Turbo Lab’s ko3 ko4 ko6 50mm x 61mm billet compressor wheel upgrade.
Turbo Lab now offers a 50mm x 61mm billet compressor wheel upgrade for ko3/ko4/k06 turbo chargers. The craftsmanship of the ko3 turbo upgrade is intense because it involve very precise machine skills to make this turbo build possible. The new inlet of the compressor housing becomes a massive 2.375″ outside diameter which is flared out for more air flow and better spool capability.
This turbo upgrade also utilizes the biggest turbine available for the k series turbo which is the 44.5 mm x 50 mm ko4/ko6 turbine. We can also offer turbine clipping for this turbo to help with even more flow capability. If you have a ko4 or ko6 from factory your turbo would just need a simple compressor upgrade to build what you see here. Keep in mind not all of the compressor housings are the same, if your wondering why this compressor housing doesn’t look like yours, the reason why is because its probably not the same housing, but as long as your turbo is a ko3-k06 we can offer this 50mm x 61mm compressor upgrade.
The most common cars that run the Borg Warner k series turbos are the audi a4, voltswagen jetta and gti, chevy cobalt, pontiac sky, and mazda 3. We are proud to now offer this turbo, though we have not gotten any result of what it will do, we can predict by its size that it should be able to 320-350whp of airflow. We are even more excited to upgrade the twin turbos on an audi a6 next to see what we can get out of them. With two of these turbo upgrades on an audi a6 2.7 v6, we are expecting to see 500-600 hp of air flow.
I’m installing a plate flipper, you can find more info at trydeal com
I want to know a little more info about how this works. Do I send in my K04 and so on. Also how much will it cost.
Thanks for your time
Sorry for the delay on getting back to you on time. I saw your payment today.
I saw the power rating says up to 350whp. Is that with the upgrade? The twin scroll k04 from the cobalt ss is already capable of that from the factory. Im not quite understanding the power gains. Care to teach?
I just put the 350 whp estimate as for all ko4 upgrades. We offer ko3 to ko4 upgrades, so that why we put 350 whp, because we are talking in terms of upgrading a ko3 to a ko4 turbo. However we can offer a 50mm compressor wheel upgrade for the ko4. There is a ko4 with a 45mm compressor wheel, and a ko6 with a 46mm compressor wheel, we can upgrade them to the 50mm x 62mm billet wheel. We dont have any results of these yet, but i have built a few of these.
You guys currently have my k04 for my mazdaspeed 3. I think you’re putting the 50mm x 62mm billet wheel in mine. When I get it in ill do a couple of dyno pull and send them to you to see the results
That would be awesome. we plan to ship it back to you on monday.
messaged you guys earlier today. looking to get this mod done on my k03. just looking for a final price and an idea on turn around time. thanks.
How do i go about buying the k03 upgrade for my 1.8t? Email me a link please… thanks
I would need to know more information about what car you are trying to put this turbo on. Email us Here.
Can you please email me with some details of how can I upgrade my ko3 turbo to KO4 with pricing please .. im so interested
Fr***********@ao*.com
Sm**********@li**.com
I have a Audi B7 A4 with stock K03. Stage 1+ = tune, upgraded drop in air filter, forge DV, highflow cat. I am interested in what you can do to the turbo and what the cost would be. Thank you
Could this be done without the velocity stack end, and with an actual turbine inlet tip?(2.5″/whatever o/d?)
And what is the cost with a core?
Can you please email me with some details of how can I upgrade my ko3 turbo to KO4 with pricing please .. im so interested
al*********@gm***.com
I use vw golf EA113 engine and k04 turbo.I want to buy k04 upgrade k06 wheel complete turbo or better spec.Thank u.
I have a 2006 Mazdaspeed 6. My factory K04 has blown seals. I’m looking to upgrade my stock K04 and rebuild. Can you help? If so, what pricing?
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Please email me at
ex***********@gm***.com
I have a borg warner k04-0064 in an audi a4. It needs a rebuild kit and I want the 50mm upgrade. Could you please email me at
sm******@gm***.Com
I already have rods and all supporting mods including S3 injectors, upgraded hpfp, ttrs lpfp, 600hp fmic, r8 coils, 3 inch down pipe, water meth to make 400+ whp which I think a turbo that size is capable of doing and would be glad to post results on your site if I can get this done. Thanks. Hope I hear from you.
Hi,
I am interested in doing this to my MKV GTI FSI K03 turbo. Can you email me a quote for this?
Hello I have a 2003 Audi a4 1.8t Quattro & I have been looking for a upgrade on my K03 please contact me at
ma*************@gm***.com
. I am really interested in doing this upgrade with my turbo ! Hope to hear from you , Thank you.
I enjoy the article
I have a 2004 Audi A4 with the stock KO3, whats the total price on this upgrade and the turn around time? Thanks.
For pricing information please feel free to message our facebook page or email us.
i was wondering if i sent my Turbo from my mini cooper s how long does it take for turn around time .
I was able to find good advice from your blog articles.