To run any of our Tunes, you must have a 28pin DME.

The 951 DME switched EPROM sizes half-way through production. The EPROM is the chip which we can change.

The '86 and '87 years had the "24pin" EPROM, while the '88 and '89 were upgraded to the "28pin" versions.  Both versions have a total of 8kb of data/code.  The difference is this: the 24pin DME has the first half the code on the micro-controller, and half on the EPROM.  In contrast, the 28pin DME has all 8k of the code on the EPROM.

With the 28pin DME, all the data/code is on the EPROM and we are able to change any part of the stock code/data.  However, the 24pin DME we can only access half, as the code/data on the micro-controller is permanent.  This presents a problem for real-MAF conversion; the code changes necessary for True-MAF are on the non-accessible first half.  But thankfully, the 24pin DME can be converted into a 28pin with a little bit of effort.

De-soldering and changing things on the DME can be intimidating.  Heat is the enemy of electronics, and improper soldering / de-soldering can ruin the wire traces on the DME board.

Because we understand that many do not feel comfortable making the necessary modifications, you can send us your DME, we will convert it and send it back to you ready to go.

***This page is not meant to be an explicit walk-through of the 28pin conversion!  The page is here to simply show the conversion service we offer***

 Factory 28pin DME:

Factory 24pin DME:

Converted DME:

Top:

Factory 28pin DME, 8k EPROM.

Middle:

Factory 24pin DME, 4k EPROM.

Bottom two:

Our converted DME - exact same functionality as the factory 28pin DME.