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    Thread: Boost building in 2.0T BWA.

    1. n00b
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      2008 Octavia 2 RS
      06-05-2019 03:30 PM #1
      Hello, may someone tell me about normal boost building in those engines? (ofc with stock turbo etc.)
      I have made logs on 4th gear, IMO car has lag to about 2600RPM, but maybe is it typical for those engines? I've seen dyno graphs which had shown max torque from arround 2200RPM to X RPM but high rev (so there should be max boost pressure from 2200RPM).
      WOT starts from 17.03 time stamp of column B. Maybe it's normal boost building for this engine and I don't know it yet
      BTW. I have changed DV and spark plugs.

      https://drive.google.com/file/d/1smg...ew?usp=sharing

      Regards!

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    3. Member ROH ECHT's Avatar
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      `07 gti K04'd
      06-12-2019 03:24 AM #2
      It looks like it takes nearly 600 rpm, about 5 sec, for boost actual to meet the target boost. That is pretty much the norm'. Tough to tell if there is something off because there is no WGDC in the data and no throttle angle data...but still, it is normal. If boost takes more than 800 to 1000 rpm to meet the target level...then you should begin looking for a why.
      K04 PLAY...`07 GTI/GIAC K04 & DSG Tunes/AWE DV/AUTOTECH HPFP/TORQBYTE PM3/TTRS LPFP/S3 INJ's&fmic/RS4 fprv/FORGE fmTc, WGA & T-B HOSE/TECH.TUNING TB/BSH Eng.&Trans MOUNT's/NSP BOOST GAGE/AP Lite-PULLEY/NEUS. P-FLO&BOOST PIPES/13.2"BBK/BILSTEIN B8 DAMPERS/W.A.L.K./H&R SS SPRINGS+F&R ARB's/TSW 8X18 NURB's...ZOOM DIS! 2007 Volkswagen GTI : 12.823 @ 112.050 MPH

    4. n00b
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      2008 Octavia 2 RS
      06-16-2019 05:06 PM #3
      Great to read that it's normal! Thanks for your answer, anyway I'm gonna do again logs with TB and WGDC then post again.
      Regards!

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    6. n00b
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      2008 Octavia 2 RS
      06-21-2019 06:51 AM #4
      I've done logs of air. I think I'm a little touchy, everything about air looks ok, I could do some fuel pressure logs, but I think they will be ok also. 4th gear logs: (i know it's remapped)

      https://drive.google.com/open?id=1Iy...hzB-KtpzCzAP84

    7. Member ROH ECHT's Avatar
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      `07 gti K04'd
      06-22-2019 07:44 PM #5
      Data shows you are likely at about 235 to 240 HP. WGDC and boost all look spot on. Looks like you began the pull at 1700 rpm and by 2200 rpm the boost was near target. When boost peaks the WGDC begins to lessen by opening the WG and the data all confirms that. However, if tuned, 17 psi peak tapering to 10 psi seems off. Usually a stage 1 tune goes to near 17 or 18 psi but only tapers to 12 to 15 psi. Most stage 2 tunes go to a peak of 20 to 22 psi and taper to 17 or 18 psi. But, if on the stock oem tune...this isn't bad at all. Given the HP I see...I imagined it to be tuned though.
      Last edited by ROH ECHT; 06-22-2019 at 07:53 PM.
      K04 PLAY...`07 GTI/GIAC K04 & DSG Tunes/AWE DV/AUTOTECH HPFP/TORQBYTE PM3/TTRS LPFP/S3 INJ's&fmic/RS4 fprv/FORGE fmTc, WGA & T-B HOSE/TECH.TUNING TB/BSH Eng.&Trans MOUNT's/NSP BOOST GAGE/AP Lite-PULLEY/NEUS. P-FLO&BOOST PIPES/13.2"BBK/BILSTEIN B8 DAMPERS/W.A.L.K./H&R SS SPRINGS+F&R ARB's/TSW 8X18 NURB's...ZOOM DIS! 2007 Volkswagen GTI : 12.823 @ 112.050 MPH

    8. n00b
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      2008 Octavia 2 RS
      08-07-2019 02:11 PM #6
      Sorry for the lack of response, I was on vacation
      I noticed that when outside temperature is 24C+ it has less power, when it drops below 20C it drives better, I suppose it's caused by weak stock IC.
      Anyway, I've been thinking about converting my maps to maps from GTI ED30, and raise boost at end to 12psi as you wrote, does it make sense? I saw my ignition maps are stock, that's why I ask for advice of converting.
      Regards

    9. Member ROH ECHT's Avatar
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      `07 gti K04'd
      08-07-2019 09:32 PM #7
      Quote Originally Posted by razor1199 View Post
      Sorry for the lack of response, I was on vacation
      I noticed that when outside temperature is 24C+ it has less power, when it drops below 20C it drives better, I suppose it's caused by weak stock IC. Could be the heat...could be the tune.
      Anyway, I've been thinking about converting my maps to maps from GTI ED30, and raise boost at end to 12psi as you wrote, does it make sense? No, it doesn't make sense. The ED30 has a K04...does your Octavia? I saw my ignition maps are stock, that's why I ask for advice of converting.
      Regards
      I am still wondering which tune you have(who's tuning is it) and is it stage 1 or stage 2. Stage 1 meaning; just a stage 1 tune. Stage 2 meaning; stage 2 tune, intake, and down-pipe.
      K04 PLAY...`07 GTI/GIAC K04 & DSG Tunes/AWE DV/AUTOTECH HPFP/TORQBYTE PM3/TTRS LPFP/S3 INJ's&fmic/RS4 fprv/FORGE fmTc, WGA & T-B HOSE/TECH.TUNING TB/BSH Eng.&Trans MOUNT's/NSP BOOST GAGE/AP Lite-PULLEY/NEUS. P-FLO&BOOST PIPES/13.2"BBK/BILSTEIN B8 DAMPERS/W.A.L.K./H&R SS SPRINGS+F&R ARB's/TSW 8X18 NURB's...ZOOM DIS! 2007 Volkswagen GTI : 12.823 @ 112.050 MPH

    10. n00b
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      2008 Octavia 2 RS
      08-08-2019 01:05 AM #8
      Sorry, it's stage 1, I know meanings , just forgot to write which stage it is
      Car has been bought with this tune, I just want to make it better.
      After I wrote about copying maps from ED30 I did research, and yeah, ED30 has K04 which I didn't know about that (I've been sure it has K03), so you're right, converting doesn't make any sense.

    11. Member ROH ECHT's Avatar
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      `07 gti K04'd
      08-16-2019 08:35 PM #9
      OK, cool.
      K04 PLAY...`07 GTI/GIAC K04 & DSG Tunes/AWE DV/AUTOTECH HPFP/TORQBYTE PM3/TTRS LPFP/S3 INJ's&fmic/RS4 fprv/FORGE fmTc, WGA & T-B HOSE/TECH.TUNING TB/BSH Eng.&Trans MOUNT's/NSP BOOST GAGE/AP Lite-PULLEY/NEUS. P-FLO&BOOST PIPES/13.2"BBK/BILSTEIN B8 DAMPERS/W.A.L.K./H&R SS SPRINGS+F&R ARB's/TSW 8X18 NURB's...ZOOM DIS! 2007 Volkswagen GTI : 12.823 @ 112.050 MPH

    12. 08-27-2019 01:50 PM #10
      I believe boost actual and specified are backwards in rosstech . Specified should be smooth. Due to what is asking for and your foot or actual is the one all over the place . But it looks normal. I have upgraded piston DV with spacer to release to athmosphere and I get boost at 2700

    13. 08-27-2019 01:52 PM #11
      Quote Originally Posted by ROH ECHT View Post
      Data shows you are likely at about 235 to 240 HP. WGDC and boost all look spot on. Looks like you began the pull at 1700 rpm and by 2200 rpm the boost was near target. When boost peaks the WGDC begins to lessen by opening the WG and the data all confirms that. However, if tuned, 17 psi peak tapering to 10 psi seems off. Usually a stage 1 tune goes to near 17 or 18 psi but only tapers to 12 to 15 psi. Most stage 2 tunes go to a peak of


      20 to 22 psi and taper to 17 or 18 psi. But, if on the stock oem tune...this isn't bad at all. Given the HP I see...I imagined it to be tuned though.

      How do you read the HP on the graph?

    14. n00b
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      2008 Octavia 2 RS
      08-29-2019 02:52 PM #12
      Quote Originally Posted by atanasmk3 View Post
      How do you read the HP on the graph?
      Divide MAF by 0.8 = HP

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