i have a f22a civic makes mid 400s hp runs high 10s in 1/4th. u can read my sig its basic piston rod engine with hx35/40 turbo. i am wanting to take it to the next level sleeved block and built head. i have talked to portflow, the guys there tell me they can get a f22a head to flow 350cfms. he told me it is actualy one of the best heads if i want to spend the money to get it there. so with that said is it worth the money. this is a flow chart of a stock head and p&p head. Portflow tells me bigger valves realy wake this head up.

 

bump

 

Increased head flow increases engine VE and will make more power just like it does for any other engine.

 

have a nice life