Got my Borla UEL yesterday, installed last night. Zero fitment issues, zero issues with sealing (I even reused all the stock gaskets), zero issues with warping. Actually I did the 'ruler test' like someone earlier in this thread and the engine block flanges were perfectly even, there was a very minor difference in the flange that bolts to the overpipe, but even with a reused stock gasket it sealed just fine.
My car is otherwise stock, and this really makes a big difference with the torque dip (based on initial completely non-scientific butt dyno findings). The sound is noticeable through the stock exhaust, but very subtle. Around 3-4k RPM it seems to be the most 'boxer rumble'-ish, then above that you really can't tell (though it does sound a bit different)
In any case, I am very satisfied, and just felt like I should put my positive experience out there. More review, perhaps a video, etc once I've gotten through finals week.
