I recently came across a 2012 sti sedan catback. Overall it looked very similar to the oem 3.6r midpipe in term of bends so I figured I'd give it a try.Main differences are resonator shape and pipe diameter . Oem 3.6r is 50mm after resonator ( not sure on the size if the LGT )and Sti is 60mm.Front flange was cut and rotated. 10-1/2" piece of 2-1/2" tubing was added between flange and resonator to get rid of the sti offset.Bolts right up to oem cans with no trouble
Overall about an hour worth of work.I also mocked up sti quad cans but will have to do a little more fab to clear factory cut outs.
Driving impressions after install are good. Slight elevation in tone without any drone.I should have the rear cans installed by next week.
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