As the title suggests im curious to know about peoples experiences and/or opinions on a forward feed plenum on the RB25s.
Either a custom made one or a greddy one or an RB26 one adapted to suit.
Are all 3 essentially the same and do the hinder performance or do you gain performance ?
Ive heard many different arguments for both sides and would just like to get the opinions of people on here.
Also im very interested in peoples expereiences with forward feed plenums on the NEO RB25DET. If you have one, what style did you go for?
I originally wanted a greddy one...but apparently they do not make one for the neo type and they would have to use an R33 one and drill new threads in the cylinder head to make it fit.
which brings me to my next question....is it BAD to drill new threads in the cylinder head ?
cause it certainly SOUNDS bad....
My next option short of a full custom job is to get one of them new adapater plates to make an RB26 plenum fit. If indeed this is truly a "bolt on" mod then would all the fittings and hoses etc fit on the rb26 plenum ?