MAP WRX Catted Downpipe Rev 4 | 2015-2021 Subaru WRX MT (WRX-4G-DPC-REV4)
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2015-2021 Subaru WRX MT Rev 4 Catted Downpipe by MAPerformance
When the turbo compresses exhaust gas, it's forced through a narrow downpipe on its way through the exhaust system. This narrow pipe can create lots of turbulence. This air pressure needs to go somewhere, and the factory 2015-2021 Subaru WRX downpipe is a huge bottleneck, limiting flow and robbing power. An upgraded downpipe will allow this spent exhaust gas a quicker outlet to the exhaust system, increasing horsepower and torque through the entire power band!
Features
- 3.5 bell mouth to 3 design reduces exhaust restrictions
- Made from 304 stainless steel for superior corrosion resistance and enhanced appearance
- Mandrel-bent tubing throughout optimizes exhaust flow
- Stainless steel flex section reduces stress from engine movement increasing longevity
- Utilizes OEM ground strap
- Designed to be used with your OEM turbo outlet gasket
- 304 stainless steel CNC turbo outlet flange
- 100% Made in the USA
Please Note: This will not fit CVT models. This product may be used with either a factory cat-back exhaust system or an aftermarket exhaust system. Please specify via the dropdown before ordering.
May also work with other catbacks, please contact us with any questions!
Applications
- 2015 - 2021 Subaru WRX
Benefits
- Improves Exhaust flow leaving the turbo.
- Won't Rust! Made from High-quality stainless
- Proven to add serious HP!
What's in the Box?
- 1 - MAP WRX Downpipe
- 1 - 3 V-band Clamp
- 1 - M6 Cap Screw
- 1 - M6 Nut
- 1 - 3 2 Bolt Gasket
- 2 - M10x1.25x40 Bolts
- 2 - M10x1.25 Flange Nuts
- OPTIONAL - Grimmspeed Flange Adapter for Stock Catback
References
1.) All MAPerformance in-house fabricated parts include a Limited Lifetime Warranty for the Original Purchaser. This warranty only applies to the original purchaser and is non-transferrable. If the product fails it would need to be determined by MAPerformance that it is due to manufacturing defects in materials or workmanship. The purchaser will be responsible for sending the product back, after contacting MAPerformance and reporting the failure. Further instructions will be provided by MAPerformance.
2.) This does not cover normal wear and tear. Improper use, modification, or abuse voids this warranty. MAPerformance will not be held responsible for additional costs due to the failure of a product (cost of sale, towing, labor, etc.). Warranty claims must be submitted to MAPerformance for review. Products that are factory coated must adhere to the break in process. Only products coated by MAPerformance will be covered. Products will not be covered if wrapped.
3.) MAPerformance “Limited Lifetime” Warranty does not apply to all products. Kits, packages, bundles, or any non fabricated parts and products by MAPerformance are not warrantied. Engines and engine assemblies are not warrantied. Cast components are warrantied for 3 years from purchase date.
This works so well with my MAP header and Borla cat back. Love the performance from it as well.
I am extremely impressed with the quality and fitment of the MAP j-pipe. My boost builds much quicker and holds higher, my tone is more aggressive and deep, and my only question is why I didn't make this purchase sooner. No CEL thanks to the GESI cat. This is a phenomenal piece of hardware!
If you’re on the fence of getting this DP
Just do yourself a favor and get it. The welds are high quality, the fitment was perfect it made installing an absolute breeze. I got lucky and my turbo studs and bolts came off easily with some overnight PB blaster. I loved how it came with all the hardware you need to install.
Absolutely love how it sounds! Has a nice growl when you take off and you can hear the turbo better.
I personally didn’t have any fitment issues. Better yet I don’t even have a CEL either! Couldn’t be happier.
Fit great!
Got this a few months back for my 16' WRX and think I have a good feel at this point. I had to replace an old catted ETS that kept throwing a P0137 that prevented me from registering after I went stock to take care of some of that high end power and sound I lost. This does much better than my original pipe, but I do get an occasional P0420 that I don't think I can do anything about, and at this point, it is what it is. Feels like I got most of the power back from that terrible stock pipe, but I notice it's not as loud, which is probably a good thing at my age. You can definitely feel the difference with the more pronounced cat, but the restrictions are much less. Overall it feels close to what I had before, but feels like I'm missing a little bit of the power, although it could just be in my head or maybe I need a re-tune, which my tuner said was unnecessary. For the price I would recommend given the DP options we have when you can't tune any emission codes out created from the DP. Shipping was quick and MAP is always a go to when looking for new parts as they have some of the best customer service and prices around.