If this poster had fully read many posts, especially the last, he would have the simple
answer, "28 pins" - that's the latest version. But like many, didn't read and understand
what's posted and just love to be in the attack mode as most lemmings on this thread
was/are!


That is what I said, open it up..could be a 24pin, 28pin or an early 24pin soldered in chip...depends on what the PO installed without documentation....what is your problem Loren? Be nice..

http://www.redstaplerchronicles.com/...ychologist.jpg

You can hardly blame the guy. Most of this thread aint worth reading!!

"That is what I said, open it up..could be a 24pin, 28pin or an early 24pin soldered in chip"

That's not what was posted:

"Remove and open the DME..take a look. Take some pictures and send to SW. I had the same question with a mystery chip and Steve was very helpful."

"Most of this thread aint worth reading!!"

I totally agree! Since most/all didn't provide any contributions, i.e. just attack.

Loren..be nice

Including you Loren.

28 pins - that's the answer I was looking for. Thanks.

http://forums.pelicanparts.com/uploa...1285774144.jpg

Our old machines can have some surprises. You may find one of these mystery DME chips, OEM or some other chip variant. Never know what the dreaded PO may have done.

If your trying to make me look bad it is a big fail on this post just like it has always been. These threads turned into some very informative threads with the some of the top talent on this board sharing their knowledge with everyone here. Even you actually shared some good info on the distributor thread. It also shows how long you have been doing this crap, no change. Lorens business is to repair DME boxes among other things related. Would never do business with someone that attacks possible customers the way he does. Not if it was the last place to go.. Get to vote with my money. The first ban by Wayne wasn't enough for you?

mmm...let's see?....

.....(try this, Doyle): Is anyone here familiar with the timing (ignition) maps for the DME in the '88/'89? (As well as the pre-'88 DME?). If so, are you willing to share this knowledge?

How about the fuel maps, while we're at it?

I know they idled it higher.....why?

Thanks, in advance, for any information that can be provided....

Best,

Doyle

Interesting dB.......is this presently loaded in yours'? Performance Authority? What do you know about this one's particular programming?

Best,

Doyle

Thanks for the photo. Now I know exactly what I'm looking for. I might have counted all the pins on all the chips otherwise.

I'm a newcomer to Porsche-world, but I have lifelong experience in a technology-driven business. I admit that I am swayed in favor of an updated factory unit vs. an older DME with a new aftermarket chip. The beauty of this forum is that all sides of the story are presented, sometimes... uh... "vigorously." Each of us gets to make our own decision and compare notes. It's a beautiful thing!

Looking "elsewhere", I found this: Performance Chips, What They Really Do! - Rennlist Discussion Forums (a bit dated but still relevant....).

Still looking to hear for the differences programmed for pre-'88 DMEs. If this ends up being "timing advances", we'll have a really good discussion.......

Best,

Doyle

some more from long ago:

Autothority chip vs the Steve Wong chip. - Rennlist Discussion Forums

Doyle

WOW: 3.2 Performance Chip Dyno Results - Rennlist Discussion Forums

Doyle

I didn't really read all these posts, but being that this thread is about my chips, I'll tell you guys that you are truly wasting your time asking anything about tuning or the DME's operation from Loren. There are so many technical errors and assumptions in his posts, you can tell he's never tuned or seen a dyno in his life. You might as well as a blind man in a tittie bar how the ladies are.

Update a early 24 pin unit to 28 pin stock chip for the same change as a real performance chip? What a joke! Someone is trying to sell you a bill of goods. Bring some KY because it's going to be painful when you get bent over! All the units dyno the same power in the real world. It doesn't matter if it's an 84 Carrera with a 24 pin chip or a 89 with 28 pins. If installing a stock 28 pin chip achieved the same results, none of the thousands of 87-89 owners would have chipped their cars. This is how a stock 87-89 28pin chip compares to a true performance rechip, tuned on a Superflow engine dyno, stock 87 motor with nothing by a premuffler:


If you guys are looking for some of differences between all these chips, just go online here. It's been posted for years:

911Chips.com - Motronic Fuel Maps - Porsche 911

another wow: the extra memory space allows for maps of various "geographies"?

DME Differences - Rennlist Discussion Forums

Doyle

Getting closer......: Any differences b/w 3.2 liter 84-86 & 87-89 Carrera - Rennlist Discussion Forums

Thanks,

Doyle

Any differences b/w 3.2 liter 84-86 & 87-89 Carrera - Rennlist Discussion Forums

Yes, Doyle found it. Nice work. It contradicts what was just recently posted.
Yes, there is a difference! Read posts #2/#11. As mentioned before, just
drive a car with the pre-'88/'89 DME ECM and then with the later ECM,
the difference in noticeable.

Bottom line: The reality is that Porsche would not go to the extra cost of adding
a more expense memory device if there weren't resulting benefits - better driveability,
smoother idle, better O2 control, & more responsiveness.

Presently I have the SW 91 octane with a cat/bypass chip..with his euro premuffler.

I could not be happier..fuel economy and the rump dyno results are very good.

My mystery chip..well, I sent it to SW for study, we think it was modeled after the late 3.2 programming and was someones great invention. I never could figure out who made it.:rolleyes:

Steve was very helpful and I appreciate it.

"What do you know about this one's particular programming?"

The programming is here for the more common ones: http://www.systemsc.com/tests.htm
The tables explain everything!