Quote:
Originally Posted by solstice
Nice!
Here's a pretty clean audio of the only production I6 turbo M car, it's in cabin but it would be interresting to see what top rpm the SW spits out.
4:24 and 4:28 for example seems like possible redline shifts.
( if you watch the whole thing you will also see two M3s showing who the daddy is )
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Thanks. Although it is quick to do I don't want to analyze video after video. Anyone can do this with a plethora of free audio tools on any OS. A quick analysis of this one though around 4:24 indicated a much lower peak rpm than the 7000 rpm redline. The method is absolutely not 100% robust for all recordings but the baseline cases of the dyno runs completely convinced me that it can work. I suspect one reason here is simply the fact of internal vs. external audio. It's no doubt the design of passenger vehicles is to drown out a significant portion of engine and exhaust noise.