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2016-2021 Civic Turbocharger Upgrade - W1

2016-2021 Civic Turbocharger Upgrade - W1

Take advantage of some savings and opt for a rebuilt W1 Journal Bearing turbo with 100% brand new CHRAs that carry our full limited lifetime warranty with them
Use of 5W-30 engine oil recommended.
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In modern engines like those found in the 10th generation Honda Civic the turbocharger is the heart and breath of power and performance.

The turbocharger is a sort of bottleneck in the engine in which all air must enter and exit. Therefore, a performance turbocharger is one of the most potent upgrades you can make for your Honda Civic SI or base model. We’ve removed the guesswork, fab work, and pain of a custom turbo kit and created a performance turbocharger that installs and fits like OE, but performs far above.

Check out the video below to see the W1 Performance Turbocharger for the 2016+ Honda Civic REDEFINING THE AFTERMARKET.

Click here to watch the original product launch for the W1 turbo

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New for ‘24 is a Ball Bearing version of the W1. That’s right, we never stop iterating and coming out with improvements for the CivicX community and this version is our latest push to offer the most complete line-up of drop-in turbos for the L15 powered Sedans, Coupes, and Hatches.

So, you now have the choice to buy your W1 with a ceramic ball bearing package (CHRA) which is ideal for high boost applications offering more durability for those pushing the limits on the street or if you intend to hit the track and set some blazing lap times. The BB package utilizes high-grade ceramic ball bearings to increase spool and reliability while delivering smooth power delivery all the way through to redline.

27won redefine design subheadline

The design of the 27WON W1 turbo started brand new from scratch with CAD models. Every component of the turbocharger was considered during design for performance. The 27WON W1 Honda Civic Turbocharger is about performance, fitment, and reliability without compromise.

drop in fitment subheadline

Specifically designed to fit like the original Honda (OE) turbocharger, the W1 Turbo Kit works with any and all performance parts designed for fitment on the OE turbo. Easy installation and no need to discard or modify the supporting performance parts you’ve already invested in.

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A 59% larger compressor wheel is used to increase peak flow and boost capacity. CNC machined from forged aluminum for superior strength, our wheel also features extended tip technology and increased blade height.

Boost pressure capacity of the turbocharger is currently limited to not exceed ~28psi through 6500rpm due to MAP sensor limitations. A larger unit and MAP sensor suggested for those looking to make more than 27psi.

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A 61% larger turbine wheel is used for increased overall engine efficiency and power potential. Our 9-blade design was selected to reduce boost lag common when upgrading a turbocharger while still providing increased flow and power all the way to the engine redline.

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Redefining doesn’t stop at the turbo itself. Each 27WON Turbocharger comes with all the necessary oil and coolant lines, hardware, and everything else required for installation. No need to worry about runs to the local parts store to get this turbo installed. This is a complete "Drop-In" turbocharger kit.

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The 27WON W1 Turbocharger is built from 100% new performance components; therefore there is no core charge, no delays and no extra down time for your Civic Si, hatchback, or sedan.

New castings for the compressor and turbine housings along with a larger CHRA take the W1 Turbo above and beyond what a reworked OE turbo could ever be.

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Showing a true drop-in comparison (Journal Bearing option shown here), we see an un-tuned power increase of +18wHP and wTQ carrying strong to redline. Following this, a tune optimized for the W1 Turbo nets a total of +42wHP.

Carrying power to redline was the #1 goal for the W1 turbo without significantly effecting low end torque. With this new power curve, peak torque hits 500rpm later and horsepower carries to redline providing a total 500rpm extra engine RPM past the OE 6500rpm redline.

For stock block cars moving the peak torque higher in the RPM range helps reduce the chance of catastrophic engine failure due to excessive force on the connecting rods and pistons.

E85 ethanol results subheadline

Showing a true drop-in comparison with E85 fuel, we see an un-tuned power increase of +52wHP and +2wTQ. Following this, a tune optimized for the W1 Turbo nets a total of +65wHP and +18wTQ.

The L15 found in the CivicX loves boost and octane, which is why we saw a much larger increase in power with the addition of ethanol over 91 Octane gasoline.

performance CHRA housing subheadline

Designing the W1 Turbocharger from scratch allowed us to utilize a larger performance CHRA (center housing rotating assembly). This is important because this allows us the use of larger bearings which will handle the increased stress of high boost and the physically larger wheels. Adding a larger turbine shaft along with improving the cooling capacity of the CHRA helps create a performance turbocharger that can make you real power and do so reliably for you Turbo Honda Civic.

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We know the OE downpipe to turbo studs are a real pain in the A** so we are including new studs and crimp nuts for easy installation. You are getting the full package and nothing less.

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  • Looking for an aftermarket turbo solution, but on a budget? Consider one of our refreshed and rebuilt W1 Journal Bearing turbos. They’ve been gone through by the experts here and have 100% brand new CHRAs (Center Housing Rotating Assemblies). They carry the same lifetime warranty as all of our other turbos so you know they’ll perform
  • 5W-30 engine oil recommended post install
  • Do not exceed 27psi operating boost pressure

Be sure to read about our journey on how we brought you the first and only true drop-in turbocharger upgrade for the CivicX. Click the links below to read more.

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Installing Your Honda Civic Turbocharger Upgrade




Best mod I’ve done to whip Hands down !! You want that power well here you have it ! Im currently FBO , clutchmasters and E85 and man this is epic dramatic game changer ! A must buy ! That boost uff !
Best upgrade for my 2018 Honda Civic.
Great turbo. Great exhaust and Rear motor mount!!! This combination gives you the feel and sound as if your driving a true race car. But yet the smooth ride you need while just cruising on down the road!
You can tell as soon as you open the box that this thing is well made. A true drop in big turbo. The time spent on the craftsmanship and instructions are second to none. Detailed install instructions with photos with everything you need to know, Vincent and the team are awesome and respond promptly. Definitely a customer for life!!
Best mod for the 10th gen period. Love the feel and power of my car now. I highly recommend this turbo.
I have nothing but great things to say about the W1 turbo for the 10th Gen Civic. I pre-ordered it, had a buddy install it and have been very happy with it ever since. Lag is not bad, full boost comes on hard. The quality of this product is second to none. One of the best upgrades I have bought for my car. Great job with R&D and giving a great product @27Won Team.
Hands down best upgrade for your 10th gen! Install instructions were easy to follow and a big help. Huge power gains and when you pop the hood you still have a stock look. I would and do highly recommend the W1 to anyone thinking about buying.
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All 2016+ Honda Civic 1.5T equipped models including SI, RS, and International versions
No core charge required
Can work with any combination of intake, downpipe, and intercooler