First of all, I hear alot about the CIS system, but even after a search, I'm in the dark about the details other than the European CIS was better than the USA version. CIS means Continuous injection system? How can you identify which fuel system your Porsche has?
Did the Euro CIS cars have any difference in the head intake ports as well?
What upgrades can be performed from the stock Porsche CIS systems? What kind of HP gains can be made and at what cost? .... or is the CIS a pretty robust system and should be left alone?
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82 Porsche 930 Euro, black, 31K miles.
Factory stock other than k27 turbo, B&B headers, GHL exhaust, Tial F40, 1 bar wastegate, MSD 6A ignition, 8" and 9" Fuch upgrade, H4 Xenon headlamps and a 930S steering wheel.
