not on a bimmer. I have ridden in many M3's with Schrick cams and injectors and the only difference is the slower, deeper rumbling of the engine. It sounds better and feels better, not at all rough. If I were you I would consider some exhaust. Your car sounded awsome from the front but alittle shakey and rattlie from the back.
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Current standings: 98 M3 Track car
Mods: suspension, i/e/fly only
1/4th mile: 13.7@101 on 235/40 streets
Rd Atlanta: 1:44's on RA1's, 1:46 st.trs
Past cars
95 M3 3.2obd1
540i/6
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