GIAC Software

We are proud of our 24 year relationship with GIAC and firmly believe they offer the best performance-enhancing software upgrades in the industry.

Power and drivability improvements must be done without putting the engine at risk and nobody does this better than GIAC. Our customers are a testament to these principles of “Do No Harm” while improving power, torque, and throttle response in the most useful RPM ranges. Software is custom-tailored to each car, based on local fuel octanes and any engine modifications.

Rennsport Systems offers GIAC performance chips & software (flash) for all Porsches built from 1995-onward (993 through 991.2). Performance enhancing software requires the use of 91 octane (pump) or better. We also make custom chips for race gas applications as well. Please call 503.244.0990 for specific application details.

993 & 993 Twin-Turbo Software

Naturally aspirated cars typically see 12HP-15HP/TQ gains depending on fuel & engine condition. Look to see if your ECU is listed here. Euro (ROW) ECU’s can also be done, but call for additional information. 

’95: 0.261.203.163, 0.261.203.674, 0.261.203.675 (’95); $500 (these are socketed)

’97 & ’98: 0.261.204.376 and 0.261.204.649 (’97-’98); $1200 This is an in-house flash since these chips are soldered in. (Immobilizer can be disabled if requested). ’96 cars are not re-programmable and must use a ’97 ECU.

’97 Twin-Turbo: 0.261.204.377; $2500. 440HP, 480HP or 520 HP, depending on turbochargers and fuel. ’96 Turbo cars are not re-programmable and must use a ’97 ECU. Additional front oil coolers are strongly recommended.

996 3.4/3.6 Software

12-HP to 15HP/TQ gains depending on fuel with improved throttle response

0.261.204.790, 0.261.204.579; $995 This is an in-house flash

996 Twin-Turbo Software

Stock K16 turbos; 50HP-95HP/70TQ-90TQ gains, $1400 (basic) to $2250 (stock-street-race switching suite). In-house flash

X50 K24 turbos; 100HP-140HP/100TQ-140TQ gains, 1800 (basic) to $2450 (stock-street-race-valet switching suite). In-house flash that gains 30HP-40HP over normal K24 car.

997.1 and 997.2 3.6/3.8 Software

11HP to 14HP/TQ gains depending on fuel with improved throttle response

$1000 to $1500 (DFI), In-house flash

997 GT3 and GT3RS Software

8HP-10HP/TQ gains depending on fuel with improved throttle response

$1800, In-house flash

997.1 Twin-Turbo Software

Stock turbos; 40HP-70HP/TQ gains depending on fuel with improved throttle response, $2200 (basic) to $2550 (stock-race-valet switching suite) In-house flash

997.2 Twin-Turbo Software

Stock turbos; 75HP-90HP/80-100TQ gains depending on fuel with improved throttle response, $2200 (basic) to $3000 (stock-race-valet switching suite) In-house flash

991.1 Software (2012-2016)

12HP-15HP/12 lbs-ft TQ gains depending on fuel with improved throttle response

$1500 in-house flash

991.2  3.0 Turbo Software (2013-2019)

70HP/100 lbs-ft TQ gains depending on fuel with improved throttle response. Switching software available for more performance.

$1600 in-house flash

991.1 Twin-Turbo Software (2013-2015)

Stock turbos; 90HP-110HP/TQ gains depending on fuel with improved throttle response, $2500 (stock-race-valet switching suite)

992 3.0 Turbo Software (2019-present)

65HP/100 lbs-ft TQ gains depending on fuel with improved throttle response. Switching software available for more performance.

$1600 in-house flash