auto box fault

[Naughty colin]

The hold warning light flashes after a hard launch,why.
Also how can i get off the 1/4 mile start line faster other than building the revs up on the foot brake,this also gives the hold warning flashing .
This stops me from running first gear to max revs.
HELP ME/

[slippers]

I\'m no expert but depending on your series car, a flashing hold light means you\'ve got an error message stored.  Do a check (if you can) and read the number off.

I\'m guessing its a torque overload type thing (very precise i know).  Getting an auto to leave the line faster than stock, like most things, will probably mean some comprimise to normal driving.  You\'ll probably need a higher stall converter (definitly if your large single turbo) and you could get around the ATM ecu by going to a manual valve body.  Both of which will change the way the car drives to some extent.  I wonder if changing the rear diff ratio to a manual diff would help some too?  All things to get you thinking, and lots of guys on ausrotary have good experience with the jatco box so they may be able to offer more concrete advice.

Regards
Jon

[oddball]

when my car was auto, once I had a P.F.C. installed the hold light used to flash constantly and I lost the hold function.  Stock ecu hold function worked fine.  Have you a P.F.C. ?

[yehreally]

same probelmo with auto and pfc :reallymad .....added more earthing wires and and an apexi volt stabiliser and same thing happened but, took a bit longer :yes soooooo more speeeed !

[Naughty colin]

I am running a nightsport ecu with digital boost contol set to 1.1bar,lower the boost and the fault wont occur as regular,but thats boring.
Oddball you said you were running auto,does that mean you have changed it to manual,is that a easy conversion,i am a confidant spanner man so i guess its a drive way job.
Thanks slippers i am looking into rear diff change and a high stall.

[oddball]

REWORX at Portsmouth did the conversion for me, I supplied the parts.

[Naughty colin]

Cheers oddball found thread on this conversion so am looking into it.