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      10-09-2018, 02:31 PM   #32
chewbakam4
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Drives: F82 M4
Join Date: Oct 2015
Location: Malton

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Quote:
Originally Posted by CanAutM3 View Post
This bolded statement had me chuckle.

As a professional engineering that has spent the majority of his 25-year career (and still counting) around engine testing for an aircraft engine manufacturer, I got to learn a thing or two about dynos and power ratings . Where I work, we have several dozen multi-million dollar engine test cells with a support team of well over 100 engineers, technicians, mechanics and instrumentation specialists that are responsible to maintain, calibrate and correlate the test cells. Further, there are many variables at play during engine operation depending on each particular operating condition. This tells me than obtaining accurate and repeatable power ratings is not a simple task that any corner shop can achieve with a basic chassis dyno. Hence why I take all those dyno plots posted everywhere with a certain grain of salt.

I think we agree on the fact that the acceleration figures previously posted are not aligned with power charts posted in the OP. However, knowing what I know about dynos and engine testing has me having greater faith in the averaged acceleration results obtained by multiple independent publications. The sample is large enough for me to have confidence that the power in the powerband of the CS tune is significantly greater than that of the CP tune, resulting in superior acceleration.

You can believe what you wish, but it isn't "proof" just because it is what you believe.
As an engineer with 25 years of experience instead of testing it out for yourself you’d rather be hypothetical? Engineering is an applied science so you need to try it for yourself. I have run bm3 aince the beginning and I can tell you these guys and BM3 have been nothing but transparent and just honest. We can discuss numbers here of course. They’re here for discussion and what makes it fun.

Halim thank you so much for doing all this for us and showing results on same dyno same day! Is this on your new dyno? Hope we see even more charts soon and vbox or dragy numbers!
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