ldl311

I bought my '89 964 almost a year ago with about 80k miles on it. It has a sticker "A.P.E. chip equipped". Runs great, and I am pleased with the performance, but I would like to know more about the chip. Does anyone have a clue?

JasonAndreas

Autothority Performance Engineering

ldl311

Thanks, found their website, and will contact them for specifics.

Does anyone have an opinion about, or experience with their chips? I like the performance, but am having some idle issues. The issues may well be caused by something else, but I thought I'd start by understanding more about the chip.

frankvan

I've tried to contact them a couple of times and got nothing in response. If you hear back from them post the results! I have their chip too, but have always had it so can't compare to stock chip.

ldl311

Initial results: not very helpful.

I haven't given up, I'll keep you posted.

TR6

For what its worth, when I bought my car, it came with an Autothority chip that was NOT installed, but included in some spares with the car. I tried to get some info from Autothority on the chip and got no response either. I still haven't installed the chip and don't know if I will, because I'm not comfortable not knowing what the rev limiter is set to on an unknown chip.

JasonAndreas

Do you know the Autothority part number for your chip? I have several here that I can check or I can read out yours for you.

frankvan

Jason,

This is what is printed on my chip:

AutoThority Perf Eng
964.020.100.30 c1990
S/N 2629 CARB EO#D-228

My Motronic DME unit is labelled:

0/261/200/182
911.618.124.02
Typ 911 MW-DZ-01

Twood

To say I was disappointed with the lack of service from Autothority would be an understatement.
Anyone that is interested in how bad their service is PM me and I will bore you with the details.
In case anyone is wondering I can not recommend this comapny or their products in any form.

JasonAndreas

frankvan,
I just checked and the 3 versions that I have are 964.020.100.20, 964.020.100.27 and 964.020.100.28.

JasonAndreas

Timing at WOT

RED is the Stock ECU
Cyan is Andial
Lavender is ProMax
Blue is Autothority
Green is eBay Cup/Autothority

frankvan

Once again Jason you have impressed!

So the green ebay chip goes quite ways above stock redline - is that safe? It does seem to follow the other autothority chip fairly closely. (which version - .20 .27 or .28?)
With the extra advance of the aftermarket chips do you know if there is fuel enrichment as well?

Frank

JasonAndreas

The maps for the ebay cup (it's actually a beta version of an Autothority chip) go above the stock red line but the rev-limiter is unchanged from 6640RPM. For a recent discussion click HERE.

The eBay chip is the Autothority version .27

Yes, the fuel trim levels have been changed. They won't really tell you anything but I guess I could post them anyway. Although it might be better to just wait for Geoffrey's dyno shootout?

ldl311

Well, thanks for the information guys.

I haven't been able to get anything out of APE, as they seem really paranoid about someone counterfeiting their chip.

The timing at WOT helps alot Jason. Thanks again.

LD

Lorenfb

"Timing at WOT"

The part throttle should be posted as it indicates much greater "pushing" of the timing over stock,
i.e. in some cases the difference is twice that indicated on the graph.

Bottom line: Hardly any real creativity (discoveries) in tuning, which have
been known from day-one, i.e. advance the timing for that performance feel.