Amazing how some 2,5L are giving 160whp while 2,8 are 180-190.
2,5L guys needs to check for engine condition (leaks ? plugs ? vanos ? )
Statistically, m54 should put more whp than m52 and 2,5 vs 2,8 = small difference. Im from europe and guys here are pulling 160whp without mods on 2,5 and 155-160 on 2,8 without mods.
My friend have custom intake, ebay headers and custom exhaust and dynoed 220crank BUT 155whp. I can find dyno sheet if u want guys.