i agree with the "welding" of the TB plate to the plenum housing, possibly causing an issue, however, a tapered flange would require a lot of material, and drastically enlarge the face of the plenum.

in the case of mine, weather good or bad, because i have just welded a flanged onto the plenum, if had OFFSET the openeing so that the 65mm opening did not interfere with any of the intake ports. there for "hopefully" not generating any bad turbulance.


also, the tid on removing the injector votex bungs, good info, i talked to several dyno and engine build shops about this issue and all highly adviced me to leave them, however never gave me details such as "better for low rpm" ect. do you have any kinda of article proving or disproving either theory.