It's 2.5" all the way back to the last 12" of tailpipe.
__________________
05 KC SE 4x2 FFV, smoke, no big tow. Mods: Bully Dog Power Pup, JBA catback, S&B GEN 3 CAI, Hellwig HD traction springs, Nasta nerf bars, Kenwood KSC-SW1 powered sub, Grilleguy lower bumper insert, Autoenginuity/enhanced Nissan software. Latest 1/4 mile time of 14.632 running BD reg 87 tune +2 timing. JBA catback soundclip, just some revs: http://www.vimeo.com/634077
Its 2.5" after the "Y" pipe to just before the axle where it becomes 3". Its 2.0" from the cats to the "Y" pipe...
It's not 3" at the axle, only the factory exhaust tip is 3".
__________________
05 KC SE 4x2 FFV, smoke, no big tow. Mods: Bully Dog Power Pup, JBA catback, S&B GEN 3 CAI, Hellwig HD traction springs, Nasta nerf bars, Kenwood KSC-SW1 powered sub, Grilleguy lower bumper insert, Autoenginuity/enhanced Nissan software. Latest 1/4 mile time of 14.632 running BD reg 87 tune +2 timing. JBA catback soundclip, just some revs: http://www.vimeo.com/634077
There is a exhaust flange about 6-8" after the muffler. After the flange it turns to 3" pipe as it goes over the rear axle.
Sorry, that's not true, go measure it and you will see. Measure the circumference and divide it by 3.1416. I thought the same thing after that flange till a member corrected me.
__________________
05 KC SE 4x2 FFV, smoke, no big tow. Mods: Bully Dog Power Pup, JBA catback, S&B GEN 3 CAI, Hellwig HD traction springs, Nasta nerf bars, Kenwood KSC-SW1 powered sub, Grilleguy lower bumper insert, Autoenginuity/enhanced Nissan software. Latest 1/4 mile time of 14.632 running BD reg 87 tune +2 timing. JBA catback soundclip, just some revs: http://www.vimeo.com/634077
AutoForums.com is the premier network of enthusiast-owned
enthusiast-operated automotive communities.
We operate more than 100 automotive forums where our users consult peers for shopping information and advice, and share
experiences and opinions as a community.