If you were to compare the 20 whp gains on the UR setup from 3" dp and exhaust to 13whp on RV6 dp on the same dyno, numbers would be more like 13whp for RV6 & 16whp gains for UR. Both companies dyno'd on different machines. Others from the 9thgencivic site compared numbers, adjusted numbers based of comparable data to come up with these numbers.
So if, UR gets 16whp from 3" dp & exhaust. We only need an exhaust system say from, Magnaflow, G-Reddy, CT Engineering, or even RV6, etc... to show gains of 3 more whp to equal the same as UR's total setup. Seems that exhaust systems gain more than 3whp.
But we have to remember that we don't have flashpro for any of this.
I don't plan on SC or Turbo'ing. Do you think 2.5" or 3" would be better for my setup? Injen CAI, P2R TBS, hopefully dp & exhaust soon!