Close

  • 532 wheel horsepower GTI? No problem, CTS GTX3071 Turbo kit on a MKVI GTI tuned by GIAC puts down impressive power

    Great results here from a MKVI Volkswagen GTI. The car features a turbo kit from the friendly Canadians over at CTS Turbo. This car was put together by E&A Autosport which is located in Israel. The CTS Turbo kit features a Garrett GTX3071 billet ball bearing turbocharger. On 93 octane fuel plus meth injection the car put down an impressive 532 horsepower to wheels in STD correction. Tuning was done by GIAC based out of Irvine, CA.

    It would be great to get more details on this car and how they addressed the fuel system as well as transmission (DSG car) but the numbers are simply incredible.

    This article was originally published in forum thread: 532 wheel horsepower GTI? No problem, CTS GTX3071 Turbo kit on a MKVI GTI tuned by GIAC puts down impressive power started by Sticky View original post
    Comments 22 Comments
    1. fastgti69's Avatar
      fastgti69 -
      Cool, really interested in their fueling mods... Could be tuned a little better, that's some horrible lag for a turbo of that size. It should be fully spooled by 4k or less, not 4.6k

      Looked on APR's site. They have a turbo kit with the same size turbo, actually not even a GTX series. The APR turbo kit should spool slower than this Giac kit. Sadly, it doesn't. It spools faster, even faster than I thought it would. 3.5k rpm full spool with that size turbo is pretty nuts.

      Attachment 34024
    1. Sticky's Avatar
      Sticky -
      Keep in mind the load on the dyno will affect spool I'm not too familiar with the one they used.
    1. fastgti69's Avatar
      fastgti69 -
      Click here to enlarge Originally Posted by Sticky Click here to enlarge
      Keep in mind the load on the dyno will affect spool I'm not too familiar with the one they used.
      You're 100% correct. That can be a big variable. It looks the like those guys in Israel are using the same type of hub dyno APR uses. Still though, you're right I guess.
    1. Tamut's Avatar
      Tamut -
      Hi,
      that dyno is the Dynapack hub dyno

      im located in Israel and live near that tuning shop.
    1. Sticky's Avatar
      Sticky -
      Click here to enlarge Originally Posted by Tamut Click here to enlarge
      Hi,
      that dyno is the Dynapack hub dyno

      im located in Israel and live near that tuning shop.
      Hello and welcome.

      Is this your car?
    1. George Smooth's Avatar
      George Smooth -
      If its got built internals they may have gone too low with the compression.
    1. chrisisnapping's Avatar
      chrisisnapping -
      Click here to enlarge Originally Posted by George Smooth Click here to enlarge
      If its got built internals they may have gone too low with the compression.
      Generally speaking these engines only need rods, and APR does vend specific pistons for these engines, so there is a small chance the compression went down, but still possible if they didn't use stock pistons.

      also just to clarify some things in this thread. TSI engine in Israel (and most of the world) are a bit different than the engines found in North American TSI engines. Notably they have different HPFP than us, their stock ones can be upgraded and even in stock form they flow much more than ours. IIRC this car has a LPFP and stock HPFP and most likely injectors. Also, I believe the ROW heads are different than ours, along with the ECU. Basing that assumption off of the fact that if we were to retrofit a ROW HPFP we would need at a minimum a new ECU and head.


      this car should have slicks on it soon and then off to the strip.
    1. chrisisnapping's Avatar
      chrisisnapping -
      Click here to enlarge Originally Posted by fastgti69 Click here to enlarge
      Cool, really interested in their fueling mods... Could be tuned a little better, that's some horrible lag for a turbo of that size. It should be fully spooled by 4k or less, not 4.6k

      Looked on APR's site. They have a turbo kit with the same size turbo, actually not even a GTX series. The APR turbo kit should spool slower than this Giac kit. Sadly, it doesn't. It spools faster, even faster than I thought it would. 3.5k rpm full spool with that size turbo is pretty nuts.

      Attachment 34024
      take their graphs in their site with a grain of salt.
      Here is one recently posted by a APR Australia running their gt30 kit


      Click here to enlarge

      And here is a state side car running race on the gt30
      Click here to enlarge


      The gtx turbo is hitting peak tq much sooner. Also, op dyno was on 98 octane
    1. fastgti69's Avatar
      fastgti69 -
      ^^^ Wish I could rep you more. Damn I have been out of the VW scene lol.
    1. George Smooth's Avatar
      George Smooth -
      Click here to enlarge Originally Posted by chrisisnapping Click here to enlarge
      Generally speaking these engines only need rods, and APR does vend specific pistons for these engines, so there is a small chance the compression went down, but still possible if they didn't use stock pistons.

      also just to clarify some things in this thread. TSI engine in Israel (and most of the world) are a bit different than the engines found in North American TSI engines. Notably they have different HPFP than us, their stock ones can be upgraded and even in stock form they flow much more than ours. IIRC this car has a LPFP and stock HPFP and most likely injectors. Also, I believe the ROW heads are different than ours, along with the ECU. Basing that assumption off of the fact that if we were to retrofit a ROW HPFP we would need at a minimum a new ECU and head.


      this car should have slicks on it soon and then off to the strip.
      Didn't know that about US HPFP. What rail pressure do the run?
    1. Tamut's Avatar
      Tamut -
      Click here to enlarge Originally Posted by Sticky Click here to enlarge
      Hello and welcome.

      Is this your car?
      Hello Sticky!

      it is a buddies car, personally i drive an E82 135i n55 car.
    1. fastgti69's Avatar
      fastgti69 -
      Click here to enlarge Originally Posted by Tamut Click here to enlarge
      Hello Sticky!

      it is a buddies car, personally i drive an E82 135i n55 car.
      Haha, perfect then. Tell your buddy to sign up and post pics and info of his car. And you should also be doing the same LOL
    1. chrisisnapping's Avatar
      chrisisnapping -
      Click here to enlarge Originally Posted by George Smooth Click here to enlarge
      Didn't know that about US HPFP. What rail pressure do the run?
      they actually run at the same pressure. Depending on load we're somewhere between 60-150bar

      A lot of it comes down to the ECU, unfortunately these engines have one of the most complex ECUs out there.
    1. George Smooth's Avatar
      George Smooth -
      Click here to enlarge Originally Posted by chrisisnapping Click here to enlarge
      they actually run at the same pressure. Depending on load we're somewhere between 60-150bar

      A lot of it comes down to the ECU, unfortunately these engines have one of the most complex ECUs out there.
      Why do you say that? The mapping looks pretty straight forward to me.
    1. chrisisnapping's Avatar
      chrisisnapping -
      Click here to enlarge Originally Posted by George Smooth Click here to enlarge
      Why do you say that? The mapping looks pretty straight forward to me.
      Not sure what your history is but have you worked with the Bosch MED17 ECU that comes in the TSI before? Every person who I know that's tuned them all says it's one of the most complicated ECUs they have tuned. I'm no tuner so I can't give first hand experience, just going off of what tuners say and give examples on.

      I mean sure there is Eurodyne that some people self tune, but not many of those out there as you can't really get into it like a flash tune from APR GIAC UNI REVO.
    1. George Smooth's Avatar
      George Smooth -
      Click here to enlarge Originally Posted by chrisisnapping Click here to enlarge
      Not sure what your history is but have you worked with the Bosch MED17 ECU that comes in the TSI before? Every person who I know that's tuned them all says it's one of the most complicated ECUs they have tuned. I'm no tuner so I can't give first hand experience, just going off of what tuners say and give examples on.

      I mean sure there is Eurodyne that some people self tune, but not many of those out there as you can't really get into it like a flash tune from APR GIAC UNI REVO.
      I have been around the tuning block a bit.

      The known drivers for the TSI are very similar to the TFSI in terms of changes that can be made. I have posted some pics below of what maps you can access (ignore the TFSI 210cv as thats what my software suite recognizes the file as). There was a challenge with ECU access over the OBD that was overcome and VW started a new tuning protection system that is sorted as well. No real challenge in my opinion just tuners and their $$$$$.

      Attachment 34172

      Attachment 34173
    1. onisyndicate's Avatar
      onisyndicate -
      hmmm would that work on the A3?
    1. chrisisnapping's Avatar
      chrisisnapping -
      Click here to enlarge Originally Posted by George Smooth Click here to enlarge
      I have been around the tuning block a bit.

      The known drivers for the TSI are very similar to the TFSI in terms of changes that can be made. I have posted some pics below of what maps you can access (ignore the TFSI 210cv as thats what my software suite recognizes the file as). There was a challenge with ECU access over the OBD that was overcome and VW started a new tuning protection system that is sorted as well. No real challenge in my opinion just tuners and their $$$$$.
      firstly, just to clarify, I wasn't challenging your knowledge on the subject, was honestly unsure of your experience with these engines. I apologize if my initial post came off as such.
      Secondly: "just tuners and their $$$$$" yes, I fully agree.

      now moving on...
      When was the OBD encryption overcome? Last I heard we are still flashing TSI engines in the MK6 by cracking open the ECU. Though as mentioned in previous posts there are some differences between the NA ECU and the ECUs found in the rest of the world (Such as your location)

      I've never seen any programming application for these ECUs (what are you using by the way?)
      So I can only go off of what I find looking around some debates between tuners. in these debates I hear them discussing things like torque models, compressor models, and turbine models with loads all intertwined making that one hurdle for tuning. i also heard there is a substantial amount of German language to work through.


      $#@! I for one would love to know if i can get a tune that limits boost and torque in first gear though.
    1. 1Zed4's Avatar
      1Zed4 -
      WTMFMF!?!? WHY DO I HAVE A BIGGER TURBO AND KEEP KETTING TOLD I CANT REACH 500!?!?!

      Well not bigger but its a gtx3076r and I has meth, all be it the tank isnt filled yet.

      End rant. That is still bad ass non the less but damn i hate him. . . sort of, more jealousy I think.
    1. Tony@VargasTurboTech's Avatar
      Tony@VargasTurboTech -
      Click here to enlarge Originally Posted by 1Zed4 Click here to enlarge
      WTMFMF!?!? WHY DO I HAVE A BIGGER TURBO AND KEEP KETTING TOLD I CANT REACH 500!?!?!

      Well not bigger but its a gtx3076r and I has meth, all be it the tank isnt filled yet.

      End rant. That is still bad ass non the less but damn i hate him. . . sort of, more jealousy I think.
      Um, GTX3076R's are proven to support 600 WHP when pushed hard, just do google search for GTx3076R 600WHP you will see a lot of dyno's with the 3076 available I would never go with a 71, you lose no spool at all as the turbine wheel stays the same, but you gain a lot more room to grow and push with the bigger comp wheel. The GTX3076R is my favorite turbo in the garrett midrange line up.