wow...15 hp and 11 ft/lbs...them's is crazy numbers...i thought cai's made like 7-10 horses usually...and if it's 2 piece...wouldn't that be a worse design than 1 piece, performance-wise...because it adds an extra joint, so the air don't flow as straight...but i guess if you're in a place w/ a lot of rain and scared of driving through 1'+ puddles, then you need the 2 piece