Joe
Joe;
I put the diffusers in on the primary
injectors. On the secondary that are out in my TWM throttle body I think
it not an issue. They are roughly a foot from the port, and upstream of
the butterfly, so there is plenty of distance and turbulence for the fuel to
vaporize. In the primary port it is not likely going to make a noticable
difference in warm weather when the engine is warmed up; but certainly when
cold, the diffusers will deflect the spray, and add turbulence in the air stream
to better diffuse and vaporize the fuel. Better that than having is on the
surfaces of the port and rotor face.
Anyway; that’s my take.
Al