i'm going to order a random tech high flow cat and they have the option of stock size piping or 2.5 inch piping. i have a greddy header and an apex-i n1 cat back. that should be the 2.5 right? tia
-Josh






weapon-r intake
greddy headers
apex-i n1 catback
afx udp
energy suspension
motor mounts
cf altezza tail lights
bored t/b
magnecore wires
hotter plugs

15.882@86.27

bump




weapon-r intake
greddy headers
apex-i n1 catback
afx udp
energy suspension
motor mounts
cf altezza tail lights
bored t/b
magnecore wires
hotter plugs
random tech hi-flow cat
on the way

15.882@86.27

I would go with the 2.5" piping if you must get one.

05 Mazda RX-8
06 Lotus Elise