CTS Turbo is proud to announce the release of the BOSS500 for GEN1 EA888 TSI owners.
After a long and tedious R&D process, our engineers have finalized this turbo upgrade kit to create a modular package that is capable of producing upwards of 600hp and has the long-term reliability.
At the heart of our aptly named BOSS (Bolt-On Speed Solution), TSI upgrade kit uses our own CHRA, it is installed into a CTS proprietary exhaust housing. The housing is carefully cast and machined in house to be compatible with any exhaust downpipe and the scroll area was designed to be approximately 0.63AR. This result is very good boost response and eliminates any possible restriction.
Don't be fooled by other manufacturers putting a larger turbo into a stock housing. It is not beneficial, and that is why we made our own!
Custom oil/water lines complete this kit to offer a simple installation, simple tuning, and problem-free operation.
Proprietary custom molded silicon hoses connect the turbo to your turbo outlet pipe and intake.
Currently, the BOSS turbo upgrade is only compatible with CTS Turbo intake. However, other intakes could be made to work - unfortunately, we cannot provide guidance for installing other manufacturer's intakes.
You can use a stock, CTS Turbo or other billet diverters/blow-off valve. Only OEM or CTS turbo outlet pipe is compatible at this time.
DOES NOT FIT RIGHT-HAND DRIVEProduct contents:
- CTS Turbo Gen2 GTX 50/67 dual ball-bearing CHRA with 8 blade billet compressor wheel
- CTS Turbo exhaust housing
- CTS Turbo wastegate bracket
- CTS Turbo 4-ply silicon couplers
- CTS Turbo oil lines
- CTS Turbo water lines
- Hardware required for installation
Product features:
-400hp to 500hp capable (depending on fueling and engine mods)
- Direct bolt-on without any modifications to the car
- Compatible with CTS Turbo intake and factory DV or CTS DV/BOV
- Compatible with factory or CTS Turbo turbo outlet pipe
- Compatible with any exhaust downpipe
- Tuning available for stock fueling and for upgraded fueling from United Motorsport and Eurodyne
BOSS 600 in Seat Aleta 100-200km/h
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Workshop installation available
Fast 1-3 days dispatch on in-stock items
Shipping from only $11.90
Click & collect available
Dealer-level MTA workshop
Expert tuning, upgrades, and servicing
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Harrys Euro
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4.8
Based on 146 Google reviews as of 01/05/2026
Shanijah Taylor
Just wanted to share some love to Harry's euro and their team! Bought parts for my r32 and gti, they never disappoint. Love being part of the euro community in an ever so dominant jdm culture in New Zealand. Looking forward to bringing an rs3 in for tuning :)
Greg Davies
Great to have parts for my Range Rover so readily available in nz. Fast delivery and awesome quality products. Thanks guys!
Nick Ko
I took my BMW to get the downpipe installed. Harry's Euro has done an excellent job. I'm very satisfied with the quality of their work. The staffs are very nice. Highly recommended. 10/10
Sebastian Ramirez
I've been a loyal customer of Harry's Euro since 2017, and I can confidently say Scott and his team are the best in the game. Not only do they consistently offer the best prices, but the service is always top-notch. Scott is honest, transparent, and always takes the time to explain what’s going on with my car. Whether it's routine maintenance, unexpected repairs, or upgrades, I always know my car is in the best hands. Highly recommend to anyone looking for a reliable, expert mechanic!
Andrew Atkinson
Used Harry's Euro for years owning a Mk6R and now a Mk5 R32. Amazing service and delivery! R32 kit arrived today with some extra goodies! Pleasure to deal with the team!
Mark Barber
Hands down the best Euro shop in Auckland. They've looked after 2 builds of mine, and the parts, service and expertise has been top notch.
Marc Graham
Harry's Euros delivered platinum service from start to finish. The quality of the products is excellent, and the install experience was smooth and professional. If you want a lower cost acceleration boost ask Scott about a Pedal Box! Huge difference and very simple to use.
Quinn Ashby
Got some basic servicing and a Stage 2 transmission tune done today to match the ECU tune. The team was really helpful with information, communication via email, fit me in quickly, and offered fair, industry standard pricing for a specialised shop. Highly recommend, and I'll definitely be back!
Hayden Lawrence
Great service. Needed a replacement driver's side mirror glass for our old GTI. Harry's Euro had it in stock for a good price and shipped it next day. Very pleased with the transaction and will happily recommend and use them again.
SladeDaSlide
Been Working with Harry's Euro for almost 3 years now and I can highly recommend any auto-work or performance upgrades to be done by these guys. I've had my previous car and my current done by the team cheers to Scott and the boys for the work 🍻
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