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MAP Stainless Steel CompGate40 O2 Eliminator Downpipe for Evo X MAP EVOX-CG40-O2E
MAP Stainless Steel CompGate40 O2 Eliminator Downpipe for Evo X MAP EVOX-CG40-O2E

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Our Price: $469.99

Product Code: MAP EVOX-CG40-O2E


MAP Stainless Steel CompGate40 O2 Eliminator Downpipe for Evo X MAP EVOX-CG40-O2E

At MAP our goal is to offer the highest quality products available at a price that anyone can afford. This integrated O2 housing downpipe, or O2 eliminator as they are often referred to, does just that by removing some of the largest restrictions in the factory exhaust system for significant horsepower gains throughout the power band! It also features a Turbosmart CompGate40 external wastegate (sold separately) for improved boost control when the factory internal wastegate configuration isn't able to do the job (larger stock frame turbochargers at high boost levels).

To preserve spool characteristics we recommend running the factory internal wastegate in conjunction with this product, please contact us for additional information.

Features / Benefits

  • Full 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.
  • Includes stainless steel turbo outlet gasket (not shown).
  • 100% Made in the USA.

Turbosmart wastegate sold separately. Please note, the dump tube you receive will be "clearanced" which cannot be seen in the picture as fitment of this product relies on a very small window.


(inquire prior to purchase for cost of added options as they are not included)

Advanced Ceramic Coating

This black ceramic coating increases exhaust velocity and reduces under hood temperatures for improved performance and appearance.

Second O2 Bung

Add an additional O2 sensor bung for your wideband sensor, etc.

Flange Options

(inquire prior to purchase for cost of Contour flange as item listed is for standard flange only)

We offer this product with your choice of turbine outlet flange, standard or 3D contoured. The standard flange has been performing flawlessly for the majority of our customers since this product's inception in 2009, but there have been a handful of customers that experienced boost creep when trying to run lower boost levels (less than 25psi) with upgraded turbochargers. In general if you are swapping out your existing o2 housing for this upgraded unit and plan to run 25+ psi you shouldn't have an issue with the standard flange. If, however, you just performed a significant upgrade (complete engine build, turbocharger upgrade, etc.) and would prefer to begin the tuning process below 25psi or if you ultimately plan to run less than 25psi we recommend the 3D contoured option to ensure you have complete boost control.

Standard Flange 3D Contoured Flange

Warranty Information

At Modern Automotive Performance we strive to offer only the highest quality products and stand behind our work. All MAP brand products will include a one year warranty from the date of purchase. In the event of a failure from a manufacturing defect we will either repair or replace the product at no cost.


This product is intended for off road use only. As sound level and emissions laws vary based on location please consult your local authorities for additional information.

Why Choose MAP Products?

If you are looking for some of the best fabrication solutions, or products for your vehicle, Modern Automotive Performance has what you're looking for. Our in house fabricators have over 15 years of experience in the import and fabrication industry, and have made everything from simple brackets, to mass produced products, to all out one-off turbo systems, and utilize only the highest quality of materials, tooling, consumables, and processes to bring our customers the best fabricated products and services available at industry fair prices. Whether you're looking to have a blow off valve flange welded and installed, purchase one of the products in our ever expanding MAP product line, build a fully prepped race car, or anything in between, we have what you're looking for. Whether you have a lightly modded daily driver, a weekend warrior, or a tube chassis race car, the fabricators and staff at MAPerformance will turn your dreams and ideas, into the products and power that no one else can deliver.

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