Quote:
Originally Posted by McLovin
If you want an easy to tune car that gets great mileage and no hassles . . . get a Honda.
If you want an early 911 in its full glory . . . get MFI.
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Spoken like a guy who has never had his MFI pump fail and had to fork out more than $1300 to get it rebuilt, or a guy who has never had a cold start mechanism malfunction and spent lots of time and money trying to fix it. Porsche went with the CIS over the MFI because it was a better fuel delivery system and Porsche used the CIS on all of its 911's and turbos until 1984 - long after the Bosch MFI proved inferior and inefficient.
I like the MFI for its throttle response at higher rpm's, but the CIS for drivability is better.
With CIS, you didn't need to buy a Honda to get a good sporty 911 that offered 911 performance, good mileage and was hassle free. The 2.4T with MFI had a hp rating of 140. The 2.4T CIS was 148. There was no performance sacrifice when Porsche moved to the CIS system. Quite the contrary. The problem with the CIS system was that Porsche couldn't figure out a way to use it with aggressive cams so the inevitable consequence was to increase the displacement and develop a motor with more performance from low end torque rather than higher compression and higher rev's.