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Afternoon, I have a 70 reg 235i and my car seems to pop a little bit sometimes on start up but then nothing when I rev it regardless of what driving mode I’m in
I’ve heard all the pre 2020 reg car and they all pop and bang as standard when at a standstill
Is this to do with the introduction of the opf filters or has it been coded through the ecu because I was wondering if removing the opf filter along with the back box would restore some of the popping
Cheers
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