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the JB3 doesnt actually give you more power on its own Vs the reflash. I have been to willowbank raceway with a fellow 1addict that has JB3 and our times were very similar. my quickest time was a 13.17 and his was 13.20 so as you can see there is very little difference in them. He drove a manual and mine was auto. The price is very high I agree but this is 100% undetectable by bmw unless they whack the thing on a dyno themselves so this is why i chose this option.
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