2015-2021 Subaru STI Downpipe Upgrade By MAPerformance | Catted/Gesi Options

I decided to go directly to the MAP Stage 2 Setup (Intake + Catted Down Pipe). I never ran the intake without the downpipe, so I am not sure how much of the power increases to give to credit the intake alone, however, the combo is amazing! So my my setup, MAP Intake & Down Pipe, MAP Stage 2 93 Octane tune, Q300 Invidia Catback, GFB Recirculation Valve and IAG Street Series AOS, in a 2019 STI. The huge power & torque increases are in the Low to Mid range, with more power up high as well. I can believe I am getting close to 333HP to wheels they advertise! For an everyday driver the car is amazing now. I run the Cobb access port all the time just to monitor engine knock, DAM, Air Fuel, and intake temp. DAM has never moved, occasional feedback knock to about -1.4, but maybe once in 1/2 hour of driving so far. Intake is about 5 degrees over ambient when you are on throttle, so its truly picking up the coolest air in the engine compartment. I get some occasional small pops form the exhaust which I actually like and a little louder overall for the exhaust but no highway drone. Boost level hits 20 psig on most hard pulls, it gets there much faster than before giving you more power through a wider RPM range. I though the intake sounds would be too much, but they are very cool. It does not make noise until you get into boost, so perfect for me as it quiet while cruising. The fitment on the downpipe was spot on as well. If you want to go to stage 2 + Intake without a paying for a pro-tune this is the way to go for sure!

One of the single best purchases I have made for my 2017 STI. The welds are immaculate the bends are perfect. The heat shield may need some alterations to fit, but does still fit. Wouldn't change a thing 3 out of 5 stars. (Joke).

I have a 2017 sti and have purchased a maperformance stage one kit plus just got done installing their downpipe. Well I'm more then impressed with the quality of their products. Thank you for helping me bring my car to life. One thing I would recommend if your going to be installing maperformance downpipe is to pick up an aftermarket heat shield.

Perfect figment, product is amazingly made and with the tune the car came to life very happy. Thanks to Kevin and Eric for helping with my questions.

what a b**** to put this in but well worth the headache, support flange was bent on order but. I was able to tie it down and straighten it out but still doesn't line up for me correctly to securely bolt it down, so I zip tied it until im ready to adjust everything .but well worth the work shoulda bought the stage 2 package right off the bat, huge difference from my catless pipe huge gains car runs amazing now . I apperciate you guys sending me out the pipe quickly thank you all for everything amazing quality and craftsmanship I believe my build will be mostly MAperformace in the future.