Hello Group After reading from one of Bills links I came across a statement that the 4.0L engine is detuned for the Wrangler
FrankW did pass the time by typing:
Nope, it's bull. My ZJ has the same "restrictor plate" which actually is a venturi used to provide vacuum to the evaporative canister. Without that doodad your canister will cement up and performance will really go down.
Nope, it's still bull, just a different texture.
Measure the diameter of your throttle body bore, then measure the diameter of the ventura in the intake - you'll find that the intake ventura is substantially larger than the throttle body bore. Unless aerodynamics has changed since I last took the course that ventura cannot affect the air flow to the intake manifold. It actually works simply because of the compression/expansion of the stream flow with no effect on the mass flow rate.
Wish I owned patents on snake oil...
Well I won't bother taking it out then. Maybe I'll get one of those throttle body vortex devices that I keep seeing on late night TV instead ;^)
-Bill (remove "botizer" to reply via email)
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