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FAQ

Do you have a particular question that is not answered here? If so, please contact the team at Hirsch Performance by online form or e-mail.

  • Is the new vehicle warranty still valid after a conversion by Hirsch Performance?
  • Does a performance-enhanced car use more fuel?
  • What type of petrol is needed after performance upgrade?
  • What is an IPRO?
  • Vehicles converted to LPG, CNG or E85 in combination with Hirsch Performance upgrades
  • E10 fuel and Hirsch Performance upgrades
  • Can a performance upgrade be transferred from one vehicle to another?
  • Where can I buy Hirsch Performance products?
  • What do I do if the Hirsch Performance engine software is accidentally deleted?
  • What kind of tyres do I need for my performance car?

Is the new vehicle warranty still valid after a performance upgrade by Hirsch Performance?
Yes. If the upgrade was installed by an authorised Saab dealer and, in countries where required, the change has been entered in the vehicle documents, the Saab new vehicle warranty remains fully in force.

 

Does a Hirsch Performance engine upgrade increase the fuel consumption?
The fuel consumption is highly dependent on the driving style. Average consumption in normal daily use for a performance upgraded gasoline engine is reduced by 0.5 to 1.0 litres per 100 km. Average consumption in normal daily use for a performance upgraded diesel engine is increased by 0.5 to 1.0 litres per 100 km.

Overview performance upgrades

 

What type of petrol is needed after a performance upgrade?
Petrol and BioPower vehicles with performance upgrades from Hirsch Performance have been designed to benefit from petrol rated at 98 ROZ or E85 rated at 104ROZ. They will, however run fine without any risk of engine damage on petrol rated at least at 91ROZ, thanks to the knock-detection and fuel adaptation technology in the vehicles’ ECU’s. However, especially in hot and high-altitude environments, the performance will be automatically reduced if the octane rating of the fuel used is insufficient. Besides performance, the fuel consumption will also increase slightly with lower octane fuel, due to the lower efficiency of the combustion. Hirsch Performance therefore recommends running performance upgraded cars with 98ROZ petrol, or 104ROZ E85 for BioPower cars, to achieve maximum performance and fuel efficiency. For diesel vehicles, the efficiency of the combustion is not primarily limited by the fuel’s cetane rating but by other design factors, and there are therefore no significant performance advantages with higher-rated diesel.

 

What is an IPRO device?
IPRO is a special programming and diagnostic device. It enables our dealers to program the Saab control equipment within two hours. In addition, in the event of technical problems it can be used to request a diagnosis from Hirsch Performance.

 

Vehicles converted to LPG, CNG or E85 in combination with Hirsch Performance upgrades
The performance upgrades from Hirsch Performance are not compatible with any vehicles converted to run on LPG, CNG or E85. Using a Hirsch Performance upgrade with an LPG, CNG or E85 conversion will void the Saab Original warranty, and no technical support will be offered.

 

E10 fuel and Hirsch Performance upgrades
All recent Saab cars are compatible with E10 fuel, and this is generally valid for all Hirsch Performance upgrades as well. However, for the 300hp and 305hp upgrades for the Saab 9-5 2.3T Aero, it is recommended to use fuel with 5% or less ethanol.

 

Can a performance upgrade be transferred from one vehicle to another?
No, The performance upgrade is specifically for one chassis number (VIN).

 

Where can I buy Hirsch Performance products?
Basically every Saab dealer has access to our products. However, local regulations may mean that certain products are not licensed for fitting in a particular country. You can find out which products are available in your market by consulting the Product Catalogue. You can find a list of addresses for dealers in your country in the Dealer Finder.

 

What do I do if the Hirsch Performance engine software is accidentally deleted?
Using the chassis number it is possible to determine which performance upgrades has been carried out on a particular vehicle. The software can then be reinstalled free of charge using an IPRO device.

 

What kind of tyres do I need for my performance car?
For maximum safety at high speeds, Saab vehicles have electronic top speed limiters that ensure that the tyres do not risk to become damaged due to overspeeding. The top speed is also limited by a second speed limiter which is set to match the maximum speed index on the currently installed tyres. Therefore, for cars with performance upgrades installed, it may for certain models be necessary to install tyres with a higher speed index. To benefit from the increased top speed, it is necessary to program the vehicle for the new tyre type using the Tech2. Tyres rated H will limit the top speed to about 205km/h (indicated on the speedometer), and tyres rated V will limit to about 230km/h. The W-rated tyres standard on most Saab models theoretically limit at 260km/h, and with such tyres, the engine’s top speed limiter will regulate the top speed.

 

 
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