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I have Bm3 with MPPSK. I like to change burble settings as MPPSK stock burbles are like farts sometimes.
Planning to get catted DP, sound should increase 25%
With catless I can't pass inspection. Also catless with MPPSK with open flaps in sport mode is essentialy straigth pipe because MPPSK has no mid pipe silencer and open flaps will bypass rear silencer.
Also catless got the smell which I don't like.
But the sound is great.
If you get bm3 stage 2 you need to replace plugs and gap them correctly to recommended gap, it's on bm3 website. coil pack replacement not needed.
Stage 1 doesn't need the gap, but can resolve timing pull
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