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View Full Version : 2.25 or 2.5


FLAMEBOY
09-25-2005, 12:26 PM
i hav 2.25 piping atm... all i want to know is which one is better for 2.3lt? 2.25 or 2.5? i'm thinking to go NA mods later on...
AzMz3
09-25-2005, 01:49 PM
i hav 2.25 piping atm... all i want to know is which one is better for 2.3lt? 2.25 or 2.5? i'm thinking to go NA mods later on...

2.5"
FLAMEBOY
09-26-2005, 10:58 AM
2.5"

does 2.5 give more whp? no back pressure loss?
thebeansoldier
10-17-2005, 03:34 AM
http://**********************/index.php?topic=30097.msg425635#msg425635

dyno, review, weight, before + after video....

torque increase is very nice :)

http://**********************/gallery/albums/userpics/13371/dxkithp.jpg

http://**********************/gallery/albums/userpics/13371/dxkittq.jpg
BC3I
10-17-2005, 12:20 PM
is that on an "i" model?
thebeansoldier
10-18-2005, 12:27 AM
no, the rx8 wheels are just that heavy. once i get the race pipe finally installed, i'm gonna go back and dyno both stock 16s and rx8 wheels to see how much i should be getting.

edit: if the results are still relatively low for the 16 stockers, then maybe the shop's dyno just gives that low of a number. mine are SAE corrected at 4500ft.