The check engine light, this is a "knock sensor" thing when the M800 is installed hey?

Sometimes when i sting it in 1st it comes on, (hot TMIC???) but more concerning is it coming on at the top of 4th when doing a "real" 4th gear pull. (ie on a private road).

I know it flashes occasionally but how much is too much, how sensitive is it, and should it be comiing on at all?

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K.E.R.S!!!1