ProMAX Performance Chip - ::PAGE EXPIRED::0000 149.95

964 C2/C4

The ProMAX Performance chips for the 964 Carrera 2 and the 964 Carrera 4 normally aspirated models have been extensively developed to provide not only a power increase, but also improved smoother running. All flat spots and anomalies have been engineered out of the original compromise chip (ECU EPROM). To ensure that emissions are not effected, changes beneath 3,000 rpm are minimal. The timing curve on these chips is substantially smoother than the original with the often pronounced step in the mid-range made more progressive. Power gains at the top end are between 7-15%. Power increases of up to 18% have been recorded on cars fitted with a cone type air filter and free flowing exhaust (with cat bypass). NOTE: For 964 there is no need to check your ECU number (see table below). All 964 ECU types accept the same chip.

::PAGE EXPIRED::0000 149.95

How can performance be so easily improved? Why didn't Porsche build this performance into the car to begin with? There are many reasons for this. Some cars are deliberately kept in a lower state of tune so as not to get too close to the performance of other models (i.e. marketing reasons). Other reasons included ensuring the car could use low octane fuel and survive a few missed services.

If you are prepared to use 98 octane fuel (not essential, but best to get the maximum performance) - you can enjoy the performance that your car is actually capable of. Power gains are anything from 10-25bhp (often more) with torque gains of 14-30lbft. NOTE: All power and torque gains are dependent on your car's current engine condition, modifications and induction system. Power gains can not be guaranteed.

IMPORTANT: Applicable to cars from 1989 model year onwards (964 Carrera 2 and Carrera 4). ProMAX chips deliver even better results with a performance exhaust; induction kit or a recently rebuilt engine [with good compression]). NOTE: All 964 models will accept the same chip - see the table below. Excludes Turbo & RS