Fuel And Ignition Systems

Regulated, three-way catalytic converters are standard in Porsche cars beginning with 1990 models. Cars can be ordered with M 150 equipment for delivery with a primary muffler instead of a catalytic converter for countries, in which catalytic converters are not mandatory. 928 GT and 928 S4 have the same final muffler and twin tailpipe for standardization of parts in 1990 models. Both engine versions, 928 S4 and 928 GT, have the same intake system beginning with 1990 models. Air Intake Hose...

Gt

're chain may be mounted only on the rear wheels. ateerarice for tire chains only with 205 55 Rl6TorHM S tires. irn thick spacers for a wider rear track are omitted in 1990 models. t-s s partial compensation for the narrower track width by the changed offset of the 9 inch rims -asr track width of 1989 model 928 GT 1,565 mm asr track width of 1990 model 928 GT 1,546 mm .r s distributed to the windshield through a ingle-piece defroster mask, which is inserted r she dashboard. 2 s now have a clock...

Info

In order to be able to use identical steering column switches in cars with or without an airbag system, a standard steering column switch was developed for both versions. A separate plug-in type two-tone horn contact is inserted in opening 1 for cars without the airbag system Rest of World . This two-tone horn contact is omitted in cars with the airbag system. Contact is made via the airbag contact unit. Airbag contact unit is mounted with self-tapping screws in holes 2 with the front wheels...