Thread: MFI vs CIS
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Flieger Flieger is offline
Max Sluiter
 
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Join Date: Mar 2006
Location: So Cal
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My BMW is pretty dirty. It just squeaks by 1983 emissions but I am not allowed to improve the fuel injection by California law. I wouldn't say CIS is doing it any favors.

That is why I was talking about the speed of the cars. If you drive a car hard you will use more energy and so more fuel. CIS cars are tuned pretty anemic, so they can't go so fast (accelerate as hard). I venture that since MFI has much more precise fuel control as far as pulsed injection that MFI has lower brake specific fuel consumption.

I think the oil and stuff old cars burns is probably more polluting than the part of the exhaust that is actually combustion products.
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1971 911S, 2.7RS spec MFI engine, suspension mods, lightened
Suspension by Rebel Racing, Serviced by TLG Auto, Brakes by PMB Performance
Old 10-07-2011, 04:18 PM
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