6
HPA K04 users need some input
- Thread starter Yadadameans
- Start date
Francoleon91
Drag Racing Champion
actually I spoke with stratified today and they recommended an 11psi spring, since im probably gonna get their protune im gonna swap out the spring for good measure.
Francoleon91
Drag Racing Champion
anyone get a whiney sound coming from this turbo? just trying to figure out if its the turbo.
https://www.youtube.com/watch?v=wWZV-g9o2is
https://www.youtube.com/watch?v=wWZV-g9o2is
KFahey
Ready to race!
HPA K04 Leak
Franco, sound like a boost leak. I had that leak as well where the intercooler hose connects to your pancake pipe. Check that connection.
FYI, I had a new ring, offset coupler, o ring and V-band installed on my turbo. The leak sounds the same and my car randomly struggles to build boost. Sometimes ill peak properly at 25-26 PSI and sometimes it will just slowly build up to 15 PSI when i floor it. Anyone else have this leak or similar symptoms?
Franco, sound like a boost leak. I had that leak as well where the intercooler hose connects to your pancake pipe. Check that connection.
FYI, I had a new ring, offset coupler, o ring and V-band installed on my turbo. The leak sounds the same and my car randomly struggles to build boost. Sometimes ill peak properly at 25-26 PSI and sometimes it will just slowly build up to 15 PSI when i floor it. Anyone else have this leak or similar symptoms?
Francoleon91
Drag Racing Champion
I actually had mine welded like the guy a few pages back in this thread. also, ive never experienced any boost issues. i should check for leaks tho anyways.
KFahey
Ready to race!
Im talking about a different leak on yours. Not at the turbo outlet assembly but where your intercooler hose connects to your pancake pipe.
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Francoleon91
Drag Racing Champion
oh true, i did spray soapy water on that connection but didnt see any bubbles. I have to take it to a shop tho im like used to the noise now.
jeez
Ready to race!
Glad I found this thread. I get the P1335 code and it's been plaguing my car for months! I also have an HPA K04. Is this something that happens to most HPA K04 users? And all I need to do get under the car and see if it has that ring circled in red above?
I've done countless pressure tests....there's no leaks....but there is a whooshing and whining sound when under load depending on RPM. Limp mode between 2k-3k RPM. Also changed intake, PCV, DV. I'd be super pissed if this is HPA's fault as they already gave me a turbo with a crappy wastegate that I replaced with a Forge one.
I've done countless pressure tests....there's no leaks....but there is a whooshing and whining sound when under load depending on RPM. Limp mode between 2k-3k RPM. Also changed intake, PCV, DV. I'd be super pissed if this is HPA's fault as they already gave me a turbo with a crappy wastegate that I replaced with a Forge one.
zef
Drag Racing Champion
It's not an HPA turbo issue it's a stratified issue. I have the same problem and they have no clue how to fix it. Looking at going back to APR or UM.
Francoleon91
Drag Racing Champion
I have an HPA k04 and stratified protune and have never encountered this issue.
jeez
Ready to race!
I've started a thread for this:
https://www.golfmk6.com/forums/showthread.php?t=117268
franco - do you have a forge wga?
Francoleon91
Drag Racing Champion
no, I have a turbo smart WG with a kinugawa 11psi spring.
jeez
Ready to race!
Ok so for now, my assumption will be that it's the WGA, maybe the tune doesn't account for it. I need to find people with HPA K04/Forge WGA/Stratified and see if they have had this issue, or ones that have not had it. That's why I created the thread.