Quote Osama:-
"I just opted for factory stage 2 kit on my 2017 M3W.
Does anyone knows what Stage 2 kit specs is, and how much performance increase?"
How can you opt for the "Stage 2 kit" when you don't know what it is or what it does?
I know what it does. but i heard conflicting info from the dealer. they mentioned camshaft mods.etc when i thought its just a computer add-on over stage 1.
