Auto to Manual ECU

[kmart64]

After doing some research, this question was kinda messed up. Some people said I didn't need a new ecu, and that I could use my automatic ecu as long as I disconnected the tcu, and then anotehr post I saw later said I needed to get a manual ecu. can someone please clarify? thanks

[NAiL05]

What ECU are you planning to use?

[kmart64]

any more imput?

[DjSpeedy]

That wasnt an answer it was a question.

What ecu are you going to use?

In short it usually doesnt matter, since there really is no difference.

[i'm the girl]

That wasnt an answer it was a question.

What ecu are you going to use?

In short it usually doesnt matter, since there really is no difference.

don't hook up the tcu. at least - all the p39's i get a hold of are auto, and i test them in my manual and they work fine - i have seen the same with the pt3 (stock ecu) when friends have done tranny conversions

as far as i know, at least with OBD1 ecu's - you should be fine by just not hooking in the tcu - YES, inside the ecu there are components that would talk to the tranny, but by not hooking in a tcu, your car will assume manual. because a manual tranny has everything to with cables and nothing to do with computers - plus all your sensors (like speed) talk to your ecu and not your tcu -- does that make sense?

[ACCLUDE91]

It will sometimes set the CEL off of r a TCU communication error. Let us know what kind of ECU you want to use. Some modifications can be done to convert it to a manual ECU.

Like the PT3's for example:

Here's auto


and here's manual


They look almost identical but there is a difference. Auto has the E170 transistor and R85 resistor and the resistor in the #1 spot next to the 66911 chip. Manual does not have E170 or R85 and has the resistor in the #4 spot next to the 66911 chip. You can physically modify the board and use an manual bin file instead of auto and it will act just like a manual with no chance of TCU error codes. This is just one example so let us know what ECU you plan on using.