870 to 165 conversion successful
Thread Starter
Drifting
Joined: Nov 2001
Posts: 1,783
Likes: 2
From: Latham NY
870 to 165 conversion successful
I just converted my 85 870 ecm to the 165. I started with information from http://www.eecis.udel.edu/~davis/z28/ecm_swap/ .
BEWARE: some of the wire changes are incorrect.
Specifically:
870 165
---- ----
D12 D2
D13 A11
D14 D16
D15 D15
old C15 splices into the new D16
old D16 splices into D15
I was able to use my current MAF system without changing any wires or adding relays. When my burn-off module dies, then I will add the relays.
My pin-out were taken from my 85 shop manual and agree with the ones posted here:
http://www.chevythunder.com/fuel%20i...%20pinouts.htm
As soon as Craig Moates adapter arrives, I can start burning chips :yesnod:
It's running rich now because the memcal that came with the 165 is from a IROC with 22lb injectors and I have stock 24lb injectors.
[Modified by Bluevette85, 1:08 PM 9/27/2002]
BEWARE: some of the wire changes are incorrect.
Specifically:
870 165
---- ----
D12 D2
D13 A11
D14 D16
D15 D15
old C15 splices into the new D16
old D16 splices into D15
I was able to use my current MAF system without changing any wires or adding relays. When my burn-off module dies, then I will add the relays.
My pin-out were taken from my 85 shop manual and agree with the ones posted here:
http://www.chevythunder.com/fuel%20i...%20pinouts.htm
As soon as Craig Moates adapter arrives, I can start burning chips :yesnod:
It's running rich now because the memcal that came with the 165 is from a IROC with 22lb injectors and I have stock 24lb injectors.
[Modified by Bluevette85, 1:08 PM 9/27/2002]
Thread Starter
Drifting
Joined: Nov 2001
Posts: 1,783
Likes: 2
From: Latham NY
Re: 870 to 165 conversion successful (corvette0096)
Burn-off Module is behind the breadbox. I used mine but am getting a code 36 which I can disable in programming because the way the stock module does the burn-off is different than the computer controlling it. Swapping pins only took 45 minutes. Two of the wires had to be lengthened to reach. I used a jewelers screwdriver to release the pins. Have your prom burning equipment ready. I ran very rich with the camero memcal that came with the 165. 85's have 24lb injectors not 19 or 22 like what is programmed in the memcal.
Le Mans Master
Joined: Oct 2001
Posts: 5,302
Likes: 2
From: Atlanta GA
Re: 870 to 165 conversion successful (Bluevette85)
That is awesome that you don't have to change the relays. Will the swap somehow cause the MAF module and burnoff to go bad faster?
Also, what is the code 36 (don't have my book here) and what will it cause the car to do (if anything)?
[Modified by dtorc4, 1:47 AM 10/4/2002]
Also, what is the code 36 (don't have my book here) and what will it cause the car to do (if anything)?
[Modified by dtorc4, 1:47 AM 10/4/2002]
Thread Starter
Drifting
Joined: Nov 2001
Posts: 1,783
Likes: 2
From: Latham NY
Re: 870 to 165 conversion successful (dtorc4)
That is awesome that you don't have to change the relays. Will the swap somehow cause the MAF module and burnoff to go bad faster?
Also, what is the code 36 (don't have my book here) and what will it cause the car to do (if anything)?
Also, what is the code 36 (don't have my book here) and what will it cause the car to do (if anything)?
2. Code 36 is error code if the 165 ecm doesn't sense a certain voltage going thru the maf during burnoff. There's a 0.3sec delay before the 165 looks for this voltage and if it doesn't see it, a code is set. I think the 870 module works faster or doesn't send the maf signal to the ecm with the ignition off. I disabled this code in the ecm so no error code anymore.
[Modified by Bluevette85, 9:04 PM 10/3/2002]
