my buddy just bought an 89 GXL, hes putting an 87 Tii under the hood what ECU should he get the 87 or the 89?

neither one will work easily. the 87 ecu will plug into the engine harness from the motor, but it doesnt plug in under the dash of the car. the 89 ecu is the other way around

he should go with the haltech? if he is swapping an na s5 motor for an s4 turbo motor and not upgrading the turbo or doing other power mods it wont be worth the time and money spent bc the power gains would not be that significant

i dunno steve put an haltech on his gtut2 swap (he ran it into a fence too, we only ruin rare cars here) and we'll see if theres a power gain to be had

i understand all that, but if he finds an 87 plug for under dash will it work? thats pretty much the question, he is shy on money now tho

with an s4 motor? there should be pretty good power gains, at least thats what i would expect. not that i have hands on experience with a haltech or anything, just going by what ive heard.

well im not sure if hes going to be doing anything else to the car, it is a shame ruining the rare car part but, it was his money he spent not mine, but he might do little mods, down the road like down pipe, intake, little things i dont think hes goning to upgrade the turbo

what rare car was ruined?

its not a factory 89 Tii, even tho, its a GXL model, i didnt think they came w/ Tii

im very confused. the gxl is probably the least rare model, and the tii was the only model that came with tii. it wasnt like an add on, it is the model/trim level

IM confused now too, o well, never mnd i guess then, aight

there is no gxl tii or gtu tii or anything like that. the only turbo car is the RX-7 Turbo II. does that help at all

yea that straghtened up my head, but then, why do i have a Tii set up in my GXL, o wait the guy i bought it from swapped motors too, i just hung the phone up w/ him, so i got the low downo what he did to it. he butchered the car up, but i got it for 1 grand so its not a complete waste

no its more complexicated then that. they didnt just change the connector, lots of wires are routed differently too

so what would you suggest? honestly

well first steve flipped his 90t2 with 50k on it. then he bought a gtus and we put the t2 motor into that then he ran it into a fence.



so to summarize. we've butchered a perfectly nice gtus, and totalled a low mileage 90 t2, and i drove my yellow fd off a cliff too. so we only ruin rare cars.

YOU dont

im just trying get get mine going again, he fucked this whole car up, but my buddy seems to be going in the right direction

now i understand about the ruining rare cars, that had me so lost

you need the s5 ecu and harness plus the s5 sensors and stuff, or go haltech/microtech/wolf

ok so i already got the N370 ecu, engine wiring harness now i just need to find the damn underdash harness and i should b good to go, right? but the trans is 87 i think same w/ motor, should i just switch the ends of the harnees to where they go? i really apprecitae all this help fellas! https://www.nopistons.com/forums/pub...1047683894.gif

but also money is kinda short in my pocket so is there a really cheap way around things here or do i need to replace all sensors, injector, etc etc

this:





was about this: