To cat or not to cat ?

Whjaxn17 · 11-29-2021, 02:11 PM

Quote:

Originally Posted by iceice54

Hi All ,
I guess this question will end up in personal taste but , I am about to start customising my 370 GT roadster (2011) first port of call is exhaust, due to a sensitive wife I am going for a valved system and narrowed it down to two , a cat back from tarmac sports (£1800) or a manifold back with hfc from Powerflow (£2000)
Am reading that the hfc are not worth the power gain and could give reliability problems with cracking later in its life ?
Any thoughts?

Assuming these are UK based companies as I've never heard of either. A valved catback system(closed) with stock cats will likely be almost stock.

HFC will have a bit more volume. Boosted cars will burn them out, but NA, you shouldn't ever have an issue.

Not sure on your budget or exchange rates, but Armytrix is another quality, valved option.

MarkRT · 12-22-2021, 09:49 PM

Quote:

Originally Posted by Whjaxn17

Assuming these are UK based companies as I've never heard of either. A valved catback system(closed) with stock cats will likely be almost stock.

HFC will have a bit more volume. Boosted cars will burn them out, but NA, you shouldn't ever have an issue.

Not sure on your budget or exchange rates, but Armytrix is another quality, valved option.

Good to hear Armytrix is also recommended here. We'll work on my friend's new 370Z project after he sold his F250. We will finish installing the headache rack and undercover tonneau covers on the truck and will be delivered on the 24th. He's on a budget and the Armytrix is one of his choices.