Mustang vs 5.0 Thunderbird computer!? Reply #15 – January 23, 2011, 12:22:51 AM I'm having trouble finding the info I am searching for ,But I know I have read here on this site that an auto trans computer cant be used in a manual trans car , I forget why not but there was a reason posted .I'll continue to search .... again I may be wrong Quote Selected
Mustang vs 5.0 Thunderbird computer!? Reply #16 – January 23, 2011, 12:25:16 AM He had it backwards. The timing curve and fuel mapping in auto ECM's are more aggressive than in manual ECM's. In fact some guys with manual tranny cars mistakenly swap in auto ECM's, thinking they'll get better performance out of them. The difference in the programming tables is so small that you won't ever notice a difference in performance.If you are gonna use an auto ECM in your manual tranny car, you're probably gonna have to repin your O2 harness. Be warned. If you don't verify that your pins are correct, you could fry your ECM. The pin placement is different in auto tranny cars and manual tranny cars, with regards to the O2's. Quote Selected
Mustang vs 5.0 Thunderbird computer!? Reply #17 – January 23, 2011, 12:30:12 AM Quote from: 88 Blackbird 5.0;350575I'm surprised he said that, because the timing curve and fuel mapping in auto ECM's are more aggressive than in manual ECM's. In fact some guys with manual tranny cars mistakenly swap in auto ECM's, thinking they'll get better performance out of them. The difference in the programming tables is so small that you won't ever notice a difference in performance.If you are gonna use an auto ECM in your manual tranny car, you're probably gonna have to repin your O2 harness. Be warned. If you don't verify that your pins are correct, you could fry your ECM. The O2 harness info seems familiar Quote Selected
Mustang vs 5.0 Thunderbird computer!? Reply #18 – January 23, 2011, 12:49:20 AM Here are some threads that cover this topic guys. http://www.allfordmustangs.com/forums/5-0l-tech/186779-switch-car-auto-do-i-need-new-computer.htmlhttp://forums.corral.net/forums/showthread.php?t=606633&highlight=auto+manual+computerhttp://forums.corral.net/forums/showthread.php?t=1257444&highlight=auto+computerhttp://forums.corral.net/forums/showthread.php?t=929887&highlight=auto+computerhttp://forums.corral.net/forums/showthread.php?t=722092&highlight=auto+computerhttp://www.buckeyestangs.com/vb/showthread.php?29144-A9L-vs-A9P-computer&highlight=auto+speed+computer Quote Selected
Mustang vs 5.0 Thunderbird computer!? Reply #19 – January 23, 2011, 02:08:07 AM OK Vic , I spent a few hours reading and researching this and the conclusion I reached is we were both wrong in stating absolutes :) It seems that there are programming differences that may or may not cause drive-ability issues The 02 sensor harness issue must be addressed if running an auto computer in manual car My car has a manual trans computer with an auto trans and I personally have no issues ,my car runs great . Quote Selected
Mustang vs 5.0 Thunderbird computer!? Reply #20 – January 23, 2011, 03:02:02 PM Yea. You know what happens when you state absolutes. It can have a way of coming back to bite you in the arse. Lol Quote Selected
Mustang vs 5.0 Thunderbird computer!? Reply #21 – January 23, 2011, 04:59:33 PM Quote from: 88 Blackbird 5.0;350619Yea. You know what happens when you state absolutes. It can have a way of coming back to bite you in the arse. Lol Yes it can ,, in this case I actually learned something for a change though Quote Selected
Mustang vs 5.0 Thunderbird computer!? Reply #22 – January 23, 2011, 08:23:31 PM To the OP: I have an '89 5.0 from a Stang GT, as well as an EEC (it's a DA1) from a Stang, the engine and the eec are linked with the Thunderbird's stock 5.0 engine harness. However, I do NOT have mass air (yet) but that is nothing to lose sleep over, as it can be added in very easily.it's not "pure f*ckin' magic" it's just plug and play....we didn't get the HO motor from the factory, but at least Ford did it right by enabling us to swap it in with a minimum of fuss and cuss. lol Quote Selected
Mustang vs 5.0 Thunderbird computer!? Reply #23 – January 30, 2011, 02:01:32 PM I have a da1 computer if needed,88ho5spd,or i have a 86gt5spd,never gonna need them!!! Quote Selected
Mustang vs 5.0 Thunderbird computer!? Reply #24 – February 06, 2011, 02:04:45 PM It's alright, I already got a couple harnesses, computer, mass air conversion etc. Thanks though! Quote Selected
Mustang vs 5.0 Thunderbird computer!? Reply #25 – February 26, 2011, 02:42:00 PM Im thoroughly confused.87 bird, aod, ho & mass air swap. using a9l that came with a bunch of other parts. No amount of reading the corral links clears it up for me. Our(at least my) harnesses do not have a "jumper" wire on the oxygen sensor connector. 6 in, 6 out, none loop.I pinned the two mass air wires, tapped the power and ground. Moved the other two mentioned on cool cats. Have not decided about the other wiring(2nd fuel pump lead, and the other one(vss?)).Do I need to buy a manual o2 harness? Hell, most of those are 70-80$ Might as well find a a9p if that is necessary???Do we(tbird guys) need to worry about voltage on pin 46( i think)??? Quote Selected
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