Hi All,
Just boosted my stock turbo on a R34 RB25 DET with neo head, stock boost was around 7-8 psi, after installing a turbosmart boost T we have boosted pressure to 14 - 15psi, say 14psi. The problem we are having now is that on full stick the engine rpm winds to 5000 rpm, pauses for a while then winds out to 7000 rpm nicely. Any idea what might be causing this slight pause at 5k under hard , full acceleration??
The problem seem to be possibly heat related as on the 1st run it seems find but on the 2nd , 3rd and 4th run the problem occurs, possibly the timing adv., sorry no dyno in Samoa
Help apprecaited.