ECU question

sd88supra · 10-26-2008, 09:00 PM

I need an ECU for my N/A manual... will the one from a turbo work? I think it has to be manual too, but I don't know if the turbo is different.

f00g00 · 10-28-2008, 12:18 AM

Nope, you will need one from an NA.

shiftysupra · 11-02-2008, 01:09 AM

Yeah that would be due to the fuel ratio is diff... but i read somewhere you could use an automatic turbo ecu in a manual there was just something diff with the wiring... can anyone point me in the right direction in finding out how to do that... like the diagram?

sd88supra · 11-02-2008, 08:01 PM

I think it has to be '86.5-'88 N/A and manual tranny. Am I wrong?

btwilson86 · 11-02-2008, 10:25 PM

I believe that you are correct, 86.5-88 N/A ECU. You can use an automatic ECU to make it work, however you will have to do some creative wiring as the Reverse lights won't work when you put it in Reverse, and the clutch safety switch won't work. I believe there may be other issues, but I'm not positive on that

shiftysupra · 11-05-2008, 07:43 PM

i have an N/A harness and ecu for manual but it's a 92'.... so an 89+ not sure if it would work with an 88 engine...

sd88supra · 11-07-2008, 09:55 PM

I just got an N/A ECU off an '87. However, the letters 7M-GE are red as opposed to yellow like my original ECU. Mine has AE instead of AS like the one I took out. The one I took out is also slightly smaller in size. I've googled 1987 N/A ECU's and they're exactly like the one I just got. Makes me wonder if my ECU was the original to begin with.

Well, lets see what happens.

10-26-2008, 09:00 PM	#1
sd88supra 3" Exhaust Join Date: Oct 2005 Location: San Diego, Ca Posts: 190	ECU question I need an ECU for my N/A manual... will the one from a turbo work? I think it has to be manual too, but I don't know if the turbo is different. __________________ -1987 5 spd N/A with TEMS: low miles! All stock with the exception of electric fans and an '89 front bumper, Yokohama 225/50/16 with stock rims. It's a mess and in the garage. -1987 5 spd Turbo with TEMS: miss-matched tires, needs lots of work, but it runs! Project car. -1988 N/A auto targa: all stock except 18" rims with Falken 265/35/18 in rear and 225/35/18 in front; daily driver.

11-02-2008, 08:01 PM	#4
sd88supra 3" Exhaust Join Date: Oct 2005 Location: San Diego, Ca Posts: 190	I think it has to be '86.5-'88 N/A and manual tranny. Am I wrong? __________________ -1987 5 spd N/A with TEMS: low miles! All stock with the exception of electric fans and an '89 front bumper, Yokohama 225/50/16 with stock rims. It's a mess and in the garage. -1987 5 spd Turbo with TEMS: miss-matched tires, needs lots of work, but it runs! Project car. -1988 N/A auto targa: all stock except 18" rims with Falken 265/35/18 in rear and 225/35/18 in front; daily driver.

11-02-2008, 10:25 PM	#5
btwilson86 Super Moderator Join Date: May 2007 Location: Billings, Montana Posts: 1,034	I believe that you are correct, 86.5-88 N/A ECU. You can use an automatic ECU to make it work, however you will have to do some creative wiring as the Reverse lights won't work when you put it in Reverse, and the clutch safety switch won't work. I believe there may be other issues, but I'm not positive on that __________________ 1989 7MGTE R154 Targa Top White Package w/Blue Interior Driftmotion 57trim CT26, Upgraded Intercooler, 2.25" Hard Pipes, 3" Turbo Back Exhaust with Test Pipe, HKS VPC w/GM 3 bar MAP sensor, APEXi S-AFC, Walbro 255lph fuel pump, ProSport EVO Series Boost / Fuel Pressure / AFR gauges, Lotek a Pillar Gauge Pod, HKS Type 0 Turbo Timer, Eibach Lowering Springs, Tokico Illumina II TEMS struts, custom powder coated Motegi Racing TrakLite wheels

11-07-2008, 09:55 PM	#7
sd88supra 3" Exhaust Join Date: Oct 2005 Location: San Diego, Ca Posts: 190	Update I just got an N/A ECU off an '87. However, the letters 7M-GE are red as opposed to yellow like my original ECU. Mine has AE instead of AS like the one I took out. The one I took out is also slightly smaller in size. I've googled 1987 N/A ECU's and they're exactly like the one I just got. Makes me wonder if my ECU was the original to begin with. Well, lets see what happens. __________________ -1987 5 spd N/A with TEMS: low miles! All stock with the exception of electric fans and an '89 front bumper, Yokohama 225/50/16 with stock rims. It's a mess and in the garage. -1987 5 spd Turbo with TEMS: miss-matched tires, needs lots of work, but it runs! Project car. -1988 N/A auto targa: all stock except 18" rims with Falken 265/35/18 in rear and 225/35/18 in front; daily driver.

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10-28-2008, 12:18 AM	#2
f00g00 12psi boost Join Date: Aug 2005 Location: Kuwait Posts: 292	Nope, you will need one from an NA.

11-02-2008, 01:09 AM	#3
shiftysupra 3" Exhaust Join Date: Jan 2006 Location: Arizona Posts: 96	Yeah that would be due to the fuel ratio is diff... but i read somewhere you could use an automatic turbo ecu in a manual there was just something diff with the wiring... can anyone point me in the right direction in finding out how to do that... like the diagram?

11-05-2008, 07:43 PM	#6
shiftysupra 3" Exhaust Join Date: Jan 2006 Location: Arizona Posts: 96	i have an N/A harness and ecu for manual but it's a 92'.... so an 89+ not sure if it would work with an 88 engine...