munz4130

My short story: Did a dyno on my stock rb25det S1....got only 180bhp atrw.....from the graph A/F was very very lean....damn dangerous & freaked out. Suspected it was a faulty fuel pump, changed to walbro 255l (& FPR) then dynoed again with 0.8 boost got 255bhp atrw with very safe ie rich A/F ratio. Hope that helps.

Thats what I was thinking also.. the flow rate....I wonder if the R34 SMIC flows enough at the current boost of 0.8 bar? I was thinking maybe I could put the FMIC on, then maybe increase the boost up to 0.9bar.....then possibly get about 280bhp++?

Hi all, Engine is RB25DET R33 S1 (body is Silvia S14)......dynoed & got 255 bhp atrw.......Mods made to my car:(very basic ie not much) Stock turbo 3" exhaust 3" J pipe r34 SMIC running boost at 0.8bar HKS pod filter Walbro 255l fuel pump Aftermarket Fuel Pressure regulator Wishing to get more bhp.....if possible 300bhp without changing the stock turbo?? My question is if I install a Blitz FMIC will it increase my bhp to maybe 280bhp? Sorry if lame question but i'm thinking that if with stock boost I wont get much increase in HP by changing to a FMIC.....but i hope with the higher boost of 0.8 then there might be a more substantial increase....