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  • VWBoost member hits 473 wheel horsepower in his MKVI Jetta GLI with modified APR Stage 3+ kit and USP Motorsports upgraded LPFP

    Congratulations to VWBoost member pattrick02 whose MKVI Jetta GLI put down a very impressive 473 wheel horsepower on a dynojet dyno. This car has a modified APR Stage 3+ upgrade but really it is the fueling upgrades that make this amount of power possible. The HPFP (high pressure fuel pump) and LPFP (low pressure fuel pump) system were both modified by USP Motorsports in order to give the fuel system enough of a bump to support this amount of power.


    The upgrades to the LPFP system were to add a second in-tank low pressure pump. The high pressure pump was modified to flow more efficiently. The other changes are a new tune and MS109 race gas. The head is still stock so there is still a little more to extract from this setup and cracking 500 wheel certainly is feasible.

    Very nice work @pattrick02 !


    This article was originally published in forum thread: MK6 GLI - Updated Dyno Numbers - 473WHP started by pattrick02 View original post
    Comments 75 Comments
    1. fastgti69's Avatar
      fastgti69 -
      Apr stage 3+?
    1. pattrick02's Avatar
      pattrick02 -
      Click here to enlarge Originally Posted by fastgti69 Click here to enlarge
      Apr stage 3+?
      yeah, stage 3+ kit with a few tweaks
    1. Sticky's Avatar
      Sticky -
      Dude, give me the full specs rundown and I'll front page this.
    1. pattrick02's Avatar
      pattrick02 -
      Click here to enlarge Originally Posted by Sticky Click here to enlarge
      Dude, give me the full specs rundown and I'll front page this.
      sounds good. It's basically the same exact set-up I had before on the 400+ and 426whp runs. The only changes were an upgraded low pressure fuel system, which consists of a second in-tank lpfp that turns on only at 20+ psi, which is when the system would before start running low on volume. The high pressure fuel pump was also modified to flow more efficiently. The only other changes were more custom tuning and VP racing MS109 race gas.

      I'm still on the stock head. That should be going on hopefully within the next month or two. I know, it's taken way, way longer than expected. Next plans will be a custom intake manifold that will hopefully go in along with the head, and afterwards a custom t3 exhaust manifold with a bigger turbo! One thing at a time though.
    1. Sticky's Avatar
      Sticky -
      Click here to enlarge Originally Posted by pattrick02 Click here to enlarge
      It's basically the same exact set-up I had before on the 400+ and 426whp runs.
      I know but I view so many cars and setups I don't keep track of all. If I just get a rundown it would be great, let me see what I can put together with what you gave me.
    1. Sticky's Avatar
      Sticky -
      Congratulations to VWBoost member pattrick02 whose MKVI Jetta GLI put down a very impressive 473 wheel horsepower on a dynojet dyno. This car has a modified APR Stage 3+ upgrade but really it is the fueling upgrades that make this amount of power possible. The HPFP (high pressure fuel pump) and LPFP (low pressure fuel pump) system were both modified by USP Motorsports in order to give the fuel system enough of a bump to support this amount of power.

      Click here to enlarge

      The upgrades to the LPFP system were to add a second in-tank low pressure pump. The high pressure pump was modified to flow more efficiently. The other changes are a new tune and MS109 race gas. The head is still stock so there is still a little more to extract from this setup and cracking 500 wheel certainly is feasible.

      Very nice work @pattrick02!

    1. pattrick02's Avatar
      pattrick02 -
      Click here to enlarge Originally Posted by Sticky Click here to enlarge
      I know but I view so many cars and setups I don't keep track of all. If I just get a rundown it would be great, let me see what I can put together with what you gave me.
      Yeah, I totally understand! Thanks for that feature! Basically the car has an APR stage 3+ kit. Motor has IE rods, Calico rod bearings, and still stock pistons. Internals were all balanced. ARP head studs are in, and I'm still waiting on my ported head with Ferrea +1mm Valve kit. So for now I'm still running the stock head. Other than that, full 3" catless turboback exhaust, custom built by USP, BSH mounts all around, BSH catch can, BSH throttle body pipe, APR carbonio intake, AWE Turbo outlet pipe, Southbend stage 4 clutch, Peloquin differential, Forge Short shifter, and other supporting mods.
    1. Sticky's Avatar
      Sticky -
      Click here to enlarge Originally Posted by pattrick02 Click here to enlarge
      Yeah, I totally understand! Thanks for that feature! Basically the car has an APR stage 3+ kit. Motor has IE rods, Calico rod bearings, and still stock pistons. Internals were all balanced. ARP head studs are in, and I'm still waiting on my ported head with Ferrea +1mm Valve kit. So for now I'm still running the stock head. Other than that, full 3" catless turboback exhaust, custom built by USP, BSH mounts all around, BSH catch can, BSH throttle body pipe, APR carbonio intake, AWE Turbo outlet pipe, Southbend stage 4 clutch, Peloquin differential, Forge Short shifter, and other supporting mods.
      Thank you, absolutely awesome results.

      So head is next or is fueling still the main issue?
    1. pattrick02's Avatar
      pattrick02 -
      Click here to enlarge Originally Posted by Sticky Click here to enlarge
      Thank you, absolutely awesome results.

      So head is next or is fueling still the main issue?

      Thanks buddy.

      Fueling for now is not an issue. The main issue right now is the turbo. We can't get much more flow out of it. And if we turn the boost up any more, it's just asking for things to start breaking. It can't breath much more than what it's at anyways.

      Next up is probably an intake manifold that I'm having built right now. After that's in, we will dyno to see the results, and then install the head shortly afterwards to see how that affects everything. So next in line right now are intake manifold and head.
    1. chrisisnapping's Avatar
      chrisisnapping -
      This is awesome Patrick. I honestly can't wait to see these TSI's in the 550whp realm and let's hope one of these gets into the 10s. I heard you broke your upgraded axles though right?

      any plans on making the jump from t25 to t3 or t4 with a new turbo? You're still running APR tuning right? or did you also go to eurodyne?
    1. Sticky's Avatar
      Sticky -
      Click here to enlarge Originally Posted by pattrick02 Click here to enlarge
      Thanks buddy.

      Fueling for now is not an issue. The main issue right now is the turbo. We can't get much more flow out of it. And if we turn the boost up any more, it's just asking for things to start breaking. It can't breath much more than what it's at anyways.

      Next up is probably an intake manifold that I'm having built right now. After that's in, we will dyno to see the results, and then install the head shortly afterwards to see how that affects everything. So next in line right now are intake manifold and head.
      Can't you go to a bigger turbo?

      How much more can the current fuel system support?
    1. pattrick02's Avatar
      pattrick02 -
      Click here to enlarge Originally Posted by chrisisnapping Click here to enlarge
      This is awesome Patrick. I honestly can't wait to see these TSI's in the 550whp realm and let's hope one of these gets into the 10s. I heard you broke your upgraded axles though right?

      any plans on making the jump from t25 to t3 or t4 with a new turbo? You're still running APR tuning right? or did you also go to eurodyne?
      Thanks man. I can't wait either. I know I'll get there. It's just a matter of time. 10's would be amazing! I did..I broke my second axle. First time I broke a tranny flange, then I broke a stock axle, then I just broke Raxle's "race" axle last week. I am going a completely different route now. Raxle is making me a new axle, similar to the one being run on USP's/Nick's 650+whp MK4 GLI. If that doesn't hold up, nothing will. Nick has only broken one in the last two years, and he's making plenty more power than I am, on slicks, and twin disk clutch.

      Yes, I'm still on APR programming. And will definitely make a jump to probably t3, but after I do as much possible with this current turbo. After I get the head installed and see what it does, then I will definitely start looking into a bigger turbo. Well, I've been looking into it, but I want to see what I can do with this set up first.

      Click here to enlarge Originally Posted by Sticky Click here to enlarge
      Can't you go to a bigger turbo?

      How much more can the current fuel system support?
      I can, and I probably will. I'm just trying to see what I can do with my current set-up first, and get every bit out of it before I go bigger turbo and custom exhaust manifold, etc...Plus, I want to enjoy my car a little bit, lol. It's always apart and being worked on. The current fuel system should be good for at least another 100whp, so that's okay for now. When it comes time, we'll see it's true limit.

      Here are some quick updates:

      these came in Monday:
      Click here to enlarge
      Click here to enlarge
      And then I redrilled them yesterday:
      Click here to enlarge
      Click here to enlarge
      Click here to enlarge
      I'm still waiting on the drag slicks to come in, but they should be here today. They have to be! I'm planning on going to the track tonight if we can get it all back together.
      So then I weighed the Centerline's:
      Click here to enlarge
      I thought they'd be lighter, but they're still really light for their size and for being a street/race wheel.
      And I sent the broken Raxle axle back, and got a different, new set in today. If these don't hold up, nothing will:
      Click here to enlarge
      We also have some TT hubs and other spare parts that were ordered, just in case something doesn't fit, or if we need to make it fit. Bottom line is, it's going in one way or another.
      And I ordered another pair of RPF1 to go with the pair I already have:
      Click here to enlarge
      These will be my daily wheels for now. They are so light. I fall in love with them every time I look at them and pick them up. :laugh:
      The only thing I'm waiting on now are the Slicks, which should be in today. I also ordered a set of Hankook Ventus RS-3's for the RPF1's, which will hopefully be here today. I want them on before Fixx!

      And this was going to be a surprise, but I might as well show it:

      Click here to enlarge

      Click here to enlarge

      Click here to enlarge
    1. chrisisnapping's Avatar
      chrisisnapping -
      holy $#@! Pat that looks awesome, only thing it's missing is some meth nozzles Click here to enlarge. here's hoping you can take SteelCurtain's record tonight.

      and as always -- Great work, and thanks for keeping this forum updated with your progress, I love mk6, but it's nice seeing things like this instead of vendor wars and "which downpipe to get" threads.
    1. bigdnno98's Avatar
      bigdnno98 -
      Very impressive. I wish we had an intake mani option like that.
    1. chrisisnapping's Avatar
      chrisisnapping -
      Click here to enlarge Originally Posted by bigdnno98 Click here to enlarge
      Very impressive. I wish we had an intake mani option like that.
      technically i wouldn't say it's an option, yet at least not for the general public. This was definitely a custom piece. But hopefully if it has proven gains it can be brought to market.
    1. bigdnno98's Avatar
      bigdnno98 -
      What exactly was done to the HPFP to make it more "efficient"?
    1. fastgti69's Avatar
      fastgti69 -
      Damn dude, this is a MAJOR build beyond stage 3+. Props man. How are you going to tune for the intake mani without flappers? Wasn't that the main issue with the HEP manifolds. Either way i'm sure you're gonna get around that. GTX series? Precision makes some nice turbos Click here to enlarge
    1. pattrick02's Avatar
      pattrick02 -
      Click here to enlarge Originally Posted by chrisisnapping Click here to enlarge
      holy $#@! Pat that looks awesome, only thing it's missing is some meth nozzles Click here to enlarge. here's hoping you can take SteelCurtain's record tonight.

      and as always -- Great work, and thanks for keeping this forum updated with your progress, I love mk6, but it's nice seeing things like this instead of vendor wars and "which downpipe to get" threads.
      I think I'm going to stay away from meth. Just more headaches that I don't want to deal with, lol. At least for now.

      And thanks!!!!

      So quick update. I didn't beat steelcuratin's record yet, but I will real soon. Then again, he's DSG. But I did hit 11's. Here's my timeslip from FixxFest this past weekend. I also trapped higher. I had an easy 122-123 and mid 11 if I hadn't short shifted third in the last run.



      Click here to enlarge Originally Posted by chrisisnapping Click here to enlarge
      technically i wouldn't say it's an option, yet at least not for the general public. This was definitely a custom piece. But hopefully if it has proven gains it can be brought to market.
      yeah, that's true. it was a custom manifold, but usp is working on a prodcution unit.

      Click here to enlarge Originally Posted by bigdnno98 Click here to enlarge
      What exactly was done to the HPFP to make it more "efficient"?
      if only i knew, lol. they keep it a secret, and won't tell anyone. all i know is that logs checked out good, and more fuel is coming in, haha.

      Click here to enlarge Originally Posted by fastgti69 Click here to enlarge
      Damn dude, this is a MAJOR build beyond stage 3+. Props man. How are you going to tune for the intake mani without flappers? Wasn't that the main issue with the HEP manifolds. Either way i'm sure you're gonna get around that. GTX series? Precision makes some nice turbos Click here to enlarge

      lol. thanks dude. Going to do a custom tune. We're still working on it. I'll figure it out soon enough though.

      Hmmm, That's what I'm thinking...either gtx3582r, or precision...and right now, i'm really leaning towards a precision..maybe a 6262? Click here to enlarge
    1. fastgti69's Avatar
      fastgti69 -
      Click here to enlarge Originally Posted by pattrick02 Click here to enlarge
      lol. thanks dude. Going to do a custom tune. We're still working on it. I'll figure it out soon enough though.

      Hmmm, That's what I'm thinking...either gtx3582r, or precision...and right now, i'm really leaning towards a precision..maybe a 6262? Click here to enlarge
      Yea, I'd think a custom tune. Not with APR right? Unitronic or Eurodyne Maestro? Unless APR is willing to do something with you LOL.

      Woahh really? the Gtx3582 is gonna be huge lag, how much power are you aiming for? Maybe the gtx3576? That can still flow enough for you to him 550whp on race at least. The 6262 is an amazing turbo, just can't compare with a GTX. The only thing I'd compare to a GTX is either the EFR or a Comp tripple ball bearing Billet CHRA turbo. http://www.compturbo.com/products/ct2billet/ct2_6065

    1. chrisisnapping's Avatar
      chrisisnapping -
      eurodyne will be interesting, and really fun if/when you decide to go with meth.

      Though I know the guy with the EFR turbo (and the weird name I don't feel like spelling correctly) went from uni to eurodyne and ended up making less power but that was with RAI tuning it, i'm sure USP is probably a bit better on that front.