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    Thread: GT28rs - Dyno Results

    1. 07-25-2005 03:54 AM #1
      I completed my GT28rs turbo upgrade and after a week of tuning and swapping up to 55lb injectors on dyno day I got the following results:

      Mods include:

      gt28rs turbo and all the fittings
      BMC intake
      VR6 maf housing
      3" custom exhaust
      3" downpipe
      55lb injectors
      front mount intercooler
      4 bar fuel pressure regulator
      forge diverter valve
      revo big turbo software
      ... and more

      Pretty happy with the following results at approx 20 psi

      Note - the 440 injectors had the car running dangerously lean and I couldnt break 284 whp with them.


    2. Senior Member bluebora20v's Avatar
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      07-25-2005 03:59 AM #2
      nice. breaking 300 whp is sweet

    3. Administrator BHB's Avatar
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      07-25-2005 03:59 AM #3
      yeah no joke
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    4. 07-25-2005 05:43 AM #4
      now lemme see your car man!

    5. 07-25-2005 06:02 AM #5
      lol... the car is still somewhat of a sleeper. My intention was to make it fast first, then make it look sweet.

      It's only got 1 weeks worth of tuning done so I am hoping to see even better numbers over the next few months.

      350whp would be nice, but probably unrealistic... but ya never know!

      PS - Should give PG Performance a big hand for working their assess off getting this together and Shawn at Kinetic Motorsports for tuning this thing so well in a short time.


      Modified by kevin11 at 3:06 AM 7-25-2005


      Modified by kevin11 at 3:08 AM 7-25-2005


    6. 07-25-2005 07:22 AM #6
      remind me what your car looks like again?

    7. Senior Member CapeGLS's Avatar
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      07-25-2005 07:50 AM #7
      Not bad.... I am taking it you have the .86 trim!
      Can't wait to get mine on the rollers (but gotta work out all of the kinks)
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    8. 07-25-2005 08:20 AM #8
      Nice numbers, although I'm a little confused as to where it's all coming from. Maybe I'm showing my ignorance here, but if you have REVO stage 2 on a K03s and you're pushing 20psi, you don't get anywhere near that horsepower. I know its a bigger turbo and whatnot, but do the injectors and such give you that much extra hp at a similar level of boost?

    9. Member GTI_2.0T's Avatar
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      07-25-2005 08:26 AM #9
      Quote, originally posted by EPWolfy18T »
      I know its a bigger turbo and whatnot, but do the injectors and such give you that much extra hp at a similar level of boost?


      The same boost pressure does equal the same amount of air flow with a larger turbo. A GT28rs can move a much, much larger volume of air at a given pressure than a K03. The larger injectors are needed to provide enough fuel to match this larger volume.

      Jason • Now 2.0T / 400 • Then 1.8T / 2.0
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    10. 07-25-2005 08:40 AM #10
      first off there is no way you need that much injector unless the software is plain terrible.

      second whats with the killer lag? do you have a huge exhaust leak?


    11. 07-25-2005 09:27 AM #11
      Quote, originally posted by tim18t@teambagtag »
      first off there is no way you need that much injector unless the software is plain terrible.

      second whats with the killer lag? do you have a huge exhaust leak?

      seriously, 55# injectors and a 4bar is waaaaaaaaaaaaaaaaaaaaaaaaaay too much fuel.

    12. Banned V84LNCH's Avatar
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      07-25-2005 09:31 AM #12
      i don't think this is laggy at all. 175whp at 4500rpm. thats not to bad. i didn't catch the ar side, but assuming it's an .86 ar.

      i'm with tim though, 440's will get you there and way mor with a 28rs. your tune must be way off to run bigger injectors.


    13. 07-25-2005 09:38 AM #13
      i see 250 at 4500 so granted i have a smaller turbo but the spool shouldnt be that far off on his set up

    14. Banned V84LNCH's Avatar
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      07-25-2005 09:44 AM #14
      you're also not running the same crap sw he is. and your sw can make the best of 380's.

    15. Member VDUBRACER187's Avatar
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      07-25-2005 09:57 AM #15
      nice #'s... you just need better software so the power is there through most of the rpm range

    16. 07-25-2005 02:53 PM #16
      Quote, originally posted by tim18t@teambagtag »
      first off there is no way you need that much injector unless the software is plain terrible.

      second whats with the killer lag? do you have a huge exhaust leak?

      I know the injector size is huge - maybe its the software. The car did near 20 pulls during the week when it was being dyno tuned, and couldnt get the lean spots out by tuning alone. The A/F looks nice now.

      The lag isnt that bad at all - it could improve a little, but I think its reasonable for this turbo.


    17. 07-25-2005 10:28 PM #17
      Quote, originally posted by JettaGL_1.8T »
      The same boost pressure does equal the same amount of air flow with a larger turbo. A GT28rs can move a much, much larger volume of air at a given pressure than a K03. The larger injectors are needed to provide enough fuel to match this larger volume.

      Ah, everything makes a lot more sense now - I wasn't thinking this morning before work.


    18. 07-25-2005 10:29 PM #18
      niceee

    19. 07-25-2005 11:02 PM #19
      no LSD or clutch??!?

    20. 07-25-2005 11:16 PM #20
      nice numbaz

    21. 07-25-2005 11:33 PM #21
      nice job... im with the guys about the software bein off you shouldnt need injectors that big but awsome job

    22. 07-26-2005 02:24 AM #22
      Stage 4 clutch - 12lb flywheel - no lsd

    23. Member Vwagen18t's Avatar
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      07-26-2005 02:33 AM #23
      cool

      i think once you get the fueling and tuning ironed out you can squeek out atleast another 10-15hp

      Volkswagen........

    24. 07-26-2005 03:05 AM #24
      Sweet

    25. 07-26-2005 03:12 AM #25
      now lemme see your car man!

      Here's a 2 month old picture - it now has a 2" drop and a front mount intercooler. Like I said, its pretty much a sleeper.


    26. 07-26-2005 03:25 AM #26
      oops... was answering a question thats already been answered for me...


      Modified by kevin11 at 12:35 AM 7-26-2005

    27. 07-26-2005 03:44 AM #27
      what kinda FMI do you have???

    28. 07-26-2005 04:03 AM #28

    29. Banned mtiede's Avatar
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      07-26-2005 04:03 AM #29




      That is soooo sweet. Good work!


    30. Banned mtiede's Avatar
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      07-26-2005 04:05 AM #30
      what kind of gas mileage are you gettin?

    31. 07-26-2005 04:10 AM #31
      Quote, originally posted by mtiede »
      what kind of gas mileage are you gettin?

      I'm really not sure about the gas mileage yet - I havent calculated it out. Plus, I am driving the car alot harder than normal to expose any weak spots since the turbo upgrade.

      After spending approx. $15k on mods in the last few months, my fuel economy is the least of my worries...


    32. Banned mtiede's Avatar
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      07-26-2005 04:13 AM #32
      Quote, originally posted by kevin11 »

      I'm really not sure about the gas mileage yet - I havent calculated it out. Plus, I am driving the car alot harder than normal to expose any weak spots since the turbo upgrade.

      After spending approx. $15k on mods in the last few months, my fuel economy is the least of my worries...


      Yeah I was just curious because I wanted to know how much of a difference the gas mileage is on a stock 1.8t vs. a big turbo 1.8t. That question has always burned in my head for comparison reasons.

      Did you post this in the 1.8t forum? I am sure that there are some more people that can lend their insight to anything.


      Modified by mtiede at 1:15 AM 7-26-2005


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