Has anyone confired that an aftermarket uppipe flows better than a stock catless? I need to do a catless on mine and im trying to decide if i want to save money and buy a stock catless or just go with an aftermarket. I did read a review that someone did where they tested both and got almost identical results from them. Anyone have input?
I think it has been proven time after time that there is hardly any gains going from a stock catless up pipe to an aftermarket up pipe. Pros and cons to both if you are looking to replace a catted up. Stock will probably last you forever other that the heat shields rattling. Aftermarket up pipes have problems with cracking at the welds but they are easier to install/handle.
Thats what i had read, just wanted to see what others said about them on here, think ill save some money and go with stock catless.
If you do gut your factory cat, make 100% sure you have removed all of the catalyst before reinstalling.
Yea i thought about gutting mine i just would rather pull mine and have another on hand to throw back on so that my car isnt down all day while i gut the cat out and have to re-install.
Yeah and considering how cheap they are, it is good peace of mind knowing there is no catalyst left inside.