Hi-flow cats for 370Z Nismo

[John Istead]

Hi guys,
I have recently rejoined the club & have a 370Z Nismo with an ARK cat-back exhaust & Stillen Gen 3 cool intake system. I am looking at adding hi-flow cats, & from scouring the web like the idea of the Tarmacsportz ones due to their comments regarding MOT testing, UNLESS YOU KNOW BETTER.
Any help would be welcome.
Thanks,
John

 

[Paul_S]

Hi John,

That's an expensive exhaust you have! I've not used Tarmacsportz but I know people who have and I've not heard any complaints. You have a PM!

Paul

 

[clandon]

Are you done installing a high flow cat? Did you notice any hp gain?