Exhaust Manifold

[Aaronjr01]

My Ph2 172 has a stainless system to the manifold with a ktec decat. Over the past few months though it has started getting a bit louder and sounding slightly like a tractor (hard to describe) but a few different people have told me they think the problem lys with the manifold, either its cracked somewhere or the gasket is gone. If it is the gasket its a cheap fix, and if it does need a new manifold i've seen I could get a second hand oem one for around £35-50 inc p+p. But what I want to know is, would it be worth my time fitting an aftermarket manifold that is less restrictive, and if I did get one, say 2.5" would it be easily enough fit to my decat pipe. And what sort of aftermarket manifold to get?

Please any suggestions are appreciated!

Thanks,Aaron

 

[Dan519]

alomst certainly needs a gasket kit to the downpipe

 

[Russ_16v]

As Danny has said most likely the gasket, but there is a chance the manifold could be cracked - you can have them welded so it might not be a lost cause

 

[Budgie]

Standard exhaust manis are ten a penny and perfectly capable should it need replacing.

If you did want an upgrade, change it to a 182 manifold. 4-2-1 rather than a 4-1. You'll need a link pipe to connect it to your 172 exhaust though.

 

[Aaronjr01]

Thanks for advice