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RarlyL8 RarlyL8 is offline
Crotchety Old Bastard
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Join Date: Jan 2000
Location: Huntsville, AL
Posts: 13,527
Sense I am playing Devil's advocate I'll add this:

Nither CIS or EFI have anything to do with the ignition system.

They are fuel delivery systems. If we want to include ignition then we should use the term "engine management system". You can run an ignition management system with CIS. It has been done by a few folks here on Pelican.

There are stand alone EFI systems on the market such as MegaSquirt that are not too terribly expensive. You still have the set up and tuning to contend with. These type systems can add ignition control later which may be a nice option for some folks considering EFI or engine management.

Speaking of ignition control, any good backyard mechanic old enough to remember the horse power crisis of the mid 70's knows how to modify the advance curve on a distributor. If you want to compare engine management systems to CIS then distributor modification needs to be mensioned as well.

All that being said, for a fraction of the time needed to set up an engine management system you can tune your CIS and modify the curve on your dizzy. The results are astounding when compared to stock. Both of those systems have to be addressed if you are to compare CIS to electronic engine management.
RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds
'78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar
Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8
Old 07-18-2007, 06:55 AM
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