that is 3.16i Normally they don't sound that loud but its sport exhaust If it wasn't for the sport exhaust, it wouldn't have made that much noise anyway. This sound usually occurs on 3.20 and higher models.
This (rare) 316i (fl) has 1.8i m10 105hp (engine from pfl 318i), but that was only for part of the 1989 model year, normaly they have m40b16 102hp. 316 (pfl) has 1.8 (carb) 90hp
