Rs stamped manifold question

[fishmitten]

I have a ph2 172 , in my shed is a rs inlet (182) is it worth putting them on my stock 172 , if so what's the gains ? If any
thanks

 

[James]

Your 172 might already have the RS inlet. Mine did

 

[fishmitten]

Not sure what the difference is lol ,

 

[James]

They'll have the letters "R S" stamped on the underside of them. Suppose to be slightly larger

 

[steve!pax]

The inlet holes are slightly bigger and and better fit, a lot of people say there are good gains to be had.

 

[fishmitten]

Are they actual gains or boy racer dreamer gains ( I.e putting an exhaust on gives 1 million horsepower etc lol )

 

[Cub.]

There are gains. But they are so small in the scheme of things you won't notice them.

 

[sheff01]

If you don't want it I'll take it off you