hey guys
so im currently running a custom 3" exhaust with x3e 3 inch stainless steel twin dump (made from 2.2mm thick seamless)
im looking at changing this up as i want louder, and something a little better performance wise would be nice as well.

i am really considering tomei, however would like to ask you guys if its really worth the big money , also how does it compare to something like invidia, i was told by someone invidia titaninum cat is actually better than the tomei ti cat, this true?
which one would u guys sounds better/louder
also , if i did go ahead with tomei cat, would it be a disadvantage not to get the full tomei turboback system , or would just changing to a good cat be fine? (as far as im aware my twin dump is pretty good)
cheapest i can find tomei cat for is around $1580 (AUD) which actually seems like the best price by far that i can find believe it is on special atm .



also would u guys tune after a cat change? i will also be doing a hotside outlet for the car soon, and if its worth tuning i might look into a couple of other mods i can do or that are worth doing so i can get the best out of one tune.



thanks in advance guys