I feel like I got an amazing deal for my walnut blast and oil change last week. My 335is had a rough idle and was slow to respond. I had installed a MHD and was running stage 1 being completely stock before the blast and it still rough and slower than it should have been. Idle is super smooth now and it pulls like a boss. I actually blew my stock charge pipe on the way home..... oops! I am definitely coming back for more.
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