jackal8788 Posted November 10, 2015 Author Share Posted November 10, 2015 Did the car sit for a while at some point? Maybe something made a nest in the exhaust somewhere? I've had rodents build a nest inside an exhaust I had sitting outside before... Never for longer than a day and even then it has been in a garage. It's my daily driver so it gets pretty frequent attention. VF54 to 20G to VF54 to 18G build thread Link to comment Share on other sites More sharing options...
jackal8788 Posted November 10, 2015 Author Share Posted November 10, 2015 So I guess the TGV delete is the next logical enable here! Yeah, even though it is sounding pretty unlikely, I think I'll just do it once everything is apart. I mean, I'm already down there VF54 to 20G to VF54 to 18G build thread Link to comment Share on other sites More sharing options...
jackal8788 Posted November 10, 2015 Author Share Posted November 10, 2015 Just got a response back from Cobb: "Thanks for reaching out, I'd be glad to assist! I think it was me that you had chatted with on the phone. I've looked through the logs and had some of the guys here take a look as well and just as we had discussed previously, it's hard to find anything wrong in these logs or what you're saying is happening with the car. The first and best suggestion I've had so far is make sure the MAF sensor is good to go. I might not suggest just replacing it outright since it isn't exactly inexpensive, but if you know someone else with a similar Subaru, you can try theirs and see how that works for you. Otherwise, we might need to chat with the Protuner to have them take a direct look at the car as well." Does this make sense to anyone else? Has anyone had the MAF just 'go bad'? VF54 to 20G to VF54 to 18G build thread Link to comment Share on other sites More sharing options...
acumenhokie Posted November 10, 2015 Share Posted November 10, 2015 I took out my MAF a long time ago. I think it's sitting in my garage. Want me to ship it to you? Link to comment Share on other sites More sharing options...
jackal8788 Posted November 10, 2015 Author Share Posted November 10, 2015 I took out my MAF a long time ago. I think it's sitting in my garage. Want me to ship it to you? Appreciate that Chris! I'm waiting to hear back from my tuner if he's got an extra one around. If he doesn't, I will take you up on that. Thank you! VF54 to 20G to VF54 to 18G build thread Link to comment Share on other sites More sharing options...
Apexofthevortex Posted November 10, 2015 Share Posted November 10, 2015 Now I'm no expert and I'm not saying that isn't worth trying, but if the MAF did take a dump wouldn't that throw off your AFR and be very easy to spot in the logs? Link to comment Share on other sites More sharing options...
BigBopper Posted November 10, 2015 Share Posted November 10, 2015 None that I have come across yet. Everything looks to be in perfect order. I did notice on the nipple of my BOV (Turbosmart Kompact) that it is quite free-spinning. Is this normal? I don't remember it being able to spin freely when I installed it but my memory sucks.... Did you ever verify if your BPV was working properly? Link to comment Share on other sites More sharing options...
jackal8788 Posted November 10, 2015 Author Share Posted November 10, 2015 Did you ever verify if your BPV was working properly? We did and I forgot to close that loop on here. VF54 to 20G to VF54 to 18G build thread Link to comment Share on other sites More sharing options...
jackal8788 Posted November 10, 2015 Author Share Posted November 10, 2015 (edited) Just checked the throttle plate with a boroscope and it is opening fine. Unfortunately, can't see the TGVs so the intake is coming off. I'm not feeling very much hope that they are the issue at this point though... Edited November 10, 2015 by jackal8788 VF54 to 20G to VF54 to 18G build thread Link to comment Share on other sites More sharing options...
jackal8788 Posted November 10, 2015 Author Share Posted November 10, 2015 (edited) Okay, big question for the group - should the TGVs open under these conditions: - Ignition 'ON' - Accelerator at WOT The throttle plate is fully opening as I mentioned before but the TGVs aren't doing anything at all. I plan to delete them regardless but I would love for someone to tell me that under these conditions, they should be opening. Confirm?? UPDATE: Just got off the phone with Cobb and they said this is normal behavior and the TGVs will not open under these conditions so there is no way to know if they are working properly or not at this point. Edited November 10, 2015 by jackal8788 VF54 to 20G to VF54 to 18G build thread Link to comment Share on other sites More sharing options...
GTEASER Posted November 10, 2015 Share Posted November 10, 2015 From what I understand, the TGVs should only close during cold start conditions when the ECU detects that the engine is not up to operating temperature. I am not certain how they would behave in other situations related to throttle input with or without the motor actually running. GTEASER's 2012 Legacy GT - Sold GTEASER's 2009 XTeaser - Sold GTEASER's 1992 Legacy SS - Sold Link to comment Share on other sites More sharing options...
jackal8788 Posted November 10, 2015 Author Share Posted November 10, 2015 From what I understand, the TGVs should only close during cold start conditions when the ECU detects that the engine is not up to operating temperature. I am not certain how they would behave in other situations related to throttle input with or without the motor actually running. You beat me to it and my explanation is now on the previous page. I called Cobb and they said the valves wouldn't open under those conditions so this isn't really telling me anything. I'll delete them regardless but I don't have as much hope as I did. VF54 to 20G to VF54 to 18G build thread Link to comment Share on other sites More sharing options...
Unsp0kn Posted November 10, 2015 Share Posted November 10, 2015 Did someone put molasses in your transmission and diffs? Link to comment Share on other sites More sharing options...
jackal8788 Posted November 10, 2015 Author Share Posted November 10, 2015 Sure feels that way.... VF54 to 20G to VF54 to 18G build thread Link to comment Share on other sites More sharing options...
GTEASER Posted November 10, 2015 Share Posted November 10, 2015 Probably a stupid questions, but have you tried reflashing your map? GTEASER's 2012 Legacy GT - Sold GTEASER's 2009 XTeaser - Sold GTEASER's 1992 Legacy SS - Sold Link to comment Share on other sites More sharing options...
jackal8788 Posted November 10, 2015 Author Share Posted November 10, 2015 Probably a stupid questions, but have you tried reflashing your map? Not stupid at all - the only stupid thing is this annoying little issue! I have done a few reflashes and even gone back to older maps that I had where I was overboosting, etc. but where the car also pulled like hell just to see if by chance it was something with the tune, the map, or just the need for all the sensors to have a reset. Unfortunately, no change VF54 to 20G to VF54 to 18G build thread Link to comment Share on other sites More sharing options...
BBPeik Posted November 11, 2015 Share Posted November 11, 2015 Long shot, but maybe a hung up caliper? My someday I will be done with it thread. Link to comment Share on other sites More sharing options...
FLlegacy Posted November 11, 2015 Share Posted November 11, 2015 If it were a caliper there would be no shortage of smoke and brake stink everytime it was driven. Very very long shot...unless the caliper only engaged during boost. Link to comment Share on other sites More sharing options...
BBPeik Posted November 11, 2015 Share Posted November 11, 2015 I figured the same thing, but figured it would be worth a check. Possibly a bearing in the trans is bad or something, but this is a very confusing problem. My someday I will be done with it thread. Link to comment Share on other sites More sharing options...
fahr_side Posted November 11, 2015 Share Posted November 11, 2015 Are you catted? Possible the cat has melted or collapsed? Obligatory '[URL="http://legacygt.com/forums/showthread.php/2008-gh8-238668.html?t=238668"]build thread[/URL]' Increased capacity to 2.7 liters, still turbo, but no longer need spark plugs. Link to comment Share on other sites More sharing options...
BBPeik Posted November 11, 2015 Share Posted November 11, 2015 He has a catless dp. My someday I will be done with it thread. Link to comment Share on other sites More sharing options...
jackal8788 Posted November 11, 2015 Author Share Posted November 11, 2015 (edited) I likely won't have time until this weekend to actually do the TGV delete so in the meantime, any other thoughts are welcome Just to recap where we are now: - Running e85, confirmed blend is ~83% ethanol - DAM at 1.0 - AFRs normal in both open loop ( ~11.0 at WOT) and closed loop (14-15) - No stuttering, jerking, or noticeable abnormality when driving or accelerating - No rough idle or hard starting - Normal boost (~21 PSI peak tapering to ~20 PSI redline) - Leak-tested entire intake tract for boost leaks - none found - Inspected throttle to ensure plate is opening fully. Appears to be working fine. This is substantiated by a 100% throttle reading in datalogs - TGV voltage signals in datalogs show that the valve are opening properly. I will be deleting them this weekend just to rule them out as a potential cause. - No collapsing of intake pipe - No slipping of clutch or drivetrain - No noted dragging of brakes, transmission, or other driveline components - No anvils, sandbags, corpses, or other forms of weight have been added - No observed exhaust leaks, no cat in the DP to plug up - Cold engine compression test shows ~100 PSI in all cylinders. I'm told this is to be expected from a cold engine. Again, someone who didn't know what the car should feel like would not know there was a problem. Edited November 11, 2015 by jackal8788 VF54 to 20G to VF54 to 18G build thread Link to comment Share on other sites More sharing options...
fahr_side Posted November 12, 2015 Share Posted November 12, 2015 Okay, one more thing. Can you check timing values are where they were before? Check the Total Timing figure both at peak load and at 6k0rpm. I have seen stock IAT timing comp tables that reduce timing at lower temps. Since you're presumably going into winter... Sent from a device using some software. Obligatory '[URL="http://legacygt.com/forums/showthread.php/2008-gh8-238668.html?t=238668"]build thread[/URL]' Increased capacity to 2.7 liters, still turbo, but no longer need spark plugs. Link to comment Share on other sites More sharing options...
cww516 Posted November 12, 2015 Share Posted November 12, 2015 You'd think that, but the fact that it's 50F and raining right now (I'm about an hour and a half north of him) would suggest otherwise... Link to comment Share on other sites More sharing options...
jackal8788 Posted November 12, 2015 Author Share Posted November 12, 2015 Okay, one more thing. Can you check timing values are where they were before? Check the Total Timing figure both at peak load and at 6k0rpm. I have seen stock IAT timing comp tables that reduce timing at lower temps. Since you're presumably going into winter... Sent from a device using some software. Thanks fahr_side. Just so I understand better, if that was happening, would it show up in my 'Ignition Timing' parameter on my datalogs or is there another parameter I need to look at? In other words, is 'Ignition Timing' indicative of ALL adjustments and truly the total timing being applied? If it is, then I think the mystery still remains (per the graph below, the 'Low Timing' curve can be seen in purple and is pretty much the same as the 'Timing' curve which is from a datalog taken when the car was performing well). VF54 to 20G to VF54 to 18G build thread Link to comment Share on other sites More sharing options...
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