Vti-R Vs. Type-R Cat Converter

[MM89]

hi flow cats are good to have/change when you're doing your
catback and headers. at least you will not have to return to
the exhaust shop a second time when you realise you wanna
change to a hi flow/jdm cat.

having said that; if you are getting a 2.5" aftermarket hi flow cat,
make sure the exhaust shop does not chop your catback and replace
the triangle flange with a 2 bolt flange on the cat and catback.

most exhaust places will not be able to match robotic welds that are
on japanese catback systems. welds are much cleaner and consistent.

[RoryAlexander]

Well, I most likely will not go to a exhaust shop, my brother has a number of friends who are more than able to fit these sort of things. i would NOT let anyone cut up the exhaust.

So by buying a universal cat converter and welding on flanges, i eliminate any fitment issues?