ECM Swap
03-04-2003, 03:00 PM
#1
Junior Member
Thread Starter
Join Date: Oct 2002
Location: Destin, FL
Posts: 42
Likes: 0
Received 0 Likes
on
0 Posts
ECM Swap
I have an 89 firebird, 350 TPI, MAF car.
I want to change to SPeed Density. There is a car locally being parted out. 92 Camaro 305 throttle body. Can I use this computer? I realize other things are needed (wire harness, sensors, etc.). Really just curious about the computer.
Thanks
I want to change to SPeed Density. There is a car locally being parted out. 92 Camaro 305 throttle body. Can I use this computer? I realize other things are needed (wire harness, sensors, etc.). Really just curious about the computer.
Thanks
03-04-2003, 03:10 PM
#2
Member
Join Date: Feb 2003
Location: TEXAS
Posts: 205
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1987 Monte Carlo SS
Engine: 5.7L TPI
Transmission: 4 spd auto
subject
I want to do this to my car to but was wondering if I could do it with just the ECM and knock sensor swap or do I need to get a whole wiring harness too?
03-04-2003, 03:51 PM
#3
TBI cars use a computer with about as much calculating power as those old solar powered calculators that came free with a carton of cigarettes.
The computer you need showed up on the Speed Density TPI f-bodies and a bunch of V6 cars (barettas, etc). It's the 730 ECM.
The computer you need showed up on the Speed Density TPI f-bodies and a bunch of V6 cars (barettas, etc). It's the 730 ECM.
03-04-2003, 03:52 PM
#4
Member
Join Date: Dec 1999
Location: Peoria,Az,USA
Posts: 183
Likes: 0
Received 0 Likes
on
0 Posts
Car: 86 IROC
Engine: ZZ4
Transmission: T5 WC
Go and dig around here http://www.eecis.udel.edu/~davis/z28/
03-04-2003, 04:51 PM
#5
Junior Member
Thread Starter
Join Date: Oct 2002
Location: Destin, FL
Posts: 42
Likes: 0
Received 0 Likes
on
0 Posts
Will the (1227749 ECM. 1991-1993 GMC Syclone/Typhoon, 1988 Quad-4, 1987-90 Turbo Sunbird) ECM work for a non boosted car??.
I plan to eventually get a supercharger later on. This would allow for that upgrade without doing the ECM swap twice.
Thanks
Edit: On second thought. I will just do the regular Speed Density COnversion first. Might be easier for tning purposes this way.
I plan to eventually get a supercharger later on. This would allow for that upgrade without doing the ECM swap twice.
Thanks
Edit: On second thought. I will just do the regular Speed Density COnversion first. Might be easier for tning purposes this way.
Last edited by GTAracer; 03-04-2003 at 05:13 PM.
03-04-2003, 06:47 PM
#6
Supreme Member
Join Date: Jun 2000
Location: the garage
Posts: 1,612
Likes: 0
Received 0 Likes
on
0 Posts
Car: 84 SVO
Engine: Volvo headed 2.3T
Transmission: WCT5
Axle/Gears: 8.8" 3.73
For the record a 730 will work with $58 SyTy code, provided you use a SyTy calibration, with the harness repinned to match a SyTy and add a 2-Bar MAP sensor. I swapped out my 749 on the Malibu, and without ANY changes to the prom or harness(SyTy pinout), swapped in a 730 in place of the 749 and everything worked as it should.
Now mind, it is important that you use saturated (high imp) injectors, and repin the harness as a SyTy (see diy-efi ftp site for wiring diagrams) as a 730 only has one injector driver. The 749 has a second driver in order to run P/H injectors (4 with stock FETs) in the Turbo Sunbird, it is not needed if you use TPI injectors.
Yes a 749 will run in a non boost application but the MAP must be changed to a 1 bar and 90-92 SD code loaded into the prom. Also the harness will have to be wired as a 90-92 F-body.
Basically the reverse of swapping to a 749 from a 730.
Now mind, it is important that you use saturated (high imp) injectors, and repin the harness as a SyTy (see diy-efi ftp site for wiring diagrams) as a 730 only has one injector driver. The 749 has a second driver in order to run P/H injectors (4 with stock FETs) in the Turbo Sunbird, it is not needed if you use TPI injectors.
Yes a 749 will run in a non boost application but the MAP must be changed to a 1 bar and 90-92 SD code loaded into the prom. Also the harness will have to be wired as a 90-92 F-body.
Basically the reverse of swapping to a 749 from a 730.
Thread
Thread Starter
Forum
Replies
Last Post
