BMW 2002tii Exhaust Tip

I put a Starla exhaust system on my 1973 BMW 2002tii and the car developed an exhaust resonance between 3800 and 4300 rpm and later at around 3200 rpm.The Starla was the suspect, since its muffler was a poor fit…. Many people have had excellent results from the BMW OEM systems, made by either Eberspacher or by Leistritz.