this changing downforces on you

[salixiiva]

Говорят о ПО для техники как я понимаю. 

"you can debate should it look like this, should it look like that, but in the end of the day that kind of information is very valuable. !this changing downforces on you! this is actually very valuable information".

[johnstephenson]

English = 7/10.

'in the end of the day' => 'at the end of the day' (set expression) = ultimately.

I've never seen 'downforce' used as a verb; it's usually only used as a noun (in aerodynamics etc) – 'a downforce'. The sentence is clearly written in sloppy/informal English, so 'to downforce' may be a slang/figurative term, though not one used by many people. If it's being used literally, it could just mean 'exerts a downforce on (the car you're driving?)'.

What does the whole paragraph and the paragraph before it say?

[johnstephenson]

Also the meaning of 'the changing' isn't 100% clear. More context needed.

[johnstephenson]

* 'this changing'