I'm saying if the mod requires the vehicle to be moving, then yes, I'd say both Dinan and MS stg2 are underrated on the dyno. A giant fan in front of the car does not even remotely simulate real driving. You will need air compressors to simulate incoming air, which most shops don't have and won't have.
I know everyone says "just get a drop-in", I feel the otherwise as I have tried a BMC drop-in, MS stg2, and now I have a Dinan cf intake coupled with MS air filter.
Congrats on your Dinan, it's the best intake option for our M3.
I also have RPi v2 scoops installed, don't know if they help at all since the kidney air inlet is so small, but this video shows they do route air into the motor better.
Quote:
Originally Posted by Sully1Time
I'm confused, are you saying Dinan is under rating how much power this kit makes?
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