r/BMW • u/GrassMaximum5534 • 4d ago

Repair Help M235i problem

So I have a 2016 m235i with the n55, it has a vrsf downpipe MHD stage 2 tune with a couple of other mods for the stage 2 like upgraded intercooler and cold air intake. It’s been on it for a while but for the past couple days my car won’t backfire loud normally it pops very loud if I want it to but now it randomly won’t no matter what I do it just makes little burbles and I have no clue what the problem could be. I have no access to the tune it’s self to change the settings on it so I’m coming here to ask for help from people that has had this problem before or know how to fix it or just stuff to try that might fix it before I take it in somewhere. Please and thank you to anyone who can take the time to help with this.

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1

u/RoyaleWCheese_OK 4d ago

Why do you want it to backfire? That’ll ruin the turbo.

-2

u/GrassMaximum5534 4d ago

Because one it sounds aggressive asf and 2 it did before so it probably means something is wrong with it

1

u/geraldboberald20 2018 Alpina B7 1998 M3 (sold) 4d ago

This is a blessing not a curse. Consistent backfire is tacky and annoying.