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WERK I WERK I is offline
Forced Induction Junkie
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Join Date: Jan 2003
Location: Wisconsin
Posts: 3,305
Re: Stock ignition and fuel injection matched to K27 and SC cams?

Originally posted by Tom F2
My question is whether I should expect the stock ignition and fuel injection to work with the modified cams and turbocharger. In other words, does the ignition distributor need to be recurved to go with the modifications, or does the fuel injection need some adaptation?
In a word; yes.
The CIS is a mechanical system and will adjust to changes in increased air flow through the metering plate. The important thing is to baseline your CIS system. First with cold and warm control fuel pressures and system pressure. Then get a baseline of your fuel mixture at operating temperature. If you are lean, your can adjust your idle fuel mixture. This will effect the whole fuel mixture curve the engine runs under.
'85 930 Factory Special Wishes Flachbau
Werk I Zuffenhausen 3.3l/330BHP Engine with Sonderwunsch Cams, FabSpeed Headers, Kokeln IC, Twin Plugged Electromotive Crankfire, Tial Wastegate(0.8 Bar), K27 Hybrid Turbo, Ruf Twin-tip Muffler, Fikse FM-5's 8&10x17, 8:41 R&P
Old 11-23-2006, 06:59 AM
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