New Y-Pipe Section question

[KurtB]

Hi,

 

I need a new Y-Pipe section for my exhaust. I have a resonated Cobra mid and backbox, and standard Nissan Cats. Does anyone know what y-pipes will fit this, as some adverts show 2.25"inlet 2.5" outlet, others show 3". I would like to keep it reasonably standard noise and power wise, as I don't want to create problems with engine lights and mots (or is this just in the case of straight through cats?) 

 

Thanks

Edited April 24, 2018 by KurtB

[Bakkums]

I have berk cats and a circuit werks resonated y-pipe and stock back. No problems with mot (netherlands) and noise. But noise is personal.

[tomhess1010]

I have Cobra exhaust and standard cats, with a Stillen y-pipe and it fits a treat. Pretty sure you can interchange most y-pipes and it's only the cats that would make your engine light come on!

[fergie1471]

What is the reason for changing the y-pipe?

[KurtB]

Thanks for the replies. Yes I think you are right that it is straight through cats that could potentially upset the warning light, not the y-pipe as it doesn't really do anything  I have the standard cats so no problem there.

 

I needed to change the Y-Pipe as it was blowing and was beyond simple repair. I have since replaced the Y-pipe and everything fit right and no lights! No increase in noise so should be good for MOTs. It looks quite smart it is a shame it is hidden underneath the car 

 

Kurt

Edited May 3, 2018 by KurtB