Is the ECM in a 1986 Camaro p/n 1227165 a 8192 baud or a 160 baud serial data??

160 baud. It's covered on my website.
http://www.isthq.com/~dan/efi.html

Specifically, it's covered here: http://www.isthq.com/~dan/aldl_35.htm

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"no one checks a private website unless you shamelessly promote it anymore"
Daniel Burk http://www.isthq.com/~dan/fcar.html
'84 Trans Am WS6/L69
KB SFC, Moser axles, Torsen Diff. PST suspension, Braided stainless brake lines,
5-point racing harness, Koni struts, 11-inch rear disks,Spohn Adj. torque arm,
Ported 305 heads w/1.94"intake valves, Comp Cams XE262H, Griffen alum. radiator,
Speed-sensitive steering conversion, underdrive pulleys, Crane Hi-6 & more. 1.05g skidpad verified.

[This message has been edited by ws6transam (edited July 24, 2000).]

I'm under the impression that the 165 starts at 160 and then switches to 8192.

All I know is my truck '747 ecm running at 160 displays data alot slower than my TA which has a '165.

Check out:
http://www.eecis.udel.edu/~davis/z28/ecm_swap/

[This message has been edited by Brent (edited July 24, 2000).]

8192

The 85 ECM is 160, but its a different PN too.

the '85 ECM is the older, 160 baud "870" computer that was used. In '86 they went to the 8192 baud "165" ECM, which is 51 times faster in collecting and transmitting diagnostic data. I just had my old 870 replaced with a 165 ECM and a custom burned prom. There are about 10 repinnings and a couple splices that are required, but the fact that I no longer had to use that god awful Burnoff module was enough for me to scrape up the money for the right parts. Details can be seen on my web page below.

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Kevin Irving
85 Trans Am WS-6, 305 TPI, custom burned '86 PROM with '87 "165"ECM, Accel Supercoil & 8.8 Wires, MSD 6AL, Aluminum Driveshaft, TB Coolant Bypass, Ported Plenum, Modified MAF, Cyclone Fuel Pump, JET Airfoil

Veiw my car at: http://www.geocities.com/transam85tpi/TransAm.html

OK, it's a toss up.

I got two votes for 160 baud and two votes for 8192 baud.

I need one more to be a tie-breaker :>

86 is 8192 baud

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85 calif. iroc
383/A4
9" rear

Looks like 8192 is the winner with 3 votes.

160 baud only got 2 votes. :>


Does anyone know for sure? I've checked about 50 sites looking and all they say is the older computers were slow 160 baou while the new 'puters are really fast at 8192.

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86 Camaro Sport
383 Speed-O-Motive Crate Engine, Trick Flow Heads, 58mm Accel TB, 3.73 Auburn Pro, SLP Cold Air Induction and Headers, Dynomax Cat-back, Serpentine belt setup.

John the "165" computer is definately 8192 baud. I know from experience... trust me. I just had one put in my car. Your best bet would be to do the same. There are some repinnings that need to take place with which I had a lot of help but the swap was DEFINATELY worth it. Check out this link for all the details on how to do it... http://www.ece.udel.edu/~davis/z28/ecm_swap/

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Kevin Irving
85 Trans Am WS-6, 305 TPI, custom burned '86 PROM with '87 "165"ECM, Accel Supercoil & 8.8 Wires, MSD 6AL, Aluminum Driveshaft, TB Coolant Bypass, Ported Plenum, Modified MAF, Cyclone Fuel Pump, JET Airfoil

Veiw my car at: http://www.geocities.com/transam85tpi/TransAm.html

[This message has been edited by Kevin Irving (edited July 25, 2000).]

Update, I just found a website that says straight out that the 1986 computer IS 8192 baud.

Here it is:

http://www.techedge.com.au/vehicle/index.htm

Could be that the ECM is 8192... My site info is taken from an internally published GM document, not from experience. It is a table of byte codes that I published before any of this data became general knowledge on the internet. I haven't updated it since, nor have many people offered feedback on the accuracy of the info.

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Daniel Burk
http://www.isthq.com/~dan/fcar.html
'84 Trans Am WS6/L69
KB SFC, Moser axles, Torsen Diff. PST suspension, Braided stainless brake lines,
5-point racing harness, Koni struts, 11-inch rear disks,Spohn Adj. torque arm,
Ported 305 heads w/1.94"intake valves, Comp Cams XE262H, Griffen alum. radiator,
Speed-sensitive steering conversion, underdrive pulleys, Crane Hi-6 & more. 1.05g skidpad verified.