E46Fanatics - View Single Post - Difference between s54 and m54
View Single Post
Old 10-20-2010, 12:51 PM   #11
58mm of Bliss
PEI330Ci's Avatar
Join Date: Jul 2003
Location: PEI,Canada
Posts: 4,370
My Ride: 330i, 330Ci
It's in the cylinder head.

S54 Intake port = 275 CFM

M54 Intake port = 200 CFM

The rest of the stuff listed above is small potatoes. Want proof? I strapped an ITB intake onto a built M54 and lost 30rwtq and gained peak 5rwhp. Yuck!
PEI330Ci is offline   Reply With Quote