Also remember that the six cylinder is producing fewer pulses per second for a given RPM. 75% as many. So a V8 winding up to 3600 RPM for a moderately aggressive shift is producing an exhaust note of 240 pulses per second (120 pps per side). The six, in the same scenario is producing an exhaust note of 180 pulses per second (90 pps per pipe). This can make the difference between the sound being perceived as a hum versus a buzz (rap). This can also make the six more likely to produce an annoying drone at cruise rpm. A crossover pipe tends to make both pipes produce the same, higher pitched sound, making it more hum-like.
Like edski says, you gotta control your foot when you're not in the proper, appreciative crowd.
regards,
Leon
