Extreme Turbo Systems

ETS 08-16 Mitsubishi Evo X GESI Test Pipe

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  • Regular price $680.00

SKU: 100-10-EXH-101

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The ETS Evolution X High Flow Cat Test Pipe is a direct replacement of the factory catalytic pipe. This has been dyno tested for a 10-15whp increase over the factory catalytic pipe. Works with factory downpipe and factory exhaust system as well as any other aftermarket exhaust system that mounts in the factory location.


  • Includes O2 bung.
  • Direct bolt on - Bolts to factory location.
  • 3.0" Diameter
  • 304 Stainless steel construction
  • 304 Stainless steel 2-bolt flanges.
  • Includes gaskets and bolts.
  • Designed for maximum flow and performance



  • Significantly lowers back pressure for maximum flow and performance.
  • Throaty exhaust note
  • Hand built in the USA.


Designed To Perform!

For years, our emissions solutions have been addressing the needs of the high performance exhaust market. Our GEN1 line of high flow catalytic converters offer purpose-built catalytic converter solutions for high performance applications up to 2016 model year vehicles with minimal or no loss in horsepower.

  • GEN1 series supports vehicles up to 2016 model year
  • EPA Compliant - for use on OBD1/OBD2 Vehicles (1996 to 2016)
  • 304 Series Stainless Steel construction throughout
  • Double-Lock technology ensures substrate is locked in place
  • Proprietary precious metal wash coat delivers consistent emissions reduction
  • Ideal for forced induction and capable of withstanding up to 1,700F/ 925C


Customer Reviews

Based on 28 reviews
carlos nieto
Gesi test pipe

Sounds amazing you can hear the pops and bangs just with the cat, but once pair with the ets open dump down pipe and the ets v3 extreme you got a dream sound.

ETS 08-16 Mitsubishi Evo X GESI Test Pipe

I already had a high flow cat. Kept throwing check engine code. This took that away and also doesn't stink after driving it. Awesome product!

Tyler Ellis

We love it! Over stock it's a big game changer. Pair with the ets down pipe and cat back the system sounds amazing. Very aggressive and the performance is very noticeable.

Robert M.
Nice piece.

Great quality as expected from ETS. I bought the 6” resonated test-pipe, paired with a Tomei titanium cat-back. The drone for daily driving was too much, you could feel it in the seat and backseat passengers had a hard time taking part in a conversation. I just got the ETS V3 quiet, and paired with the test pipe it’s perfect for the street and daily driving.

GESI High Flow Cat

I bought this ETS GESI High Flow Cat to replace a Magnaflow test pipe. After the install, I got a tune and passed the emission without any problems. I noticed a diminished smell of rich exhaust in the cabin and also decreased soot on my rear bumper! I also get the occasional crackle and pop sounds!

Luis Ortiz-Rodriguez
ETS catless Test Pipe

I am highly impressed and satisfied with this product. The sound it lets off with the combination of my Catback is amazing, I absolutely love it. The quality of the welds and the pipe alone is tremendous. 10/10 highly recommend



Ask a Question
  • Will this work with a Tomei Cat Back Exhaust?

    Yes it will. 

  • Should this work with an ams downpipe or would I need to purchase a ets Downpipe?

    This will work with the AMS downpipe as well as any other downpipe that terminates in the stock location.

  • Hi, just purchased the GESI. Is the cat their High output rates for 500whp, or is it their Ultra High Output rated for 800?

    We use the ultra high output option.

  • Would the GESI HFC pair with your V3 exhaust?

    Yup!  We designed our GESI HFC to be a direct replacement, so it will work with any downpipe/catback combiniation that mimics the factory design.

  • What are the difference between the 3 of them?

    The GESI version has a GESI High Flow Catalytic converter in it which is for emmisions. 

    The regular catted version just has a 200 cell high flow catalytic converter. 

    The Resonated option includes a 3" bottle style resonator to help eliminate drone and offer a slight reduction in noise.

    The straight through option is just that. Straight through test pipe.

  • Does this item come with a new gasket, or does it have to be purchased separately?

    Gaskets and everything you need to bolt it on the car.

  • Would this pass in California emissions?

    These are not CARB approved.

  • Hi there! Was wondering what the difference was exactly between your HFC and your GESI HFC. Thanks!

    Gesi claims to get the car through emissions testing while having no effect on flow at all. It is just a higher quality catalytic converter

  • Does this Test Pipe work on a Mitsubishi Ralliart?

    Yes, this works on the Evo X and the Ralliart. 

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