For some reason my original topic about this was deleted, along with my account for some reason. But anyway, found a powerflow air kit for a 90 535i at bavauto.com, and they are one of the top bmw tuner catalog companies. I have seen cold air for the e39, but never for the e34. It made such a huge difference on my e30, and it was going to be my first buy for my e34, but I couldn'yt find a kit ANYWHERE. I've heard that cone filters actually reduce hp for e34's, but I contacted bavauto, and they said I could try it for 30 days and get a refund if it isn't satisfactory. The kit is 100 bux, so should I get it? And to all other e34 owners- What did you do in the air filter category? It just looks so... Stock.
1990 535i 5 Speed +[E.A.T. chip/Powerflow intake/Tri-flo exhaust system/Strut Tower Bar/Smoked Signals/Pioneer Head Unit/Crossfire vr401 amp/12" Crossfire BMF sub/eyebrows/18" alpina replica rims]+
6 cylinders, 5 Speeds, 4 Doors, 3 Pedals, 2 Exhaust Pipes, 1 Ultimate Drving Machine