london07

~180 in my old '03 M3. ~160 in my 1j sc300.

I have a 1995 SC300 with a 1jz-gte engine and tranny, FMIC, 255lph fuel pump, ssqv and a single 3 inch straight pipe. my only real issue with the car is the transmission, recently it has been lurching pretty bad when shifting from 1st to second. my OD light randomly flashes at me regardless of whether the overdrive button is pushed in or not, and sometimes the car will put itself into limp mode... the engine itself is in perfect order, it idles fine and has brand new spark plugs. ive heard that the 1JZ (soarer) auto tranny is pretty solid up to about 450whp, and my car right now is just shy of 400whp. any ideas what it could be? i hope this is a simple electrical problem, but the aamco 'specialists' couldnt even get my ECU to throw any codes.