first off, i don't want a race car, thats why i got an accord lol but a lil more power never hurt anyone the stock exhaust has begun to leak, so i'm debating whether to get 2.25" or 2.5". whats the pro's and cons of the 2.25 and 2.5???? dosen't the 2.25 proviede more low and mid torque/hp and the 2.5 is more for top end?? anything else?

 

2.5 or more... 2.25 should only be used on a 1.6L IMHO.... When I up'd the size of my b-pipe, I noticed an all around gain...haven't dynoed yet but you'll want 2.5 or even larger...dun exceed 2.75. Unless boosted. Do a search if this isn't enough info for you...there are a TON of threads...