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sorry...first timer here. where should i have posted it? i realize that i have and s4, but my engine is practically and rs4 engine.

ok guys...i coming to you guys from deep in the heart of texas.....i have had this issue with my car for awhile now. it all started a year and half ago when my mechanic was getting the best of me and has since left me to be on my own. for you RS4 owners...what are you doing as far as tuning? i haev ...