04-23-2006, 03:29 AM
Im trying to figure out what the stock exhaust pipe is on a 2005 ZX5 SES. I called my local ford dealer they told me 57mm and it looks like its about 2 1/4 but i want to be sure...if any one knows can ya tell me please? lol thanks
04-23-2006, 08:02 AM
57mm converted to normal is 2.24" so looks like you are right.
04-23-2006, 12:11 PM
so i wasted money buying a 2.25 catback?
04-23-2006, 12:15 PM
not necessarily. The muffler and airflow dynamics of the aftermarket exhaust play as much of a part in performance gains as does the tube diameter
04-23-2006, 02:22 PM
cool thanks. Now one other thing. is that inner or outer diamater? lol
When i had just bolt-ons i made more power with 2.25" (bosal) over the 2.5" (borla).
04-23-2006, 03:01 PM
no you didnt waste your money...2.24 and 2.25 are close enuph it should still work.....I hate metric lol standerd is the way for me. :D