taws6

iTrader: (2)

Hi,

So I want stainless LT headers, and I already have a GMMG muffler.
I will proberly get a custom y pipe made up, (cheaper than getting one shipped) but I need to keep it road legal.

I live in the UK, and I believe our emmissions are 0.27 / 0.3 C02.

1. If I add cats, what would my perfomance gains/loss be?
2. If I add hi flow cats what would my emmisions proberly be?
3. And am I right in thinking hi flow cats are nearly as good (performance wise) as no cats?


Thanks for the help

noah89

Hi flow cats are installed in my numbers.

180ls1

iTrader: (4)

you will probably need obd2 cats. Which are made for 1996 and up vehicles i believe. Magnaflow makes some really good ones i believe they are called carsound cats also. You can also have yout y pipe made so the cats are removable so you can pop them out when you race or whatever.

taws6

iTrader: (2)

Hmm, sounds interesting, are there problems with leaks and ground clearance.
How easy are the cats to remove?(Asuming I got removable ones).

Anyone have answers for the other questions??

taws6

iTrader: (2)

Dohhh,
I posted in the wrong section, sorry guys must of miss read the title.
Mods, please feel free to deleate this thread. I'll repost in the external engine.
Thanks.