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View Full Version : 2.5 inch compared to 3.



Eyedea23
03-31-2009, 06:15 PM
I am currently looking into exhaust systems and have found many different things. However I cannot decide whether i should get the 2.5" or the 3, cause i have heard somethings that the 3 does give some back pressure, and the 2.5 is very nice as well. Also, I am ordering the SU Test Pipe today, so this relates to the size of that as well. feedback would be nice :D

LBV
04-01-2009, 10:18 AM
With a 3" you'll likely get more in-cabin drone than with a 2.5" and I can't see there being any difference in performance.

coyfish
04-01-2009, 10:26 AM
Get the 2.5 unless your going to upgrade downpipes. Some say the 3 inch TP with the stock DP creates air turbulance and some say thats BS. Regardless you won't see any gain in power if you go with the 3 inch over the 2.5 so I would get the 2.5.

Eyedea23
04-01-2009, 12:01 PM
ok thanks alot guys

MS6 4 Lyfe
04-04-2009, 04:23 PM
Get the 2.5 unless your going to upgrade downpipes. Some say the 3 inch TP with the stock DP creates air turbulance and some say thats BS. Regardless you won't see any gain in power if you go with the 3 inch over the 2.5 so I would get the 2.5.

yea thats true but wat exhaust is louder..say i was to get magnaflow would 3 be louder or 2.5?

coyfish
04-04-2009, 06:15 PM
They would probably be very similar if not identical sounding.

chiefmg
04-04-2009, 10:11 PM
Magnaflow is only available in 2.5".

coyfish
04-05-2009, 11:15 AM
Think hes talking about the test pipe size . . . not the magnaflow.