Im gettin my cat back exhaust next week 2.25" i got a 99 civic dx my friend told me i should put a resonator but i dont know i heard straight pipe wouldnt do good cuz of the back pressure and that aint good for the D-series and it would be loud as hell also without a resonator i dont want it to be that loud i got me a N1 muffler for it too so wut u guys think i should do straight cat or w/ a resonator thanks...