Christian66LEO

My car, 2000 c5 FRC, A4, 500+ rwhp, stroked with an A@A SC, just had a new transmission installed with a 2500 stall.

The stall is probably to small for most but my last 3200 stall i thought was bad as i had the same problems with it.

Starting from 15 mph or so i can roast my tires (Nitto Extreme 305/35zr18's) untill 3rd gear no problem. I have zero problems with the car after it gets going a bit besides traction.

The service act. handling, service trac. control is on always.

I bog down at take off's. I cant even power break above 1500 rpm (it bogs down) for a launch and that was with both stalls.

I removed the EBCM plug as I have read it helped others before but it didnt seem to help me.

Any help would be appreciated.

trainor

Have you tried turning off the active handling. Mine bogs and a start if its on. Good Luck

Christian66LEO

Yes it's off

Grimlock

Maybe the tune is way too rich at idle?

Christian66LEO

I'm hoping it's something that simple as I didn't have it re tuned after the new transmission install.

I talked with the installer and he seems to think possibly a vacum problem?

Hauln1203

Sounds like your traction control may be malfunctioning, it may not be shutting off. I would also use a bigger converter.

Christian66LEO

I pulled the EBCM so I would assume the traction control is off plus after it get's going im spinning at will.

Grimlock, I just got off the phone with my Guy and he said it was possible and was going to talk with his tuner.

dankhts

mine behaved the same way after a bunch of mods and tunes the active handling wouldn't shut off, couldn't even do a burn out at the drag strip.....it would only turn off when in competition mode....couple changes with the HP Tuners re my trans programming and all was god again.....

MikeV

Here is a test.
Turn the TC off.
Put the trans in 3rd. Hold the brake and push down on the gas. If it wont spin the tires in place go to next text.
Put TC in Comp mode and try holding the brake and pushing down on the gas again. I bet it will spin!

I had same tuning problem.

Mike V

Christian66LEO

Well I seem to have fixed it so far. I removed and cleaned the Chassis Ground connector G-101 found in another article (http://forums.corvetteforum.com/c5-t...tion-long.html) and so far it's working. Thanks for the help

ZMX

Good deal. It's a pain for diagnosing when bad grounds make things behave strangely rather than not at all.

Bop Bop

Thx, for the post. You solved some problems for me and saved me alot of money. Cheers.

pharestutt

i have the same problem can anyone help