I'm lookin to buy a 2 step rev limiter or wot box for my 2000 bmw m5
I used n2mb wot box on an e39 540i6 car must be manual but it’s pretty simple install just take your time and fallow all the directions you will need a computer for setting values in the wot box make sure the software works on your computer as well, as my first laptop with windows xp wouldn’t run it, but my friends windows ten laptop ran everything beautifully, also if you intend to hold the rev limit longer then a couple seconds I suggest hitting your cats or getting test pipes as you will end up blowing them out after constant use
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