Performance Software

Rennsport Systems offers GIAC performance chips for 911-based Porsches built from 1989-onward.

Performance enhancing software requires the use of 91 octane (pump) or better. We also make custom race-gas chips for applications that allow the maximum HP available from software.

We can re-program: all 964, most naturally-aspirated 993, all 996’s, all 997’s, 993 Twin-Turbo, 996 Twin-Turbo & GT-2, 997 Twin-Turbo & GT-2, GT-3, Boxsters, and Caymans. Please read below to see what others are available. Listed are US and non-US models that we support.

The ’96-’98 OBDII 993′s are soldered in and the DME must be be sent to Rennsport Systems to have the new software installed.

996, 997, GT-3, Boxster, Cayman and all Twin-Turbo ECU’s are flashed. The ECU can be sent here or the car can be driven to Rennsport Systems for this to be done .

911 Carrera & 964 C2/C4 ’84-94 $400-

Chips programmed to European spec, CUP level, RS, and beyond.

Here are just a few of the DME’s that are supported:

0.261.200.078
0.261.200.082
0.261.200.450
0.261.299.473
0.261.200.474
0.261.200.483
0.261.203.070
0.261.203.163
0.261.204.674
0.261.203.677
0.261.203.679
0.261.204.376

993

’97-’98 993 OBD-II, 12-18 HP program depending on fuel; $995

0.261.204.376
0.261.204.649

’95 993 OBD-I, 12-15 HP program depending on fuel; $450 (socketed)

0.261.203.163
0.261.203.674
0.261.203.675

1996 993′s must use a ’97 DME to allow re-programming. The 96′ ones are not chippable if your DME is:0.261.204.008 or 0.261.204.358

0.261.204.790 flash chip $1195
0.261.204.605 flash chip $ 995

European RS 993 model DME (300HP std)

12-18+ HP program depending (’96-98)-

0.261.204.191 $1000
0.261.204.190 $1000

We can also update US programming to real European RS specs (the cars we did not get over here) or beyond. We leave the stock rev limiter alone given the weakness in the OEM rod bolts. If you install ARP rod bolts or aftermarket rods such as Pauter or Carrillo rods, the rev limiter can be raised commensurate with the other modifcations. Full race versions and race-gas-only versions are available.

Mark in San Francisco said, ” Easier starting, better idle, more smoother power and the car shifts better on WOT upshifts. AND, improved throttle response while shifting. All around, a 5 thumbs up!. The car is a lot more fun to drive”.

993 Twin-Turbo OBD-II:

Choose from Turbo S-package 430 HP, GT-2 480 HP, or 520 HP. These are 100% software controlled

0.261.204.377 flash $2500

Note – an additional front oil cooler must be installed with any performance software to maintain engine performance and longevity.

These DME’s are specific to your car since the anti-theft immobilser is programmed into the Motronic Brain except for the 996 cars.

996

DME 12-15 HP (’99.5-2001 Drive-by-wire ME7.x)

997 Twin Turbo:

Choose from 480 HP, 550 HP, 580 HP, and over 600 HP packages. 500+ HP need either K24/K-16 Hybrid or K-24 turbochargers and exhaust changes are necessary realize the upper power levels. Power levels over 600 HP require uprated connecting rods ,bearings and some oiling modifications for reliability.

Boxster & Boxster S DME

12-15+ HP program depending (all models) with a new 7300 RPM rev limiter-

0.261.204.605 flash chip $ 995- 1195
0.261.204.010 flash chip $ 995- 1195

Special programs:

0.261.200.473 911 C2 chip for Mass air/Throttle body conversion kits. Silky smooth idle (common problem on these kits is a cycling lumpy idle), no more check engine lights.

To access the DME, and remove it for shipment:

964/993: In the car under the driver’s seat, you will find the DME held in by shear bolts. You must remove the seat and drill the soft shear bolts to remove the DME.

996-997: The DME is found under the carpet behind the right-ride passenger backrest. The picture will show the bolt holes where the DME was attached.

Boxster Location Language

How to remove your DME

Turn the ignition off and remove the key.
Unplug the multi-connector from the DME and take it out.
Send it via insured FedEx (only FedEx) to us.
We will send it back within 72 hours, via FedEx Priority.

Warranty Questions & Issues

One of the most frequent subjects that is brought up when talking about chipping a car are warranty concerns. Many people wish to know if installing a chip will void or affect the warranty. This is a very legitimate question and the last word on this will decided by the Manufacturer and Dealer.

Now,…….you have very specific rights granted by Federal Antitrust laws and the Magnuson-Moss Warranty Act that you must be aware of to keep from being “stonewalled” by a Dealer or Manufacturer.

Under Federal Antitrust Laws, the use of parts or accessories that were not purchased from and installed by the Dealer do not affect the vehicle’s warranty. Manufacturer’s and their authorized representatives, may not condition a warranty on the use of their own parts or service, unless the parts or service are provided free of charge. Also, they may not refuse to honor a warranty unless they can show that an aftermarket part or accessory is the cause of a particular malfunction otherwise covered by the warranty.

In other words, warranty coverage cannot be denied simply because such parts are present on the vehicle or have been used. The warranty coverage can be denied only if the aftermarket parts caused the malfunction or damage for which warranty coverage is sought. Normally, these issues boil down to facts and technical opinions, rather than interpretations of the law.

Any denials of warranty should be gotten in writing from the Dealer. The Dealer must describe both the failure and how they believe the aftermarket part is responsible.

SEMA’s website has some useful information about this that can be found at http://www.sema.org/warranty/