Quote:
Originally Posted by RWebb
CIS is more environmentally friendly than MFI and meets later, more stringent emissions stds. EFI is much better than either in that regard.
CIS is also gives much better fuel economy.
CIS was a significant advance when first introduced by Bosch for the technology extant at the time in terms of fuel mileage.
If (for some reason) you have an old Volvo and want to keep it stock (period correct) then CIS is the way to go.
CIS is not a good choice for a sports car* and I'm told it is more susceptible to EtOH fuel problems than MFI, EFI or carbs.
MFI is a period-correct, concoursmobile correct performance injection system.
Direct injection is top dawg right now, but for the best performance on our old air colled motors, just take a wad of $10,000 bills to Motec and PMO.
* yes, MFI is derived from a diesel tractor system, and yet somehow...
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Define "environmentally friendly". Someone.
I agree electronic, direct fuel injection is best.
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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
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