300hp from "stock 250hp"

[jibby]

Red Supra - I really don't know the advantage to having a wet kit nos system, I would like to know? My dry system works super... The power comes from the pressure in the nos bottle, so low pressure bottle like 700psi produces 75hp high heated pressure 1200psi produces 125hp+ for example on my car. Anyway, just wondering if you put in a nos on your car? If so tell me about it? Thanks

 

[rarson]

Honda's K20 engine shows gains when switching from 2.5" piping to 3" piping. I myself figured that 3" was way to big for a naturally-aspirated 2.0L but it has been backed up with proof. Now... I'm fairly sure that cams and a higher rev limit came into play. With a relatively stock setup I would expect 2.5" to be closer to optimal.

The thing is, just like boost, it's not just the capacity of the engine, but how well it breathes, too. So different mods will require different piping diameters.

Sorry, I didn't want to sound like a rant or go off on a tangent, but I just wanted to put a little bit of info out there.

 

[Anaema]

i just found out that Extrude Honing the intake manifold and heads on any engine will see some good gains.