Quote:
Originally Posted by Cyberdemon
Sorry not sure how you got those numbers? If you are totally stock you're comparing 255hp to 325hp. That's a 28% gain, 18% if you're comparing the older 300hp quoted N55 tune (which was also underrated. Ignoring manufacturers numbers for a second:
Looking at most dynos the 330 actually dynos at the crank an optimistic ~210hp/200ft lbs even with a tune.
The stock M235i tune of the N55 shows about ~310hp/325 ft/lbs.
Thats a 100hp/125ft/lb delta, 48% more HP, 62% more torque. That's substantial.
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I was quoting 300hp as the 'normal' N55 35i engine output, because that's the engine that's compared against most, tuned the most, advertised the most etc. I bet most people don't even know what the PPK is, nonetheless that our 235i's come with one from the factory.
Also, I'm not sure what 330i you're talking about.. since my E46 330i ZHP dyno'd 205whp/218tq at the wheels with only a BMW Performance intake & fresh VANOS rebuild. Figuring BMW 'rated' (because rating and actual are usually different, as we've all found out) the E90 330i at 255hp, It's safe to assume they dyno around ~220whp (and a quick google search proved me mostly correct) and you can use whichever drivetrain % loss you'd like to figure crank power.
But with all of that aside, taking BMW as THEY rate cars.. 255hp to 300hp isn't all that much for a turbo. MPPK & tuning aside.
None of that matters though. The point I was trying to make is that BMW turbo'd an already pretty powerful engine for decent gains, and MB turbo'd a tiny 2.0L for fantastic gains... both landing them on about the same 'stock' playing field.