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      03-19-2019, 09:26 PM   #1
OtisX7
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Is the 50i really a different engine from The M50i?

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Wondering how different these engines really are. The latter is just 70 or so HP more. When you look at what some of the tuning chips can do ó I saw one posted in this forum that gets another 80+ hp out of the current 60i engine ó and I wonder if Iím fact the upcoming M version is really nothing more than software tuning on the same or nearly identical hardware.

Anyone know what the difference is between these engines? And might it be easy enough for those of us who bought the 50i to ďupgradeĒ our engines to almost identical to the upcoming M version?
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      03-20-2019, 10:40 AM   #2
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Itís not just software. The upcoming 2020 M50i versions of the X5 and X7 will be getting the 850i engine. Although both engines fall under the same N63TU3 engine code, more specifically, the current X5ís and X7ís is actually the N63B44M3 while the 850i uses the N63B44T3.

As documented in this article, the more powerful N63B44T3 adds high-pressure 5,000 PSI fuel injection, enlarged twin-scroll turbochargers, a redeveloped intake manifold and an additional upstream radiator, compared to less powerful the N63B44M3. The 2020 X5 and X7 M50i are expected to get the N63B44T3 engine.

That said, Iím sure it wonít be difficult for tuners to simply increase boost via software to essentially accomplish similar power and torque figures, if not more, at the expense of a little reliability and efficiency without the aid of the improved hardware upgrades.
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      03-20-2019, 07:00 PM   #3
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Quote:
Originally Posted by masmole View Post
Itís not just software. The upcoming 2020 M50i versions of the X5 and X7 will be getting the 850i engine. Although both engines fall under the same N63TU3 engine code, more specifically, the current X5ís and X7ís is actually the N63B44M3 while the 850i uses the N63B44T3.

As documented in this article, the more powerful N63B44T3 adds high-pressure 5,000 PSI fuel injection, enlarged twin-scroll turbochargers, a redeveloped intake manifold and an additional upstream radiator, compared to less powerful the N63B44M3. The 2020 X5 and X7 M50i are expected to get the N63B44T3 engine.

That said, Iím sure it wonít be difficult for tuners to simply increase boost via software to essentially accomplish similar power and torque figures, if not more, at the expense of a little reliability and efficiency without the aid of the improved hardware upgrades.
Thanks. Helpful. I may go this route, get 70 or 80 extra hp that way, throw on an M badge for the extra 10hp upgrade (wink), and call it a day, rather than trade in for a new 2020...
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