Sk47

Yea yea i know this been coverd 1000x times but anything i find was posted 2004-2012 and i thinks thiers better stuff out their and more info

so my plan is all full on bolts on except cams on a 05 rsxs so i/h/e/tb/kpro and what ever else im missing i know that will make me around 215-230 hp depending on the dyno lets say if i was gonna add E85 to the mix thats been proved over and over to be in 83-85 range, at that station. How much hp will the E85 add?

JRCivic1

Very little... you have a great cylinder head. E85 has a higher detonation threshold allowing more ignition advance for forced induction or high compression applications... and you have neither.