So, while a catback exhaust may not add much HP to a relatively stock build, they certainly help to bring out a little (or a lot) of that signature rumble we’ve all come to love. trying to keep under 350tq on the stock block. TOP EXHAUSTS FOR YOUR 2015+ SUBARU WRX/STi The subie rumble is undeniably one of the defining traits of the WRX/STi. When I get the car tuned next month, build should consist of: Cobb flex fuel + dw300c, IBR full TGV delete, IBR EGR delete, GS EBCS, GS intake, GS J pipe and GS TMIC(tentatively) with the Nameless catback. Just curious what your guys' thoughts are? Has anyone modded both ends and left the midpipe stock? Seems pretty common to just to the J pipe and leave the whole catback stock also. I definitely want the J pipe to open up the back end and the axelback part for sound quality, but im starting to wonder if that ~$600 for the midpipe would be better spent saving towards a FMIC or a built block, or even just some new wheels. Hey all, So ive been wanting to pull the trigger on a new exhaust setup (Grimmspeed catted J pipe + Nameless 5in mufflers w/ 4in doublewall tips) and almost did it last night, but i was watching an install video of the catback and was shocked how similar the two pieces of the midpipe are to the stock unit. So ive been wanting to pull the trigger on a new exhaust setup (Grimmspeed catted J pipe + Nameless 5in mufflers w/ 4in doublewall tips) and almost did it last night, but i was watching an install video of the catback and was shocked how similar the two pieces of the midpipe are to the stock unit.
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