After some indecision, back & forth the new pipes are on! AWE downpipes finally installed -- no more check engine lights and no more confusing the ECU, pure free-flow. Then did swap for almost new Milltek catbacks, modded the valence accordingly, and voila: the car gives something in between a purr and a gentle growl. Deep sound, not obtrusive, no drone at cruise rpm (which is not necessarily all that low an rpm ).
Heading out for road trip for several days as soon as these are posted below. Still have the gutted downpipes (OEM -- cleared out completely), but those piggies are going to market.
Have great weekend, all!
wofman
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