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Discussion Starter #1 (Edited)
I was looking at a a fuel management controler and rev limit adjuster from magnum tunning. Has anyone tried these if so did they do what they claimed, before i spend the time and money.
I really want to increase the top end speed of my 2018 825M S4
 

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I’m not really sure about this tuner it looks like a one size fits all approach to tuning not really vehicle specific. It may be fine but who knows until you try I guess. Let us know the results.
 

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Discussion Starter #3
I purchased the rev limiter adjuster which says it will alow me to turn up or down the topend rpm 20 rpm at a time ounce installed.
It also states that I have to Take apart the ECU and remove the Crystal Osilator so it can be put in the unit from them and wires installed into the ECU
OH BOY JOY this is going to work or cost me some bucks
 

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Is the rest of the motor capable of the increased RPMs? Thinking valve springs and the added stress to the motor.
 

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That was my take on this chip/tuner. I would feel a lot better if they studied the gator engines and knew what they were capable of but it sounds like you just hook it up to any machine and turn it up until it blows.
 
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