Quote:
Originally Posted by Deubert85
Thanks Dush. I was searching the engine thinking there can't be another set of engine air filters. Have you noticed any change in the M performance air filter compared to the standard
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Not for stock 50i, but for tuned I noticed a bit improvement in acceleration. Usually people say buttdyno is noticeable when there's a 10% change. I'm not sure if it's that much in this case, but even if it's 5% it's still a lot: 5% for tuned n63tu is about 25whp
Filters have 14% more volume flow when tested on flow bench by our forum member. I'm not sure if Stage 1 tune takes advantage of it fully or we need Stage 2 for that, but for the money they cost compared to stock 50i filters ($100 more than 50i filters) - why not? Folks with same engine n63tu in F10 forum spend literally $1-2k for a good intake (they have much worse intake design due to more limited space under the hood compared to our x5 cars).