Z-Man Well-known member Premium Member Feb 14, 2013 #1 Can anyone tell me what the stock Compression ratio for the 900 is?
guidoxpress Well-known member Lifetime Membership Feb 15, 2013 #2 depends on altitude...but most are around 125-130psi
Z-Man Well-known member Premium Member Feb 15, 2013 #3 the Compression ratio Sean not the compression..lol
