Quote:
Originally Posted by mdbound2005
I just wanted to see if you guys thought that if I would be better off with carbureted vs. EFI or whether you think the end result in drivability would be the same
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Carbs pros:
can make a lot of power.
are cheaper. (single carb setup)
they were original equipment in Cobras.
Carbs Cons:
Fuel may boil over when shut off.
Vapor lock.
Choke dump to much fuel on start up, contaminating
oil.
Engine flooding.
Lean condition can backfire flames up the carb.
Cobra acceleration can uncover the jets and stall engine. (common)
Tuning happens at one condition.
They develop leaks.
Fewer and fewer expert tuners are still alive today.
Generally use with a mechanical distributor (vacuum and centrifugal advance)
Many certified mechanics today have never worked on a Carb.
EFI pros:
Controls both fuel and timing (shift points too).
Infinitely tune-able
compensates for temp, altitude, and sensor calibration drift.
Lower emissions
Better fuel mileage.
Consistent perfect fuel on start up (no flooding).
Timing curve can be shaped to fit the engine needs.
Can retard timing and save engine with knock sensors.
Easily handle boost.
Will rev limit the engine.
Uses timing to rapidly respond to idle rpm changes - shifting auto into gear.
Mechanic everywhere understand EFI.
EFI Cons:
Initial cost.
Self tuning is a steep learning curve.
Radical cam engines are difficult to tune
Note not all EFI systems are the same. This is another huge subject.
EFI engines last longer and can go further between
oil changes, because the fuel control is not washing the cylinder walls down with too much fuel on cold starts, as a carb does.