rberry951

Over the past couple of weeks I've been toying with the idea of a gas mileage chip. This would be geared toward people who drive their cars daily, but don't modify them for performance. The basic premis is you will indeed sacrifice a little bit of timing, but I can tune the chip to run 87 octane fuel, and get better mileage on it. Since 87 is 20-50 cents per gallon cheaper, you are assured a 30-35% overall fuel cost savings. This could also be coupled with the new Multi-board to have multiple maps, stock map for your performance and emission days, gas mileage map for round town driving, and/or any variation of the two elsewhere since you can have up to eithe maps.

Just trying to find out if anyone is interested in this, if so, I will build it, if not, I won't. It's up to you guys...

Regards,
Russell

useth4z

Might be reasonable if you use your 944 as a DD, but mine isn't.

MyBlackCar

It would be ideal if you can allow the driver to flip it on or off like BMW's system for their new M3.

rberry951

I'm currently building my new product, which will allow this. It's called the Multi-board, here's a crude cell phone pic of one. The DIP switch on it allows you to switch between 8 different maps, and I can either mount the switch on the board as in the picture, or bring it outside the computer for easier access to make changes.

Regards,
Russell

MAGK944

IMO this would be a good addition to the long awaited 944na chip

Mike

PorscheDude1

Why not wire in a dash mountable 3 way switch with just 3 maps?

Did you ever finish performance maps for the 968?

rberry951

My initial motivation behind designing this was the fact that the old 2732/2764 (24 pin/28 pin) chips are becoming very difficult to find. So I decided to make an adapter to use a newer, more readily available chip. To do this I have to trick the computer into only reading specific address space of the chip. The chip is a 27512 which is 8 times the memory of the 2764. In this type of circuit it is best to use a DIP style switch as opposed to a rotary, and it is important to keep the switch as close as possible to the board so it cannot pick up interference.

To make the multi-image chip I have written a map stacker program which would allow other vendors to use this product as well. So if you want to run multiple images from another vendor, I will sell the board by itself, and you can direct have your vendor download it and make you a chip to work on the multiboard. I'll gladly share the software freely to anyone.

This is not an emulator like the maxtronic, it's simply a chip adapted to our computers that allows you to have up to 8 different tunes. You could have stock, performance, economy, valet, how ever you want to set it up. There will be many ordering options and the cost of the board adds 40 to standard chip pricing across my site.

And unfortunately no, I have not been able to get my hands on any 968s to work with yet. Since I've finished the 3.2L 911 products, I'm thinking of selling the 911 and picking up a 968 so I can get those done. But I'm not ready to do that just yet because I'm working on a low boost turbo kit for the 3.2L 911s.

So much to do.... Now that I'm living in MA and my son is in NY I spend a lot of time traveling back and forth, life gets pretty hectic sometimes, there's just never enough time it seems... But don't worry, I'm still grinding away at it....

Regards,
Russell

bearone

i've run 87 with stock chips and have had no issues for 2 1/2 years with good starting, reasonable mileage, k276 if i want/need to get my foot in it.

the 951 was the dd until the recent addition of the mb sl320.

there's been a lot of discussion here of no need to run the higher octane and many don't.

87951
95 sl320 dd

rberry951

You can indeed run 87 on stock chips, I've never run less than 89. Regardless of which octane you use, the chip would still improve your overall gas mileage as I can manipulate the fuel and timing maps. While the performance of the car would be slightly reduced, the gas mileage would be greatly increased.

Regards,
Russell

harrisonrick

If Russell says he can do it...believe him.

My 2 cents from a happy chip customer.

Calmchaos

I would LOVE a chip with improved mileage.

moorepower

I wouldn't buy a chip just for fuel economy, but I think having that option in a menu of 8 different maps available at the flip of a switch is great. If I could get that for an extra $40 over a standard chip, I'd be all over it.

As an added bonus, it gives me a good excuse to tell the wife. "Honey, I need to buy a chip to get better mileage. Just think of the money we'll save!"

By the way, what's the status of the late 944na chip (specifically the '88 924S). I haven't been to the website lately.

xsboost90

did you get my email? Happy customer here- Dan.

white924s

so is the 944 n/a / 924S chip out yet?

and could this "mileage" map be part of a maxtronic or maxtune package?

I'm definitely interested in maxtronic/maxtune (whatever the combo that's needed for image switching and custom tuning functionality)

Reimu

Having this in the n/a chip (someday...) Would definetly make me bite the bullet and get one as soon as they come out. Having a tune for autox days and DD days on the same chip would be great.