You have your opinion I respect it, you donīt want to hear a different opinion so theres no much room for debate there. For the DPs, what I know is that they are some regular DPs with no brand on them made for my tunners in the USA, Im not sure why it gave the car that power increase, donīt think is the DPs desing they just look like regular DPs from other brands, but its looks like u know more so I just attached some pics maybe Iīm wrong. What I think, my car is a EU spec with no OPFs, thats what they send to my country, so BMW cranks UP the boost by 0.2 bar to compensate, but if theres no OPFs any improvement in the exhaust will give better results, but im just speculating. If you want to try them you can contact big boost turbo LLC, is the USA brand owned by my tunner, they have try them on two M2C here and the results were exactly the same.
I just attached some other pics so u can check the dyno numers by yourself.
Last edited by daap1193; 06-02-2020 at 11:46 AM..
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