FITECH THROTTLEBODY EFI 600 AND OEM TRANS CONTROLLER.

[tomy]

I HAVE A 92 C1500 WITH A 5.7 AND 4L60E OUT OF A 93 IF I CHANGE MY FUEL AND ENGINE MANAGEMENT SYSTEM TO FITECH EFI CAN I USE THE ORIGINAL ECM TO CONTROL MY TRANS IF I TAP INTO THE FITECHS TPS SENSOR AND KEEP THE SPEED SENSOR CONNECTED ON MY TRANNY?

 

[docstoy]

I would think it would be whatever FITECH recommends for your application.

 

[Komet]

FiTech doesn't like harness modifications, especially signal splitting. They offer a MPFI setup with trans control, otherwise I think Aces has a TBI unit with a trans control module you can add, but maybe that's LS only.

 

[tomy]

FITECH DOES HAVE AN ADAPTER TO SPLIT THE SIGNAL JUST WONDERING IF THE OEM ECM WILL CONTINUE TO WORK FOR MY TRANSMISSION

 

[Erik the Awful]

Isn't your transmission a 4L60 and not a 4L60e? I believe 1993 was the year of the swap over. If you have a TV cable, you have a 4L60 and controlling it is fairly easy. If you have the 4L60e you need a computer to control it.

With a 4L60 the only thing the computer does is control torque converter lockup, and even that can be replaced with a vacuum switch and a bit of wiring. I have a Holley Sniper on my truck and once I got the TV cable set up correctly it works great. I haven't replaced the computer with a switch yet, but I do have the switch on hand. The computer doesn't care that it can't communicate with the engine, it still operates the TCC just fine.

 

[Scooterwrench]

If you can pull off the TPS and tach you should be good to go. You will want to access the .bin in the truck PCM and uncheck all the engine related flags and maybe disable the checksum.

 

[PlayingWithTBI]

Isn't your transmission a 4L60 and not a 4L60e? I believe 1993 was the year of the swap over.

OP stated his engine and trans are out of a 93.

I HAVE A 92 C1500 WITH A 5.7 AND 4L60E OUT OF A 93

 

[Erik the Awful]

Geez, I read it twice and still missed that. Long day at work.

 

[TagAllen]

My truck is a 95. I did a carb swap initially. I used the factory computer to control my transmission. I mounted a tps on my carb.