Quote:
Originally Posted by Lee
Mine seems silly loud, i have an efra pipe, but when i start it up in the garage, my ears are ringing for a bit after.
It benefits me though, i cant hear her moaning for a while afterwards 
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whats the number on the pipe you have?
the older 2 chamber pipes were pretty much all 9 numbers eg 9863, 9886 9853 etc apart from the 9901 which was a 3 chamber

pretty much all the existing 3 chamber pipes had numbers starting with 2
2027,2047,2030,2032,2045 etc the only marked exception to this was the OS2050 which was a 2 chamber so aside from a couple of irregularities the earlier pipes were easy to categorise
as for the numbers on the new deign 3 chamber pipes i suppose we just wait & see