seen it befor
 

the problem im having is the dash connection's for the ecu i just need to know how to wire it in, im also looking into getting a 90-92 ecu for the 7mgte, m/t. this way i could use it with my 91 harness, but if i guess right there will be connector's on the 88 block and head that wont work with the 91 harness... im stuck in a dark place... lol... HELP :dunno:

Buy another harness??

good luck.

i am considering useing my 91na harness
 

no not buying another i have a whole nother motor blown... but will a 91 na harness wirk with a 91 turbo ecu and a 88 turbo block and head? i will be dyno tuneing it since i have 60+ wiseco pistion's, eagle rod's, shaved and polished block and shaved head and the whole ten with the block and head the 1uz-fe afm and 550 cc injector's 3inch intercooler 3 inch exsoust, a t67 turbo, t4 manafold, 50mm wastegate, 2mm headgasket, arp head stud's and who know's what elce, to much... im buying a coulpe of part's still. but im mostly there that's why im asking what all you guy's know befor i try to finish. these are the combonation's i can try, i have the 88 turbo ecu motor and r-154 tran's, i have the 91 na with motor ecu and w58 or what ever the tran's are both 5-speed, and both have compleat wire harness, or looking to buy an 91 or 90-92 turbo ecu m/t , what will be the simplest, oh mind the fact's one thing not changing is the 91 dash connecetion, and the 88 turbo block, so...

Err, I don't have the time right now but I am sure that in the link I supplied it states what ecu will or wont work with 86.5-88 ecu etc...

Simalar Project
 

Here is my predicament..... I have an 86.6 Body, and a 90 GTE engine. Do I use the existing harness on the 90 GTE engine and couple it to the 90 ECU? OR... do I swap in an 88 GTE under-dash harness and cluster, then use an 88 GTE engine harness and ECU. I have all the wiring from 3 different Supras, and clusters from 86.5, 88 GTE, and 90 GTE. Will I have swap in a GTE harness to the engine bay/chassis? I just want the easiest way to achieve working telemitry and functionality.

If I understand you correctly I think it would be easiest to us the 90 stuff to go with the 90 stuff rather than swapping this and that out.. Just seems easier to me. Besides that.. THREAD JACK!

88 ECU and engine harness and GTE tachometer would probably be the easiest route, then you shouldn't have to worry about the dash harness.