rberry951

Over the past few months several people have asked for a chip for a completely stock 951. These people may be in racing classes that don't allow other modifications, or simply want more performance without making any other modifications.

I decided to make a chip especially for you. The 951MAX DME I, or 951MAX Booster. This chip will provide better overall performance without any other upgrades. It will retain all factory safety features including overboost protection. Instead of the usual 7K rev limit, this chip will have the rev limit raised 300 rpm to 6780. Overboost protection will also be raised only slightly to allow higher performance.

This chip will be perfectly safe on any un-modified 951 running 89 Octane fuel or higher. Retail price for the Booster will be 199.00 USD, with a 30 Day Rennlist promotion at $149.00 USD.

Most of you top gear boost heads won't be interested in this, but people keep asking me about it, so I will provide it for them. If you want the best performance you can get out of a totally stock 951 without changing anything else, this is your chip. This is the DME chip only, you retain the stock KLR.


Regards,
Russell

rberry951

UPDATE:

Local fellow Van Svenson took the Booster chip to the dyno today. The dyno fellow had him use the Romar method, run through the gears shifting low and running to 6500. He's going to send me the charts tomorrow but they only show 5100-6500RPM, not much use other than it shows peak HP/TQ of the stock chip vs. the Booster chip. Completely stock Turbo S, no boost controller, nothing to change but the DME chip. Raw numbers are:

Stock chip= max at about 5,100 - RPM 252 HP/258 ft-lbs
Max chip= max at about 5,100 - RPM 263 HP/270ft-lbs

I'll post the chart tomorrow, but again, it only shows peaks, no real useful info. Oh well...

billthe3

Sweet.

jgporsche

lol, you always get screwed w/ the dyno charts.

boston951

Interesting concept. Any difference in chips for the turbo vs. the turbo s?

rberry951

Here's the charts as promised, nice constant power, I'm pleased with these.

rberry951

A bit, not a lot. The base stock chips have differences in the code and variables, but the actual fuel/ignition mappings aren't all that different. The Turbo S pushes more air so it needs a different fuel curve to provide for the extra air and the timing curve is tweaked differently for the spool characteristics of the slightly bigger turbo on the S.

Regards,
Russell

Van

I forgot to tell you, Russell, I have a fuel pressure gauge on the fuel rail, which, of course, I can never see while driving, but the dyno tech watched it for me and said it stayed right arounf 45 PSI under full acceleration. That's with the stock injectors and stock fuel pressure regulator.

I'll also post my impressions after I go to the track next weekend!

For the rest of the turbo S people here, this seems like a great product. A noticeable gain on the dyno with perfect idle/drivability characteristcs!

rberry951

Thanks Van! That's right about where it should read for a stock FPR, the 951MAX DME III chips are mapped for a 3.0 bar FPR to deliver enough fuel for higher boost settings. I wanted to make these to behave like stock chips, only better, with completely stock configuration. Your car is the perfect example of the intended market for these. I'm anxious to see you lap the field three times this weekend! Actually I hope the weather gets better, we have freezing rain/slush every where today, what's it like down your way?

Regards,
Russell

Van

The ground was whiteish this morning, but it's turned to all rain. I'll be at the track next weekend -- the 21st... I'm hoping it'll warm up by then!