KA-T help

[nevaland9]

ok i have a 91 fastback. the motor was recently turbo'd T04E, FMIC, external waste gate etc.(still using stock fuel system.) the car has a problem when i floor it in any gear, the turbo spools but the car goes no where it feels like it hits a wall. i recently changed the wastegate spring to a 5.80 psi spring because i thaught it was just leaning outdue to over boosting on the stock injectors but it still does it. but if you go on the throttle half way or quarter way you can rev the car out to any rpm. i have no idea what it is i heard the speed censor goes bad and thats what stops it but it never did this before the turbo. tomorrow im going to disconnect the speed censor and see what happens, hopefuly someone can help me out. thanks

[breakindrifts]

Have you already tried asking this on www.ka-t.org and www.phatka-t.com?

[orion::S14]

Before you go flooring it anymore, GET SOME MORE FUEL!

FMU, 370cc + S-AFC, whatever...the stock fuel system can only support ~190rwhp...that less than 4psi from ANY T04E compressor.

Once you've addressed that, then check for boost leaks.

- Brian

[DP_Michelle G]

i remember you posting the same problem you are having now last month. you should go back to that old post you had. alot of people posted in it and gave you a few hints as to what your problem is.

[NemeGuero]

or your clutch.. stock clutch won't grab under boost

[nevaland9]

which one is the speed sensor? the last one or the one before the last one?

[NemeGuero]

the speed sensor wouldn't cause those problems. it's the one on the rear most end of the transmission.