Thread: CIS Horsepower
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RarlyL8 RarlyL8 is offline
Crotchety Old Bastard
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Join Date: Jan 2000
Location: Huntsville, AL
Posts: 13,563
CIS has nothing to do with spark. EFI also should have nothing to do with spark if you wish to accurately compare. Often this is the case when arguing the merrits of EFI. If you take spark out of the equasion the functional gap between CIS and EFI is reduced. That fact tells you how important timing control is to driveability.

CIS is a component system so you can change or mod the components to support just about any horsepower level desired. If the posted question is "how much HP can the stock configuration CIS support" then the above figure of ~450whp is the answer. 400whp is common, that last 50 takes a lot of work.
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 11-20-2009, 09:48 AM
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