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Performance Software
It may be a repost but I am currently looking for a performance chip. It's seem like that almost no product on the market give significative gain (at the rear wheel) without modifying the intercooler etc etc. I was looking at the JB3 which give same RWTQ and 10 more RWHP over the stock 1M dinan doesn't seem to do much better. There is the one from mega speed for which they claim 420hp and 682nm but the torque figure seem to be exagerated. Anybody know if you have to do some other modifications to achieve these numbers? Otherwise is there some better option that don`t require any other modifications? As BMW never give the true HP number I would like to compare RW figures.
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