I am staying NA. I plan to replace the internals, raise teh compression a little, raise teh red-line, and drop teh vtec little on an 04 RSX. What is teh highest compression I could go without running race gas?

i wouldnt go more then 11.5

thx

you are aware that if you drop the vtech to low you could actually lose power instead of gaining it

fully, I am only dropping it from 5800 to like 57 or 56, maybe 55 depending

are you east coast or west coast? there are some people around here running 12s compression daily driven; its all about tuning. hondata k-pro will work for you; change vtec crossover and bump the redline.

hondata is expensive though. I am east coast.

this is for a 99 civic si.

Suspension & brake mods wheels:
Tokico shocks & springs
Volk te37 bronze 15's
Brembo cross drilled rotors
Vis carbon fiber hood
03 Si front seats & no back seat
2.5 exhaust & high flow cat
dc sports 4-1 header

Egine mods:
Jackson racing adjus. cam gears
Kms titanium valves, springs & retainers
Mild p&p head
Exedy racing clutch & act flywheel
Comp cams stage 2
Civic type R pistons balanced
Civic type R rods
Rc 660 cc injectors
Aem fuel rail
Crank pulley
Soon to get ericks racing throttle body
Hondata stage 3b system

i already have the parts but not installed yet.