Any idea on when/what components start breaking in the m177 or the MCT? Specifically at what power and torque level...i.e. will a simple tune cause problems down the line (Renntech/Eurocharged)

 

Could anythings possible, from what I've read and spoke with tuners on these cars it's torque spikes and over heating that damage the trans. Not sure if anyone destroyed a motor yet.

 

The MCT is rated up to 1000 nm (737 ft-lbs torque), so consistently exceeding that torque limit may result in trans slipping and/or damage. The engine itself is extremely stout, I don't think anyone has explored the power limits on the stock internals. The M177 itself is very over engineered - if I were to guess, 750 hp is probably a safe number.

A tune and bolt-ons on stock turbos won't cause any issues.

 

Given it's mostly the same engine in the 600+ hp stock E63S (yeah yeah, swapped a few things, but mostly for breathing) for factory warrantied longevity, I'd say the safe limits for aftermarket might be even higher.

Seems like Chris was told or hinted at that this engine series would be capable of much, much more.

The weak point will definitely be the transmission.

 

in the end its as history repeats itself, just like the last gen with the 6.2l amazingly it could even with stand adding a super charger but the trans seems to be the limiting factor once again.

 

I'm actually awaiting a GLC63 (1st decade of November build) so will have the 9 speed MCT and 4matic+ from the E63S.

So tune only SHOULD be within the limits of the vehicle yes?

 

Absolutely. Tune-only, and even with mild bolt-ons, will not yield the torque levels that would be remotely close to giving this drivetrain issues.

 

I made 748WHP and 778WTQ on Pump gas and Meth on stock tranny and stock internals, going solid with a lot of abuse.

 

What's your build consist of ?
Can't wait to here and who tuned it.

 

Pure900 turbosCatless DP
Eventuri Intakes
Meth kit
Some other stuff I don't remember

It was tuned by Kevin from Lab Workxs

 

How long have you had the car at that level? Has it been since the time of that video (Sept. 2019) or longer than that? Did you get a re-tune after adding the Eventuri intake? Any performance gain from it over stock (or whatever you were running before)?

 

Pure 900, catless dp, and intake. 700whp and 720 lb tq. Everything else is stock. Had the tune for 10k miles and no problem