I currently have a B18C in my ef and am running a Skunk2 2.5" Megapower exhaust. I have a Full-race Stage 1gt kit on order with the GT2860RS turbo. Should I upgrade need a 3" exhaust or will my current skunk2 be fine?
Want to run stock insternals and have a hp goal of around 300whp.


Link to current exhaust
http://www.youtube.com/watch?v=YbXWWSPzY40

 

You can run a 2.5" exhaust, but if you were to upgrade to 3", you'd let the engine breathe a little more easily. If you were to switch, after tuning, you would probably pick up a good amount of power. I personally think it would be worth the switch, but i dont control your bank account

 

2.5 inch piping is plenty for 300whp. buddy felix was making well over 500 with a 2.5 inch on his b20/vtec sc61 build.