooooot of bucking when I rolling my car in 2nd where idle RPM. I don't know if it's normal or not.

The issue is less when my Idle spark is set to 18 (matching on high/low octane tables) w/o crackers, more when I set it to 20. With Crackers/Followeer AF set, it's the WORST. No Follower/Cracker, is not really better.
So the better drivable low rpm in 2nd is the 18? w/o crackers, so if you know how to get rid of it or something I can try...

Here is the logs in SD and the 18? w/o Crackers tune : *url deleted*

Thanks for the help,
Guillaume

[acdc-angus]

Thanks for the help, I found out