Your JB4 is working if you get the yellow screen and your tach/speed are moving. Memorize the steering wheel controls spreadsheet T has on N54tech. Everything you need to know is in that thread too.
PERFORMANCE: JB4 G5 ISO, DCI, BMW performance exhaust, BMS 3" catless downpipes, H&R sport springs, Koni yellow shocks...E-85
COSMETICS: CF performance diffuser, CF kidney grille, CF wrapped interior, CF 335i, CF license plate frame, 12mm BMS spacers front/rear, Rear fenders rolled, Mtec white LED angel eyes, GP Thunder white fogs, Clear reflectors, Blacked out roundels