hello fellow owners. just gettn my first stagea its a 99 rs4 s and wondering what mods can be done to the neo engine with out spending mega bucks. (and f*kn it up) Im thinking maybee puting on a exhaust, front mount, bov and uping the psi a notch and then a good tune but this alone is costly. if anyone has done some budget mods and can help me out with some info that would be much appreciated.