The ricer boi plague has eaten and gone through all the civics, miata's, s13's and bagged GS300's.

They are now feeding on the Z... It's the new Honda 240 gs300...

 

#swagballapointsyo

 

4-Stroke Engines do not need back pressure. Back pressure reduces power

2-Stroke engines need back pressure for efficiency.

 

Back pressure isn't needed but scavenging is. Scavenging decreases as exhaust diameter increases.

 

Exhaust velocity being optimal at desired RPM for power, but I would run open headers over stock exhaust any day(I mean not the whole sound thing, because my electric cut-out off my turbo sounds like azz)

 

#turbonator

 

fixT

 

OP has no money and wants a nice exhaust sound.

 

FIFY.

 

Like it would matter what that end section of the exhaust is.

 

Get test pipes, they're not too expensive.

 

A 4 stroke doesn't need it as much as a 2 stroke does. I will agree with that. But your claim is that a 4 stroke doesn't need it at all... It is ideal to move exhaust gases out as quick as possible. They move out quicker once you have smaller diameter primaries and a properly sized exhaust pipe. But hey, if you want to build a 6" exhaust with 3" primaries on your headers, be my guest. Let's see your engine make the same power before and after

 

get some 3inch carbon fiber burnt tips. keep in mind you will need a tune after a mod like that though