E90 N52 6 cylinder stock and tuned engine dyno comparison, 325i, 328i, and 330i
OE Tuning recently tuned three N52 based E90 3 series. The first car was a 2006 E90 325i on 91 octane that was completely stock. The second car was an E90 328i also on 91 octane and completely stock. The E90 330i had an aftermarket filter and BMW performance exhaust, also on 91 pump gas. These cars all share the same basic motor but with different intake plenum designs and tunes. They were all flashed with an off the shelf tune available from OE Tuning for $395. The results are quite interesting, check out the graphs below.
2006 BMW E90 325i 91 octane, no mods:
E90 328i 91 octane, no mods:
2006 E90 330i, K&N filter and BMW performance exhaust: