Installed AA dps last night, what a PITA, They came out in about two hours, then The back one took about one hour to get The clamp around The dp, The front one went in 10 minutes. In total it was about 8 hours with Cheap tools, without unbolting The steering rack. Sound is about The same at idle, The engine is a bit louder, with some throttle it sounds meaner, turbos seem to spool faster too.
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08 335i E90, AW, jb4 and dci, 20% tint, ER CP,synapse bov ,supreme power perches, cyba tips, BMS WW meth kit, M3 front, BMS catch can, mtech AE, AA downpipes, Big tom IC, kickdown disabled, 15 ohm mod.