Thread: From 520i to 540i
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      04-15-2020, 02:31 PM   #19
csm7djs
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Drives: G05 X5 3.0d M-Sport
Join Date: Dec 2017
Location: UK

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I was running a JB+ box on my 520i and this made a real difference to the car. It basically over boosted the car. Get investment for £175 and bought from a forum sponsor on here
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