F80/F82 Horsepower Underrated

[justinca540i]

That's amazing. Dyno runs have been reporting that BMW is being conservative with the rating of their new M3/M4s.

Reports have shown that they are making about 460HP at the engine. But 415HP at the wheels.

While BMW is reporting 425 at the engine.

http://jalopnik.com/the-true-power-of-the-2015-bmw-m3-revealed-in-dyno-run-1603070524

[auaq]

That news is old news and BMW has always been like that for a long time. Currently, there are mods done to extract 500+ whp already. It won't be long till we start seeing well over 600+ whp as N54 have been proving for quite some time to around 700+ whp on stock internals with turbo and tune mods only. The most recent record is 8xx whp a couple of days ago.

[justinca540i]

That news is old news and BMW has always been like that for a long time. Currently, there are mods done to extract 500+ whp already. It won't be long till we start seeing well over 600+ whp as N54 have been proving for quite some time to around 700+ whp on stock internals with turbo and tune mods only. The most recent record is 8xx whp a couple of days ago.


Yeah. Did they under rate the E39 specifically the 540i? Tried looking for info but nothing to be found.

Still really cool.

[auaq]

Probably not. I believe a few of ///M motors were underrated, the successors to the M6x and M5x engines have been, and now the different turbo engines have definitely been underrated by BMW. A lot of dyno results proved it. From the little N20 turbo to the big and mighty S63tu.

[justinca540i]

So its been mostly just turbo engines that's been under rated?

[Kevlar]

They likely underrate the engines to compensate for heat soak ... cause you know the minute somebody does a redline blast through the desert and then straps it to the dyno and find 1 less HP than advertised they are going to raise holy hell and how BMW promised and didn't deliver.

[auaq]

Yes, mostly turbo engines.