5sfte giving me grief., need some expert feedback Options

[epinasty]

My newly installed ct-26 or something else with my setup is acting up a bit.
For what reason i haven't discover yet my car decides to start boggin down really bad
and and dies. Check engine light is on. It happens after i get on it a little.
I accelerated (not a ridiculous amount honestly..) through an intersection and got up to about 50 mph
and was just going constant 50 or so down the road and it started boggin. I let off the gas and coasted and then shiffted back into 5th and it bogged and died. Assure you i didnt miss shift and kill it. Similar thing happend later that night. with no coasting after it starts to bog. If i let the car sit off for ~5 min it starts up and goes fine.
If i try to start it before i let it sit long enough it bogs up and down around 600 rpm and then dies.
All i have installed is the turbo and all the neccessaries and an oil pressure gauge.

Possible facts that could help diagnosis:

i have the supra mkIII injectors
oil pressure gauge only (got boost gauge today)
no timing or fuel controllers to speak of.
no intercooler. It was about 40 degrees the night it bogged and died.
I haven't driven over 3200 rmp since and it seems to run ok.
At stop lights or signs @ idle the oil pressure reads like 2 psi.


My thoughts.. Turbo wheel is not spinning freely and bogs the exhaust gas and kills the car.
Boost or pressure somewhere is leaking and messing up the whole rhythm of the car.
I can drive the car around like a granny and nothing goes wrong but I didnt turbo my car to
drive slower than I can accelerate on my bicycle. Help!!!!!!!!!!!!!!!!!!!!!!!!!!