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  • #1

    vnt 17 overboostt

    so i have a 01 jetta tdi and just finished installing a vnt 17. the problem i am having is that its boosting really high, i know the turbo is waste gated at 22 psi, but im getting spikes off my 30psi gauge and sustained at around 28 psi. i have tried adjusting the wastage rod, and all it does is make it boost slower to that same amount of boost. i have thested the wastegate with a vacuum pump and it is opening completely at 18 inches of merc.
    the other mods i have are a 3.5'' downpipe back exhaust, pp520s, 11 mm pump and a egr delete
    any insight would be great thanks
    Tags: None
  • #2
    Re: vnt 17 overboostt

    What chip you running with this? Most would turn back and say to go back to who ever chipped your car and ask them.
    Ben
    2016 Ram 3500 Laramie
    2000 Jetta TDi, Dead and removing parts
    2005 Passat Wagon TDi, 310,000 km's and counting, BSM delete done....Trans died going to replace
    Her's
    2016 Toyota Highlander XLE Pearl White

    Comment

    • #3
      Re: vnt 17 overboostt

      You got a boost valve installed? Those usually help with overboost issues too.
      2001 Jetta TDI GL Silver
      Malone Tune stage 5+ ,VNT17-22Turbo, OMI, PP Race Pipe, PD 150 Intake, 2 1/2" Straight back exhaust, no mufflers, 2 1/2" downpipe straight no Cat, Race 520 Injectors, 11mm Fuel Pump, Lift Pump, EGR Delete mod,DC Stage IV Clutch, Michelin X-Ice 2's, 26 lb/s of boost alll day long, Smoking like a train!

      Comment

      • #4
        Re: vnt 17 overboostt

        Personally I would never play with anything on the turbo, that is just asking for trouble. By the sounds of it you need a boost valve and some proper programing.
        Name: Brent
        His: '04 TDI Golf Mods: None If it's smoken it ain't broken
        Family: '15 Jetta Sportwagon
        Fun car: '92 Blue Karmann Crabby Cabby Mods: Coils, front and rear swaybars, LED interior lights and some other old things.

        Comment

        • #5
          Re: vnt 17 overboostt

          Originally posted by Stonewall View Post
          Personally I would never play with anything on the turbo, that is just asking for trouble. By the sounds of it you need a boost valve and some proper programing.
          Agree.. boostvalve is a must. Don't adjust turbo. I had the same thing on my TDI for a day or two until my boost valve showed up. Got it from http://boostvalve.com/.
          Last edited by stefan; 08-02-2010, 09:41 PM.
          Stefan
          -> '19 Deep Black Pearl Alltrack
          -> '05 Urban Grey Passat Wagon TDI.
          -> Past rides: '14 Allroad, 06 Mazda5, '98 Jetta K2, '01 Jetta TDI, '91 Mazda B2200, '81 Toyota Cressida
          -> FutuRe Ride...??!

          Comment

          • #6
            Re: vnt 17 overboostt

            Boost valve and retune. Maybe moniter it with vcds if you have access.

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            • #7
              Re: vnt 17 overboostt

              No access to vcds as of right now. But if anyone
              In red deer area would like to go out for beers and bring their laptop along, I would be totally down. As for the boost controller i don't know why, bu
              It totally slipped my mind. I made mu way onto boost controller.com and amIn the process of orderingOne. I'm just to lazy to get up and get my credit card right now. As for the tune, I am kinda waiting on funding to get a unitronic put in...

              Comment

              • #8
                Re: vnt 17 overboostt

                Originally posted by BlueLagoon View Post
                I'm just to lazy to get up and get my credit card right now.

                a new turbo will hurt more.
                Stefan
                -> '19 Deep Black Pearl Alltrack
                -> '05 Urban Grey Passat Wagon TDI.
                -> Past rides: '14 Allroad, 06 Mazda5, '98 Jetta K2, '01 Jetta TDI, '91 Mazda B2200, '81 Toyota Cressida
                -> FutuRe Ride...??!

                Comment

                • #9
                  Re: vnt 17 overboostt

                  So let me see if I got this right. You're running a bigger turbo, bigger nozzels, bigger fuel pump on a stock chip with no boost valve, no boost gauge, no egt gauge and you haven't run vcds to adjust your injection quantity because it's probably out of wack with the bigger pump. You say your too lazy to get a credit card? You're missing half of the required components to run that setup. Are you still running a regular intake pipe to the turbo too? If you're too lazy to do it right, why even bother asking for help?
                  2001 Jetta TDI GL Silver
                  Malone Tune stage 5+ ,VNT17-22Turbo, OMI, PP Race Pipe, PD 150 Intake, 2 1/2" Straight back exhaust, no mufflers, 2 1/2" downpipe straight no Cat, Race 520 Injectors, 11mm Fuel Pump, Lift Pump, EGR Delete mod,DC Stage IV Clutch, Michelin X-Ice 2's, 26 lb/s of boost alll day long, Smoking like a train!

                  Comment

                  • #10
                    Re: vnt 17 overboostt

                    Originally posted by dJ View Post
                    So let me see if I got this right. You're running a bigger turbo, bigger nozzels, bigger fuel pump on a stock chip with no boost valve, no boost gauge, no egt gauge and you haven't run vcds to adjust your injection quantity because it's probably out of wack with the bigger pump. You say your too lazy to get a credit card? You're missing half of the required components to run that setup. Are you still running a regular intake pipe to the turbo too? If you're too lazy to do it right, why even bother asking for help?
                    probably thinks the attitude sounds cool??????????
                    put.......put.......

                    .... ... .. .

                    Comment

                    • #11
                      Re: vnt 17 overboostt

                      Originally posted by Satnam View Post
                      probably thinks the attitude sounds cool??????????
                      easy boys, easy! it was like 2 am and i was in bed, i didnt feel like walking out to my car to get my wallet to order a boost valve at that very second! not trying to sound like a douche
                      the iq was adjusted when the pump was installed. i do have boost and egt gauges installed, thats how i knew the turbo is over boosting. as for the list of modifications they were pretty much installed in order of what i was told by someone i considered to be in the know. i put nozzles in when i first got the car. i stumbled upon a 11mm pump for next to free, and just waited to have it installed when i did my t belt a month after i got the car. as for the turbo, i bitched the stock vnt 15 and figured there ws no point buying a stock one to wreck down the road again.
                      im sorry if this question seemed rather daft, but in the future instead of making all these assumptions maybe a few questions would be in order first.
                      i only came on the forum to get insight from people that know more about this stuff than i do. sorry if i inconvenienced your life in any way

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                      • #12
                        Re: vnt 17 overboostt

                        At any rate, with a chip and nozzles, you will spike like crazy with no boost valve. Get that in there, and then I'm sure guys here can help with the finer tuning details.

                        and you're lazy comment did sound a little absurd.... Ya, it was taken out of context, but you have to admit that it lessened how serious you're tuning plans the way that it reads now.

                        If you are serious about your tuning, you will find a lot of good advice here.
                        Last edited by stefan; 08-04-2010, 03:53 PM.
                        Stefan
                        -> '19 Deep Black Pearl Alltrack
                        -> '05 Urban Grey Passat Wagon TDI.
                        -> Past rides: '14 Allroad, 06 Mazda5, '98 Jetta K2, '01 Jetta TDI, '91 Mazda B2200, '81 Toyota Cressida
                        -> FutuRe Ride...??!

                        Comment

                        • #13
                          Re: vnt 17 overboostt

                          Originally posted by stefan View Post
                          At any rate, with a chip and nozzles, you will spike like crazy with no boost valve. Get that in there, and then I'm sure guys here can help with the finer tuning details.

                          and you're lazy comment did sound a little absurd.... Ya, it was taken out of context, but you have to admit that it lessened how serious you're tuning plans the way that it reads now.

                          If you are serious about your tuning, you will find a lot of good advice here.
                          Do you have any segeations about which brand or where to buy a good one from, I am having trouble with boostcontrollet.com?
                          Thanks kyle

                          Comment

                          • #14
                            Re: vnt 17 overboostt

                            Concept1 probably has some.
                            2001 Jetta TDI GL Silver
                            Malone Tune stage 5+ ,VNT17-22Turbo, OMI, PP Race Pipe, PD 150 Intake, 2 1/2" Straight back exhaust, no mufflers, 2 1/2" downpipe straight no Cat, Race 520 Injectors, 11mm Fuel Pump, Lift Pump, EGR Delete mod,DC Stage IV Clutch, Michelin X-Ice 2's, 26 lb/s of boost alll day long, Smoking like a train!

                            Comment

                            • #15
                              Re: vnt 17 overboostt

                              i didnt see a chip in that list of mods . ....... ... what chip are you running . you cant do all of this without some sort of software
                              sigpic

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