Hemi2Slo

When I transition from park or neutral to drive my car revs to about 1500 rpms and it causes it to lunge into gear and jolt the entire car. Then when I go from drive to park it revs to nearly 2000 rpms. It does it to a certain extent going from park to reverse, but its not as bad. I'm using HP Tuners and I have adjusted everything I know to adjust and it is still doing it. There has got to be something I'm missing. Has anybody had this problem and/or know how to fix it? Thanks in advance.

Old Geezer

iTrader: (3)

What modifications have you done?
Cam?

Hemi2Slo

Yeah, a hot cam and bolt ons. 85mm throttle body and LS6 in take. Car is a 98. Transmission has been built and has a shift kit and 3000 stall.

IDRIVEAG8GT

Check the Airflow step up patterns and if there's any on the park to drive transition, zero it out. Might wanna reduce your final drive airflow tables by 2 tenths or so too. If that doesn't help then go to your idle table and make the warm idle for P/N, the same as Drive.

Hemi2Slo

Those must be parameters from efi live or somethin. I've never seen those in my HP tuners. If it is HP tuners stuff, where do I find those?

IDRIVEAG8GT

Yeah it's HPT. I need your file to browse but it should be under engine>airflow>subtab idle. Then you should be able to find your airflow tables.

Gabbiani

iTrader: (20)

Engine, Idle, Airflow, Idle Airflow - Bet the in drive numbers are a little high here.

IDRIVEAG8GT

Thanks Gabbiani. I couldn't remember the tables for the life of me.

Hemi2Slo

Ok cool. Thanks guys. I'll try it as soon as I get to my laptop.