Fuel/Ignition Modules - Use of Aftermarket Microchips

90porsche06 October 9, 1990
Subject: DME Aftermarket Microchips
Model Group

All 2

Part Identifier Number

2470 9008
ATTENTION: Service Manager/Service Technician

Models Affected: ALL

Concern: Use of non-approved microchips in fuel and/or ignition control units (DME, LH, EZK, KLR units).
General Information: The microchips Porsche uses for fuel and ignition control are optimized for performance, engine longevity, fuel economy and driveability while meeting emission requirements.

Caution: Aftermarket microchips are not recommended by Porsche. They have not been tested or approved and may result in driveability problems (poor cold starting, hesitation, surge, etc.), excessive emissions and possible engine damage.

Should these or similar problems be found in vehicles using aftermarket microchips, warranty assistance will be denied.

Note: Any dealer installing these non-approved microchips may be liable for fines levied by the Federal Govemment in the amount of $10,000 per vehicle.