Whats a good way to cure surging with a 112lsa 224 style cam.
Scenario: Flat or declined ground, lockup at 1000rpm (3.42 gears), car shudders when no or low throttle.
I need lockup for city driving mpg. The car shows no knock, no gear shifts (efilive 6.4.0), no nothing out of ordinary. Out of gear idle is 1000rpm (high?) and cold/warm starts are a bugger.
This behaviour is at all temps (trans/ect). I have a tci ssf 3500, ls1edit tuned (soon hptuners order placed!) and i need more gas mpg, unlocked i got 9mpg in 100% city driving.
I am not sure what idle in gear is, and im not sure if the IAC (stock TB) values are (what is nominal?).
My only guess is timing/air fuel in closed loop/low tps or idle rpm in gear is causing this shudder.
If i give it any gas to accelerate there is no problem. In third gear it is even more pronounced. I don't want to wreck the driveline with this shuddering. There are no codes being set, car drives great above 1600rpm absolutely no surging.
Please help me out, this is why i bought the software to nail driveability.
I'm posting another thread in the engine tuning section about why i need to have 1000idle rpm's with this cam.
any tips appreciated. or if its not possible then i guess i'll have to live with it or go unlocked driving around but that seems like it would punish the trans temps as it is.