Change in exhaust diameter...
#1
Change in exhaust diameter...
Have an exhaust question...I recently had a downpipe fabbed up, and it was gonna be hard to fit in a 3" pipe so went with the 2.5"...As of now the downpipe just consists of the flange with 2.5" piping, there are 2 O2 bungs and then it just ends in straight 2.5" pipe...Is there any way I can go to a bigger diameter(3" specifically) pipe farther down the exhaust say after a hi-flow cat...I looked for a converter that was maybe 2.5inlet/3.0outlet, but I didn't see any made that way...Is there anyway to change pipe diameter or am i just gonna have to go 2.5" all the way back...Just think 2.5" might be a little bit of a restriction, I'll be running a t3/t4 .50 trim on 2.5L 4banger...Let me know if you have any suggestions...
#2
Re: Change in exhaust diameter...
depends on the hp u r shooting for, i ran 2.5 for a while and noticed a few hp after the 3" but a bigger difference in spool time, many be look for a 2.5 -3" transistion racing solutions has them for 14.99 put that on as far up the dp as possible ie right after the bend under the oil pan hope this helps alittle
#4
Re: Change in exhaust diameter...
Originally Posted by CspecRun
Have an exhaust question...I recently had a downpipe fabbed up, and it was gonna be hard to fit in a 3" pipe so went with the 2.5"...As of now the downpipe just consists of the flange with 2.5" piping, there are 2 O2 bungs and then it just ends in straight 2.5" pipe...Is there any way I can go to a bigger diameter(3" specifically) pipe farther down the exhaust say after a hi-flow cat...I looked for a converter that was maybe 2.5inlet/3.0outlet, but I didn't see any made that way...Is there anyway to change pipe diameter or am i just gonna have to go 2.5" all the way back...Just think 2.5" might be a little bit of a restriction, I'll be running a t3/t4 .50 trim on 2.5L 4banger...Let me know if you have any suggestions...
and i happen to have one
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