Quick 93 ECM question

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Apr 9, 2011 | 06:09 PM

iWon

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From: Wisconsin

Quick 93 ECM question

All of the ECM's from 93 are the black plastic ones with the removable PROM chips right? Even the M6 ones?

Reason I'm asking is because I payed for a 93 ECM from a guy on here and got the newer style metal ECM, no PROM chip.

Apr 10, 2011 | 12:42 AM

litch2004

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From: Austin

My 93 ecm is metal with a removable chip. It is in a plastic cradle to screw into the body

Apr 10, 2011 | 01:31 AM

lt1-xjs

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From: centerville, ohio

Quote:

Originally Posted by iWon

It's a black metal case with 4 square ports and hopefully a 4 letter code. A small cover plate has to be removed to expose the chip.

Apr 10, 2011 | 08:10 AM

James Montigny

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Quote:

Originally Posted by lt1-xjs

It's a black metal case with 4 square ports and hopefully a 4 letter code. A small cover plate has to be removed to expose the chip.

Exactly.
http://i38.photobucket.com/albums/e1...e/IMG_9067.jpg
http://i38.photobucket.com/albums/e1...e/IMG_9068.jpg

Inside, you'll find a long blue plastic module that clips to the board.
http://www.thirdgen.org/tech/images/prom/1138118.jpg?
If the ECM has already been tuned, it probably has a memcal piggyback adapter
which "inserts" the new chip between the board and the blue module.
http://www.thirdgen.org/tech/images/prom/1138117.jpg

Here's some thirdgen info, most of it also applies to the 93 LT1
http://www.thirdgen.org/promintro

Note that if you put the new PROM on the adapter backwards, you will fry it (LFMF)

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