Quote:
Originally Posted by flinchy
CDV = clutch delay valve, has no impact when the clutch is in.. and i have mine totally removed anyway.
with the dyno there.. since it's measuring flywheel power, is it hooked up to an engine brake? as in, the engine is not in the car?.. it doesn't make sense anyway.. blue line is 220hp then red is 280?? i don't know of any N52's that are 220bhp?.. and if it's NOT measured on an engine brake it cannot be accurate :/
that's... that's amazingly heavy, sounds like pretty poor design from BMW! :O
there are already 135i's with high 5xx low 6xx hp and none appear ruined  .. i've been in high 4xx and they're great.. have to remember it's still a 3300lb car full weight, there are plenty even lighter with more power |
That dyno is from a Z4 3.0si (also an N52). It's that because that's what SS used as the development car.
SS's dyno can measure drivetrain power loss when it's winding down. They do a pull up (blue), pull down, and then add them together-- the result is engine HP (light red). They then do it again with the exhaust mod (in this case headers) and repeat (dark red).
20 hp from the SS headers seems conservative to me. They're going from collectors with integrated (and huge) cats to actual headers. It certainly feels like more than 20. We'll have independent dynos soon enough.
