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XI is slower, but dont tell me they are 20% slower. I run high 12's with a JB4 and DCI only, trapping about 106-107 mph which is only about .5 or less seconds off a similarly tuned rwd. Slower car yes, due to some loss of power through the AWD system, but they are not significantly slower. I also have auto trans, which loses even more power, and still am right along side manual 335i's
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335xi - BMS DCI - VRSF DP's - JB4 Tune - KW v1 -
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