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Originally Posted by Peertwelve
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Originally Posted by tom @ eas
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Originally Posted by NightWriter
Any references/links to S55 results?
I'm generally skeptical that an air filter replacement can realistically deliver meaningful increases in output. (If it were so cheap and easy, why wouldn't the manufacturer do it from the factory?)
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This falls under the "engineers vs bean counters" category. But you will see them in race/high performance environments, including Formula 1 & Le Mans.
You can see links to S55 dynos here, as the DME is making incremental gains from each run: https://f80.bimmerpost.com/forums/sh...1#post16507069 |
Thanks for the link Tom. On that F80 post you said
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While gains are minimal on a relatively stock engine, these will be prove more beneficial once more performance parts are available, such as tunes and exhaust. A bonus is a mild amount of turbo spool noise during revving.
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I read that as "a tuned car will produce more with the reusable BMC filter". But above you mention 10hp. Is that gain expected on a stock G80? |
BMC filters should produce gains on a stock vehicle. Here is the S55 dyno.
Bigger gains are to be had when tuned obviously.