34koop

I have a stock ls1 with whipple supercharger only making 400 rwhp (dyno dynamics) but loads of low end torque. Even with the problems described below the car still ran 12.38 @ 114mph

The box has a B&M shiftkit and the line pressure has been upped but I have no idea what to.

The car has very firm shifts and bangs into gear from neutral.

The car shifts at the programmed rpm/speed at part throttle.

When drag raced (WOT) the box shifts at 3000 rpm first to second and second to third. The shifts are not the same harsh shift it makes at part throttle. This happens whether the box is left in D or manually shifted.

I have turned off all the abuse management and torque management I can find.

Are there any hydraulic/mechanical reasons for this to happen such as fluid leaking past something under pressure and forcing the shift?

What are the usual symptoms of the box going into limp mode ?

Any other advice or help appreciated.

cheers
Mal

FLT

iTrader: (1)

Sounds like a tuning issue. If it's trans related I would have to blame the B&M kit. IMO it's a piece of . They have you blocking the accumulator pistons with slugs that break these pistons. It could be your problem. Any check engine lights?

34koop

It has already smashed the ceramic accumulator which was replaced with the metal one. Do they smash these too ?

Does this explain fine at part throttle and not at WOT?

cheers
Mal