Originally Posted by DR-JEKL
AMS are one of the big boys and were designed back in 2009 for the 335i by memory. I have read the new AA is different to the old AA (which was overpriced) and the new AA has a few fitment issues by memory.
ER is damn nice but too pricey, ETS is nice but a few guys rated AMS> ETS... A mate of a mate is running AMS on his R35 GTR and that thing is a weapon
TBH like me do your own research and work out what your gut feeling is regarding what manufacturer offers the best product for the price you cant go wrong with any of them as they all outflow the oem item!
You probably know more than me tbh, i haven't researched at all.
Whats the damage for the AMS anyway?