964Clifton

I was wondering what DME chips - brand name/cost , others have used and how much improvement have they had overall.

garrett376

I can't help you with what aftermarket chips are best, but in reading a lot of posts about this, it is interesting how many people go back to the stock chip for the best overall driveability after trying "blanket" aftermarket chips (off the shelf type).

I am not sure if that helps - but surveying the posts on this forum, for the most part it seems that the best DME chip is the stock one, unless you are going to do a "custom" reprogram of the DME to match your exact engine setup. The "blanket" chips can't get you what a "custom" one can do.

Now, that is a summary of other people's findings... not my own!!! But maybe helps... somehow?

964Clifton

thanks replying - Just curious how many have done it and have stuck with it and wondering if there are any benefits as a daily driver.

warmfuzzies

I would suggest it's the one that's tuned to your car.........generics are ok..ish, but if it's a tailored item, much better......
Off the peg or made to measure, I guess in the end it's personnal choice.

kevin

craig001

I have an Automotion Chip that I haven't installed yet. Waiting for my Wet Okole Seat Covers to get here from getting repaneled. That way I aonly have to pull the seats once.

I went with the Automotion chip because it supposedly keeps the rev limter. I've heard that is a "soft" limiter.

ltc

An OEM Porsche Carrera Cup chip would probably be a safe choice.

Scooter92

Replaced my Autoauthority with Steve Weiner's chip from Rennsport. Autoauthority was pinging way too much. I was told that it was designed to run on 93+ octane, which of course is not readily available in my area. I am happy with Steve's chip, and he stands behind his product 100%.

Bill Gregory

The best chip is one that is 'tuned' while your particular 964 is on a dynometer. There are a number of people around the US and UK (assume other country's as well) who can do that. Off the shelf chips have not had overwhelming results, as you'll see if you do a search.

BaysideC4

I have been happy with my RUF chip, no problems to report and the car is amazing!

Cupcar

I don't think there is much to be gained unless you have 93 octane gas in your area.

Here in California, our lousy 91 octane gas does not foster exploitation of the advance curve for more power.

The stock C2 chip is tuned for 90 octane and the factory RS/Cup chip is tuned for 93 octane and delivers 10 more DIN HP.

JJJMCD

My c2 cab's engine is stock, other than a primary muffler bypass and EVO cone filter. I tried a GIAC chip and the throttle response improvement was fantastic, but it wouldn't stop pinging under load, even with Sunoco 93 gas. I went back to the stock chip but am thinking about a "custom" programmed chip.

JackOlsen

I have a 1993 964 motor, and I run a No Bad Days chip in it, which has the unique characteristic of having two complete sets of data burned onto a single, dual-capacity chip. There's a switch on my DME box that allows me to go with either the stock mapping (safer for the engine, with 91 octane gas, for day-to-day driving) or the more aggressive settings (more power for when I need it, and can mix in race gas) whenever I want. Dyno results here.

Cupcar

I posted this before, here is chassis dyno run of my Cup engine with Cup chip and open airbox, Cup primary muffler, 100 octane gas.

Lorenfb

"I don't think there is much to be gained unless you have 93 octane gas in your area."

- Cupcar -

He's right on!

Check out this web site ( www.andial.com ) on the FAQ page, Question #2. This
is very insightful and applicable to the 964/993 engines with knock sensors.

Also check out this web site ( www.systemsc.com/tests.htm ) to obtain insights
into how much some "tuners" push the advance curve to get the performance
"feel" to help sell chips. Although the tests were done with Porsche 3.2 performance chips,
the basic timing mods are usually all the same no matter what engine type,
e.g. Porsche, BMW, VW, Honda, & etc.