awilson40

I have a 1988 944 turbo and thought it had the 28 pin eprom so when I found a set of Europroducts chips on ebay at a good price, I grabbed them.
Then I Open theDME and guess what...Its a 24 pin DME !!!
the number is 951.618.121.02 TPY 951 MW-01
BOSCH 0 261 200 075

Could this be a lot of my hesitation issues that I have the wrong DME
Is it possible that The factory put some 24 pin DME's in some 88 cars?
The Mfg date on the car is 7/87 so it could be an 88 right at model change over and they used a leftover 24 pin DME.

Anyone want a set of 28 pin chips?

fast951

The 24 vs. 28 PIN DME should not cause any hesitation.

awilson40

Thanks,
I thought it was OK using the older style DME.
BTW, what would be the harm to run the aftermarket KLR chip
with the stock DME chip ? Would it just remove the overboost protection?

Phil Harrison

I think you're getting DME & KLR mixed up.

All 951 DMEs are 28 pin
86-mid 88 KLR are 24 pin
mid 88 & S -89 KLR are 28 pin

fast951

The above information is incorrect!!!

All KLR 1986-1989+ are 24-pin

DME: 1986-1987 24-pin
1988-1989 28-pin

Renn 951

fast951 is correct. Although I've heard of some 88's that have 24 pin DME's I think that's an anomaly. I have an early '88 (July 87 build date) and it has the 28 pin DME (and 24 pin KLR.)

Danno

Don't forget that '88 had 28-pin Turbo and 28-pin TurboS as well. I've had to burn custom chips for some people with TurboS cars that had been retrofitted with a 24-pin DME box (the maps are different). But on a non-S car, either 24- or 28-pin DMEs should function identically.

951and944S

When DMEs were replaced under warranty or at the dealer for that matter they were usually replaced with a remanufactured Bosch unit on an exchange basis. There is no reason to specify 24 or 28 pin e-prom when replacing the entire DME.

I purchased chips for an '87 years ago also expecting the DME to be 24 pin but had a Bosch remanned unit that was previously installed by the dealer.
I simply used the chips I bought and swapped the DME from another car I had. Both ran fine.

IIRC the extra four pins were never put to use anyway but maybe John or Danno can elaborate on that...?

BTW- why don't you just keep the chips and look for someone who'll swap a DME with you....? I should have the one you need....and I'd swap you even if it'd help you out of a jamb....



Terry S.

awilson40

Thanks alot...very generous offer, but, I have it all sorted out.
Another great Rennlister is helping me out. Gotta love this group
of people

951and944S

Contrary to accepted belief "non-members" can be helpful......

Terry S.