losing power with load, tuning question.

This cars really odd..

For anyone who doesnt know the car/motor it consists of a 342ci stroker, 57mm turbo, Edel heads/intake, stock cam (1.6rr's)373 gears, stock AODE.

Now for tuning with the tweecer, i havent messed with a whole lot. Ive bumped the CID to 342ci, 42lb injectors, 42ProM maf, and raised th low end timing a tad ( 4*)


The car is a complete animal until you hit 3rd gear, with some load on the motor. I mean it pulls nice, but you can defintaly feel it drop off in power.
Boost stays around 9-10psi all through the gears. I do have some serious boost leaks, but it manages to stay around 10psi.

So basically, without alot of load on the motor, the thing pulls like a train.. when it catches traction, and some load.. it drops off in power. It also breaks up real bad past 5500rpms..Im almost certain thats ignition, or spark blow out, by the sound of it.

Oh yea: datalogging has shown 199% load figures under boost. 80% cruise. with the CID set to 342ci. Whats up with that?

I havent even checked the plugs in months.. They are Autolite 23's gapped at .32 i believe

that is true, thats why i run a pretty tight gap at .32 I could go down to 30, but its probably more so a need of better ignition, then plug gap.

as for ignition the only thing i have is an MSD coil.

As for the a/r under boost.. Last time i had the car on a dyno i was making 15psi, 19* total timing, running in the 8 range on the a/f..
Now im running 10psi, and have bumped the timing 5* more, and the car seems faster on 10psi then it did on 15.. I still get the black clouds, as i did when i had it dynoed.