1st gen ECU in 2nd gen - 3000GT/Stealth International Message Center

Nireez · 01-26-2006, 07:49 PM

I have been told by a couple people that a 1st gen Fed-Spec ECU will fit a 95 Fed-Spec N/A. I used the pin ID page on stealth316.com for wiring in my AFR. I referred to the 91-93TT ECU's for the ID's. I have done research on this and have found a couple pins are different. One just deals with EGR which is no big deal and the other is for the radiator fans. This can be rewired easily if it is necessary. My question is has anyone here tried using a 1st gen ECU in their 2nd gen with an N/A harness. I would just like to hear some feedback from people who have ACTUALLY tried this. I will be getting an ECU from a 92 TT shortly.

Nick

Nireez · 01-26-2006, 09:40 PM

I guess I'll be the first. I'll let everyone know what happens next week

LVA3KGT · 01-27-2006, 12:11 PM

When we put my 91TT ECU and harness in my 97SL, we did have to re-wire the fans. We ended up using a toggle switch, that is now mounted just below the radio.

SLguy · 01-27-2006, 12:45 PM

Quote:

Originally Posted by LVA3KGT

When we put my 91TT ECU and harness in my 97SL, we did have to re-wire the fans. We ended up using a toggle switch, that is now mounted just below the radio.

a 97 SL is also a cali-spec N/A, the pins should not line up very well in that car. However, the pinouts do match up just fine in the 94-95 fed-spec N/A's vs. a first gen TT. I did compare the pins, and the only differeces were pins that aren't needed, the VICS in the intake plenum on the N/A, the TT does not have it, and a 2nd O2 sesnor. However, for the record, a friend of mine with a 91 ES Stealth drives his car around off of my 94 ECU, without any problems, and no modifications were made to the harness. Plugged it right in and runs just fine.

Nireez · 01-27-2006, 04:45 PM

Good to know, I am ordering my ECU today. I should have it sometime next week and will let everyone know the results. By looking at the pinouts I find no reason anything should be different other than the obvious.

Nick

Nireez · 01-27-2006, 05:23 PM

Quote:

Originally Posted by SLguy

a 97 SL is also a cali-spec N/A, the pins should not line up very well in that car. However, the pinouts do match up just fine in the 94-95 fed-spec N/A's vs. a first gen TT. I did compare the pins, and the only differeces were pins that aren't needed, the VICS in the intake plenum on the N/A, the TT does not have it, and a 2nd O2 sesnor. However, for the record, a friend of mine with a 91 ES Stealth drives his car around off of my 94 ECU, without any problems, and no modifications were made to the harness. Plugged it right in and runs just fine.

Were the fans functioning as usual?

Nireez · 02-09-2006, 05:47 PM

I just dropped the TT ECU in, it was from a 92. I have no CEL, the radiator fans are functioning normal and my idle is smoother. I do have a couple problems with my idle but that just deals with the BISS screw. My correction is set at 0 correction all across the board. I am only running off of one o2 sensor at the moment and I think this might be the reason why it has a slight studder under normal load. It goes away under WOT. I will keep updating this thread when I get more of it tuned.

Nick

LVA3KGT · 02-09-2006, 07:27 PM

Thanks for the update, good luck- and be sure to keep us posted!

Mike

Tricky222 · 02-09-2006, 07:53 PM

Thats definietly good to know. Are you using a datalogger on it, if so for which year?

Wildarmz · 02-09-2006, 09:37 PM

Im sure you all have checked this out:
1g harness in a 2g body
right?

keep us posted on your progress/discoveries. i have a 92 TT ecu that i'd like to use also.

01-26-2006, 07:49 PM	#1 (permalink)
Nireez Forum Member Join Date: Jul 2004 Location: Tulsa Drives: 95 3000GT BaseTT Trader Rating: (13)	1st gen ECU in 2nd gen I have been told by a couple people that a 1st gen Fed-Spec ECU will fit a 95 Fed-Spec N/A. I used the pin ID page on stealth316.com for wiring in my AFR. I referred to the 91-93TT ECU's for the ID's. I have done research on this and have found a couple pins are different. One just deals with EGR which is no big deal and the other is for the radiator fans. This can be rewired easily if it is necessary. My question is has anyone here tried using a 1st gen ECU in their 2nd gen with an N/A harness. I would just like to hear some feedback from people who have ACTUALLY tried this. I will be getting an ECU from a 92 TT shortly. Nick

01-26-2006, 09:40 PM	#2 (permalink)
Nireez Forum Member Join Date: Jul 2004 Location: Tulsa Drives: 95 3000GT BaseTT Trader Rating: (13)	Re: 1st gen ECU in 2nd gen I guess I'll be the first. I'll let everyone know what happens next week

01-27-2006, 12:11 PM	#3 (permalink)
LVA3KGT TPW Educator Join Date: May 2002 Location: FeeNuX Drives: with EDFC at 0/0 Trader Rating: (1)	Re: 1st gen ECU in 2nd gen When we put my 91TT ECU and harness in my 97SL, we did have to re-wire the fans. We ended up using a toggle switch, that is now mounted just below the radio. __________________ 97 SLtt World's fastest fwdTT 97SL in Phoenix 410 Ft/lbs of torque-steer and 390HP to the front wheels, making 1-3 gear useless @17psi. Built and tuned by 3SX (Firebird) = Best 60ft 2.4 Best ET 13.8 , best trap 110.8MPH , picked up almost 30mph on the big end of the track. 3SI member # 5422

01-27-2006, 04:45 PM	#5 (permalink)
Nireez Forum Member Join Date: Jul 2004 Location: Tulsa Drives: 95 3000GT BaseTT Trader Rating: (13)	Re: 1st gen ECU in 2nd gen Good to know, I am ordering my ECU today. I should have it sometime next week and will let everyone know the results. By looking at the pinouts I find no reason anything should be different other than the obvious. Nick

02-09-2006, 05:47 PM	#7 (permalink)
Nireez Forum Member Join Date: Jul 2004 Location: Tulsa Drives: 95 3000GT BaseTT Trader Rating: (13)	Re: 1st gen ECU in 2nd gen I just dropped the TT ECU in, it was from a 92. I have no CEL, the radiator fans are functioning normal and my idle is smoother. I do have a couple problems with my idle but that just deals with the BISS screw. My correction is set at 0 correction all across the board. I am only running off of one o2 sensor at the moment and I think this might be the reason why it has a slight studder under normal load. It goes away under WOT. I will keep updating this thread when I get more of it tuned. Nick

Sponsored Links
3000GT/Stealth International Message Center Advertisement

02-09-2006, 07:27 PM	#8 (permalink)
LVA3KGT TPW Educator Join Date: May 2002 Location: FeeNuX Drives: with EDFC at 0/0 Trader Rating: (1)	Re: 1st gen ECU in 2nd gen Thanks for the update, good luck- and be sure to keep us posted! Mike

02-09-2006, 07:53 PM	#9 (permalink)
Tricky222 ***** User Join Date: Jul 2004 Location: Southlake/San Marcos Drives: 91 VR4 Trader Rating: (63)	Re: 1st gen ECU in 2nd gen Thats definietly good to know. Are you using a datalogger on it, if so for which year? __________________ Bunch of Stuff For Sale: Single Turbo Kit:http://www.3si.org/forum/f4/100-comp...bo-kit-427126/ ITS 74mm Turbo DBB:http://www.3si.org/forum/f4/its-74mm-dbb-turbo-427585/ Front Mount Oil Cooler: http://www.3si.org/forum/f4/front-mo...-setup-429431/ RPS MAX clutch: http://www.3si.org/forum/f4/rps-max-...el-awd-427930/ 300M 18spline Output shafthttp://www.3si.org/forum/f4/18-splin...-shaft-429646/

02-09-2006, 09:37 PM	#10 (permalink)
Wildarmz Brees-y in the Big Easy Join Date: Aug 2003 Location: Franklin, TN Trader Rating: (103)	Re: 1st gen ECU in 2nd gen Im sure you all have checked this out: 1g harness in a 2g body right? keep us posted on your progress/discoveries. i have a 92 TT ecu that i'd like to use also. __________________ interested in helping out with an established 3S site? pm me