When you clog a suction hose on a vacumm, it must let air out to suck air in. If you add a free flowing exhaust you must also add an intake.K20A EH2 said:I recently read that the K20 does not respond well to larger diameter piping.
Any truth to this?
Needing back pressure are lies but too big of a pipe affects velocity.supafly said:That's pretty amazing.... Any loss in torque????
It's hard to believe all motor running 3" thats KRAZY...
I remember people doing that with B series and it literally killed their car.
I have to go with the 2.5 b/c of my muffler.... That sux.
Let me know ..im a ways off from dynoeing the diff between the 2non vtec said:I definately say go with the 2 1/2" it might be different on a road car, but running an almost open header set-up the 2 1/2" set-up worked better, no dyno figures yet though..