Is a 2.5" cat back okay for the below mods:

Injen RD1450
TODA Headers.
Hondata S200 ECU (maybe APEXi Power FC - Depends on Tuners in my area)
MAYBE, TODA Cams. But undecided yet.

I'm getting my cat back done next week, custom cat back with 2 resonators and cannon. Not sure if I should get the 2.5 or 2.25" diameter though.

Thanks

 

Id say 2.5" but thats IMHO. just incase you happen to get more power, you dont have to switch everything all out.

 

word^

 

2.5

 

2.5 should be good.