Extreme Turbo Systems

ETS 15+ WRX MAF Extension Harness

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  • Regular price $45.00

PART NUMBER: 200-40-INT-007

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This extension harness allows you to run the stock wiring for our 15+ WRX Intake. No splicing or cutting. Plug and play connection.

Customer Reviews

Based on 4 reviews
C. Murphy.
Does the job!

Works better than Cobb extension harness and fixed idle issues I was experiencing. After troubleshooting for boost/vacuum leaks, faulty sensors, and clogged catalytic converters, this piece solved the ‘phantom’ issue.

Car would have a rising and falling idle between 600rpm-1200rpm, then stalled out. Mechanics replaced MAF but the problem persisted. No CEL was present. After replacing this MAF harness all idle issues went away.

Thank you

Mark Santos
No check engine light/works as it should 👍

Installed 1000 miles ago with no issues. Super fast shipping and love the free stickers too 😎

Omar Arellano

ETS 15+ WRX MAF Extension Harness

Eric jimenez
FA20 MAF extension order

Great quality fixed my iusse



Ask a Question
  • Hi, will this work for a 19 sti. If not, is there one available that does? Thanks

    This is for a WRX. Not an STI.

  • I purchased an ETS cold air intake for my 2017 WRX and it’s connection is weak and my car is struggling to hold an idle and throwing a MAF code. Is there a warranty on the extension harness I can use?

    We offer a warranty on all of our products to the original purchaser. Give me a call and we can go over the warranty process.

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