As many of you know, ProMAX Motorsport have been supplying performance chips (EPROMS) for many of the older Porsche models for some time (since 2004) and have solutions for most Porsche models that use the older Bosch Motronic ECU with a removable and programmable EPROM (chip).
We recently supplied a chip to a customer who planned to install into his 944S2. Unfortunately, after installation of the chip, the car would not start. After a quick call to tech support, it was diagnosed that the ProMAX chip was being installed into a scrambler board that was installed with a different manufacturers performance chip. Some of the earlier chips (from other manufacturers) used a small board that had to be installed first – unless this small board is removed first, putting the original or ProMAX chip directly into the board will result in a non starting car. The easy solution is just to remove the small scrambler board and ensure the ProMAX chip is installed directly into the correct EPROM socket.
Even if your car has an earlier performance chip, you may find that the performance and economy that you can achieve with a ProMAX chip will still result in a noticeable benefit – if you are unsure, there is still the 100% money back guarantee to fall back on. ProMAX Performance chips are available for 924S, 944 8v, 944 8v 2.7, 944S, 944S2, 944 Turbo, 968, 928 GT/S4 & GTS and 964. Andrew S