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So, I (finally) got my de cat manifolds and equal length downpipes installed.
Question is: Do mine sound as yours ?
Mine develop a heavy rasp / resonating sound from about 2000 RPM upwards that seems to die off at about 4000 RPM.
Is that normal ?
I had thought that the rasp sound would not come on till say 3000 RPM.
Question is: Do mine sound as yours ?
Mine develop a heavy rasp / resonating sound from about 2000 RPM upwards that seems to die off at about 4000 RPM.
Is that normal ?
I had thought that the rasp sound would not come on till say 3000 RPM.