VespaGTS Posted April 12, 2018 Author Share Posted April 12, 2018 Thankfully it was connected but falling off. Not as bad as the photo looks. As they say "just the tip" LOL. I zip tied it. So I didn't smoke test it yet. Which line should I connect to for smoking it? Not boost pressure testing, just smoke. Link to comment Share on other sites More sharing options...
VespaGTS Posted April 12, 2018 Author Share Posted April 12, 2018 Thankfully it was connected but falling off. Not as bad as the photo looks. As they say "just the tip" LOL. I zip tied it. So I didn't smoke test it yet. Which line should I connect to for smoking it? Not boost pressure testing, just smoke. Cleared it and went for another drive. Still getting Fine Knock Learn @ -8.40 Shows up after boost goes higher. Other than that it looks better. What else should I check? Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
relative4 Posted April 12, 2018 Share Posted April 12, 2018 Thankfully it was connected but falling off. Not as bad as the photo looks. As they say "just the tip" LOL. I zip tied it. So I didn't smoke test it yet. Which line should I connect to for smoking it? Not boost pressure testing, just smoke.You can plug the inlet and smoke through the BPV vacuum line, or you can get a PVC cap and smoke through the inlet like on the boost leak test video. Link to comment Share on other sites More sharing options...
relative4 Posted April 12, 2018 Share Posted April 12, 2018 Those fuel trims are pretty good, I'm guessing you have one very small leak left. A learning view would be good to get a real picture of the knock learning. Time for an e-tune, maybe. Have you cleaned the MAF? Link to comment Share on other sites More sharing options...
VespaGTS Posted April 12, 2018 Author Share Posted April 12, 2018 Yes, MAF is cleaned. I agree about the etune. Link to comment Share on other sites More sharing options...
robburns201 Posted April 12, 2018 Share Posted April 12, 2018 I'm currently having issues with a little knock and I'm 95% sure its my aftermarket BOV...When i adjust it i get knock in different rev ranges...So I'm putting on the stocker 2maro and will report any changes... Link to comment Share on other sites More sharing options...
VespaGTS Posted April 12, 2018 Author Share Posted April 12, 2018 Those fuel trims are pretty good, I'm guessing you have one very small leak left. A learning view would be good to get a real picture of the knock learning. Time for an e-tune, maybe. Have you cleaned the MAF? I need to get my hands on a laptop and a tactrix cable to do that. Link to comment Share on other sites More sharing options...
relative4 Posted April 13, 2018 Share Posted April 13, 2018 I need to get my hands on a laptop and a tactrix cable to do that.I have a $10 VAG-COM cable that works perfectly, but the OBDLink & BtSsm is way better. Link to comment Share on other sites More sharing options...
NickCawks Posted April 13, 2018 Share Posted April 13, 2018 I need to get my hands on a laptop and a tactrix cable to do that. My local budget tuner bought a OBDII cable, a USB cable, and a, and a breakout board (ill attach a picture). Using these things he was able to make his own tactrix cable for 20 bucks. I am unsure of the details, but id be willing to bet there is a write up on nasioc or something. Link to comment Share on other sites More sharing options...
VespaGTS Posted April 13, 2018 Author Share Posted April 13, 2018 Here’s where I am so far: Boost has dropped to 16.6 Feedback knock is -7.0 Fine Knock Kearn is -8.4 AF Learn is around 11 DAM is 1.0 Both Feedback Kncok and Fine Knock only show up under hard acceleration and around 6k+ RPM. Does this sound more like a boost leak? Link to comment Share on other sites More sharing options...
Gabo Posted April 13, 2018 Share Posted April 13, 2018 Here’s where I am so far: Boost has dropped to 16.6 Feedback knock is -7.0 Fine Knock Kearn is -8.4 AF Learn is around 11 DAM is 1.0 Both Feedback Kncok and Fine Knock only show up under hard acceleration and around 6k+ RPM. Does this sound more like a boost leak? DAM is back to 1 which would indicate things are somewhat back to normal. I don't like the fine knock learn and feedback knock numbers though. Did you reset the ECU after re-hooking up the vacuum line? Link to comment Share on other sites More sharing options...
relative4 Posted April 13, 2018 Share Posted April 13, 2018 Have you smoke tested yet? Can you get your hands on an OBDLink dongle, a Tactrix cable, or a VAG-COM cable to pull a learning view? That'll give a much better picture of what's going on. Link to comment Share on other sites More sharing options...
VespaGTS Posted April 13, 2018 Author Share Posted April 13, 2018 So what's I am looking for is OBD2 to USB, a PC Laptop and software. Correct? Any advice on where to source the cable and software? I will smoke it again tonight via vacuum line on blowoff, correct? Just getting clear on best port to add smoke. I will block off intake hose. Link to comment Share on other sites More sharing options...
VespaGTS Posted April 13, 2018 Author Share Posted April 13, 2018 I will reset the ECU. I reflashed the ECU, not sure if it's the same thing? Link to comment Share on other sites More sharing options...
relative4 Posted April 13, 2018 Share Posted April 13, 2018 My favorite option: ODBLink MX or LX dongle, available via Amazon, etc. Use with BtSsm app on Android. Cheapest option: generic VAG-COM cable, like $10 on eBay. Use with RomRaider's Learning View software in Windows. Also with FreeSSM. Open source tuners' preference: Tactrix cable, also for Windows solutions. Smoke through BPV vacuum line is good. Link to comment Share on other sites More sharing options...
CapnJack Posted April 13, 2018 Share Posted April 13, 2018 Here’s where I am so far: Boost has dropped to 16.6 Feedback knock is -7.0 Fine Knock Kearn is -8.4 AF Learn is around 11 DAM is 1.0 Both Feedback Kncok and Fine Knock only show up under hard acceleration and around 6k+ RPM. Does this sound more like a boost leak? DAM is back to 1 which would indicate things are somewhat back to normal. I don't like the fine knock learn and feedback knock numbers though. Did you reset the ECU after re-hooking up the vacuum line? I would agree with the reset and see how it looks. However, for an OTS tune, you may not see much better.(This is assuming your smoke test and other checks come out ok.) The ECU is reacting to conditions it's seeing and correcting for them. The Cobb OTS tune was good, but wasn't great. Subaru's tend to be very finicky in my opinion. You can't use a brood solution on these as much as you can on other platforms. Tuning based on actual logged results will get you to where you need to be and is very important. Doing this will get your numbers closer to zero/nominal. Link to comment Share on other sites More sharing options...
NickCawks Posted April 13, 2018 Share Posted April 13, 2018 I'm unsure how helpful this is, but I just came across this knock FAQ on nasioc and thought it was an interesting read. https://forums.nasioc.com/forums/showthread.php?t=2711703 Link to comment Share on other sites More sharing options...
VespaGTS Posted April 13, 2018 Author Share Posted April 13, 2018 I'm unsure how helpful this is, but I just came across this knock FAQ on nasioc and thought it was an interesting read. https://forums.nasioc.com/forums/showthread.php?t=2711703 Yes, thank you that link is very helpful. There is a lot to learn about this car and I have been learning for the past year and still have a long way to go. Link to comment Share on other sites More sharing options...
VespaGTS Posted April 14, 2018 Author Share Posted April 14, 2018 Found the leaks. Two of them. One buried deep behind the turbo and one on the drivers side front. Same exact two bolt covered ports. Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
awesterner Posted April 14, 2018 Share Posted April 14, 2018 More leaks than the CIA! Glad it’s working out. I still get a few learn knock events occasionally on the AP, so don’t be too concerned with -2 or less occasionally, especially if you have a bit of a noisy engine. I got rid of a lot of buzzing with a new header and up pipe. My OEM up pipe only had 50k miles and half the welds were cracked! Link to comment Share on other sites More sharing options...
relative4 Posted April 14, 2018 Share Posted April 14, 2018 Wow, I don't recognize that landscape at all. Would you mind posting a pic zoomed out a bit for context? Thanks! Link to comment Share on other sites More sharing options...
VespaGTS Posted April 14, 2018 Author Share Posted April 14, 2018 Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
relative4 Posted April 14, 2018 Share Posted April 14, 2018 Thanks. Yes, the '07 does look a bit different from my '05 in there. Also I've never messed with the TGVs. Anyway, that plate covers the pivot bearing for the non-motor end of the TGV shaft. I've never taken that apart to see how it's sealed. Very common for the gaskets above or below the TGV to leak, never heard of that plate leaking. Are you sure the smoke was coming from the plate, and not from below or above it? Link to comment Share on other sites More sharing options...
VespaGTS Posted April 14, 2018 Author Share Posted April 14, 2018 It could be coming from below it. It really looked like it was shooting smoke down from that cover. After looking at other pages and searching for TGV Vacuum leaks I found this video. It does look like it might be the intake manifold gaskets. Unless some little gasket is leaking at the end cap of the TGV. Here is a post that talks about the same problem, but does not answer it. http://legacygt.com/forums/showthread.php/tgv-manifold-small-end-cover-vacuum-leak-236480.html?t=236480 Link to comment Share on other sites More sharing options...
VespaGTS Posted April 14, 2018 Author Share Posted April 14, 2018 Got all the answers from this thread. Damn TGV design flaw. It can be sealed but is a PITA. Time to remove the TGV or seal the end caps. Damn it! Link: http://legacygt.com/forums/showthread.php/attention-all-2007-2009-legacy-gt-spec-b-owners-192275.html Link to comment Share on other sites More sharing options...
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