alright...i have a 95 z28 and am planning on ordering an ORP tonight...i know i have to get a tune to get the most of it and i plan to do so...but im not going to until i get my 1.6 rockers put on and a few other things...will it be ok to run the off road pipe until then...? i dont have a rear o2 sensor since its a 95...so i dont see why there would be a problem...but i just dont want to eff anything up...i hate to bother you guys with this but ive been gettin all sorts of different responses from muffler shops and friends...you guys know what youre talkin about so i thought id see what you guys say...thanks..."D