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Old 12-28-2017, 12:57 PM   #15
zef
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Originally Posted by mk6'12gti View Post
The quality control on Hpas ko4 is awful.
That's the first time I've ever heard that.

I've also read a few people have noted the waste gate is weak from the factory. It's easily swapped out to fit your needs/application.
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Old 12-28-2017, 01:11 PM   #16
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I don't think the HPA K04 "Hybrid" is a hybrid in the traditional sense, and won't make more power over a regular K04. The F23T is a hybrid with different internals.
It's absolute crap is what it is. It's cheaply made, poor quality control, and every shop I've spoken with hates dealing with them, or won't deal with the m at all.
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Old 12-28-2017, 10:53 PM   #17
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When did you buy your HPA turbo? They used to sell Borg Warner K04 kits, but switched to a K04 "hybrid" a little while back.
I got it Jan '14....I don't think it's a BW K04, pretty sure it's one of their 'hybrids'.

One of the outcomes of the tinkling contest with FrankenTurbo was HPA marketing their turbo as a 'hybrid' as opposed to a BW K04.....I say this because this change happened when the tinkling contest ended.
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Old 12-28-2017, 10:59 PM   #18
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Imo the actual Borg Warner k04 will be the most reliable, tried and true version that can be used. The hybrids will put out more power, but at what cost?
Cost of chasing ghosts if shit goes wrong........which is why one needs competent shop who knows the product, or strong DIY skills.
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Old 12-29-2017, 12:52 AM   #19
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I’m on almost 20k miles in just over a year of ownership and no issues.

Their supposedly from the same company that assembles BW turbos or same internals. Something like that. It’s not a hybrid like the f23t or tte420 are. They call it a hybrid bc it is a k04 but cast/made to fit our cars. Unlike apr modifying a BW turbo, they have a company that made the housing the way we need it.

It should work with any companies k04 software as there’s nothing else really special about it. Atleast not in a sense of making more power than another k04.
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Old 12-29-2017, 09:42 AM   #20
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Iím on almost 20k miles in just over a year of ownership and no issues.

Their supposedly from the same company that assembles BW turbos or same internals. Something like that. Itís not a hybrid like the f23t or tte420 are. They call it a hybrid bc it is a k04 but cast/made to fit our cars. Unlike apr modifying a BW turbo, they have a company that made the housing the way we need it.

It should work with any companies k04 software as thereís nothing else really special about it. Atleast not in a sense of making more power than another k04.
I wouldn't doubt HPA as a company, but hard to work out the bugs with a year or 2 vs how many years of the k04 that BW has? Might get a lemon once in a while, but for the most part, they are pretty bulletproof.
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Old 12-30-2017, 01:15 AM   #21
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I spoke with United Motorsport who knew exactly what they were doing with a HPA K04. Said theyíve had pretty good results. Thatís what the final convincing piece was for me to pull the trigger.


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Old 12-31-2017, 11:20 AM   #22
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I spoke with United Motorsport who knew exactly what they were doing with a HPA K04. Said theyíve had pretty good results. Thatís what the final convincing piece was for me to pull the trigger.


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You have dyno numbers for the UM tune and HPA turbo?
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Old 01-02-2018, 01:15 AM   #23
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You have dyno numbers for the UM tune and HPA turbo?


Have not dynoíd my car as of yet.


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Old 01-02-2018, 10:58 AM   #24
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HPA K04

So, I've had this turbo for about a year and it has ran wonderfully.

However, In July i ran a boost leak test on the turbo for the hell of it and i have a small leak coming from HPA's Turbo Outlet V-Band Clamp assembly. I've been through hell ever since replacing parts they've given me, replacing o rings etc, nothing fixes it. It's a poorly designed clamp assembly with poorly machined parts. I seem to hit max boost fine and car seems to run great. However, i can hear the leak when i get on it full throttle.

Currently waiting on more parts from HPA which has been over 2 months now. A new turbo replaced under warranty has been mentioned by HPA, but im hoping it doesn't come down to that. I would avoid HPA's Turbo kit just for the horrible clamp design.
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Old 01-03-2018, 12:49 PM   #25
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However, In July i ran a boost leak test on the turbo for the hell of it and i have a small leak coming from HPA's Turbo Outlet V-Band Clamp assembly.
I had the same problem. I wasn't aware of this until my car started throwing the P1335 code and going into limp mode. Drop it off at a VW shop, and they fixed my boost leaks everywhere, including this which you mention. I thought it was odd, and thought it was a shit install job.

But now leaks are fixed, and car runs strong. Wish I could go BT, but too much mileage on the car..........
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Old 01-03-2018, 12:51 PM   #26
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I had the same problem. I wasn't aware of this until my car started throwing the P1335 code and going into limp mode. Drop it off at a VW shop, and they fixed my boost leaks everywhere, including this which you mention. I thought it was odd, and thought it was a shit install job.

But now leaks are fixed, and car runs strong. Wish I could go BT, but too much mileage on the car..........
What exactly did they do to fix it? And did HPA cover the labor cost? It's good to find another person with this issue, HPA was dumbfounded about it

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Old 01-03-2018, 01:49 PM   #27
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I think the HPA is cheaper than the BW k04, but it's always better to go with a BW. More power needed? Add a forge WGA, p&p, and have the wheel clipped. All imo.
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Old 01-03-2018, 07:55 PM   #28
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What exactly did they do to fix it? And did HPA cover the labor cost? It's good to find another person with this issue, HPA was dumbfounded about it

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Never contacted HPA about this.

The intake tract was disassembled, cleaned, new gaskets/clamps where needed, and reassembled.

New DV installed, and GoFastBits DV+ removed.

Was just under $400 for parts/labor.

Like I mentioned, I thought the outlet leak was due to shit install job, since same place fucked up the install of my IC and blew me off with a simple 'welcome to world of VW gremlins'.....thus another shop found the problem right away, no gasket in the intake connector that attaches to the turbo outlet pipe. Bullshit like that is why I shrugged it all off. But now I know where to look if problems should come back.
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