drsnobiz Posted January 29, 2009 Share Posted January 29, 2009 Okay, so I have a 2005 LGT 5MT. I just bought it recently and decided that I wanted to get a full exhaust and a few other things. So far, mechanically, I've only installed a Cobb UP and Cobb Race DP. My CBE actually arrived yesterday, but has not been installed yet. The problem arose when I flashed Stage 1 with my APv2. It seemed like I just wasn't getting the power I should be out of it. I got on here (without mentioning that problem) and everyone was saying that I should go ahead and flash Stage 2. I did, and now it's gotten even worse and much, much more noticeable. I hooked up my AP yesterday just to see how much boost I was getting and I can't get more than about 4 pounds. It's really frustrating and I can't figure out what's going on. I don't believe I have any leaks from the UP/DP install. Any advice or info on places to check for issues would be great. Link to comment Share on other sites More sharing options...
Guest LGT-NY Posted January 29, 2009 Share Posted January 29, 2009 What are the symptoms? Are all you vaccuum lines connected properly? Link to comment Share on other sites More sharing options...
drsnobiz Posted January 29, 2009 Author Share Posted January 29, 2009 I didn't touch any of the vacuum lines during the installs, so I don't see how they would be. I've got to get out there today and make sure everything is connected right. But it seems like it's gotten much worse the more it runs. Link to comment Share on other sites More sharing options...
Guest LGT-NY Posted January 29, 2009 Share Posted January 29, 2009 I've blown off the vac line from the BOV that connects under the intercooler just by driving, you don't necessarily have to "touch" anything for that to happen. Alot of times, this happens to people that go stage 2 due to increased boost levels. Again, when you say "running like crap", what do you mean? What are the symptoms???? Link to comment Share on other sites More sharing options...
drsnobiz Posted January 29, 2009 Author Share Posted January 29, 2009 At various RPMs, under pedal depression, the engine makes a howling noise and does not accelerate. Not a whistling, but a howling. That's the best way I can describe it Link to comment Share on other sites More sharing options...
drsnobiz Posted January 29, 2009 Author Share Posted January 29, 2009 Also, my gas mileage has gone to crap. On a stretch of 20 miles yesterday on the highway I averaged about 17mpg. If I get on the gas in the least amount, the computer display shows my realtime mpg at around 5mpg. Link to comment Share on other sites More sharing options...
Guest LGT-NY Posted January 29, 2009 Share Posted January 29, 2009 It definitely sounds like you popped your vaccuum line. Take off your TMIC and make sure the line that runs from your BOV is connected properly. Then zip tie both ends securely. The same thing happened to me. Link to comment Share on other sites More sharing options...
drsnobiz Posted January 29, 2009 Author Share Posted January 29, 2009 That'll be the first thing I check in a few hours when I can. Thanks for the input. I'll post up results afterwards. Link to comment Share on other sites More sharing options...
Guest LGT-NY Posted January 29, 2009 Share Posted January 29, 2009 Link to comment Share on other sites More sharing options...
fonts Posted January 29, 2009 Share Posted January 29, 2009 it definitely sounds like you popped your vaccuum line. Take off your tmic and make sure the line that runs from your bov is connected properly. Then zip tie both ends securely. The same thing happened to me. +1 Link to comment Share on other sites More sharing options...
korpsepatrol Posted January 29, 2009 Share Posted January 29, 2009 Log the car, check the boost levels and vacuum. Also you might want to take soapy water and put some where the intercooler meets the turbo to see if there is a leak at that point as well. 2008 6mt Legacy Gt Spec B DGM - Not so Stock/Work in progress 2006 5mt Legacy Gt OBP - Sold 2005 5eat Legacy Gt OBP - RIP R.I.P Coxx Link to comment Share on other sites More sharing options...
drsnobiz Posted January 29, 2009 Author Share Posted January 29, 2009 Well, in all five gears boost is peaking around 4 pounds. IIRC, the max was 4.2 lbs. This was at Stage 1. Link to comment Share on other sites More sharing options...
Spec B Posted January 29, 2009 Share Posted January 29, 2009 I am not sure this is a vac leak issue.. Have you tried flashing back to stock? Link to comment Share on other sites More sharing options...
drsnobiz Posted January 29, 2009 Author Share Posted January 29, 2009 I am not sure this is a vac leak issue.. Have you tried flashing back to stock? I have not. Should I try that first before checking beneath the intercooler? I did put a Stage 1 flash on top of the Stage 2 base and that is what's currently running. Link to comment Share on other sites More sharing options...
Guest LGT-NY Posted January 29, 2009 Share Posted January 29, 2009 You mean the other way around right? Stg. 2 after stg.1? Link to comment Share on other sites More sharing options...
drsnobiz Posted January 29, 2009 Author Share Posted January 29, 2009 I'll reflash the stock map and try that on my way home. Link to comment Share on other sites More sharing options...
drsnobiz Posted January 29, 2009 Author Share Posted January 29, 2009 You mean the other way around right? Stg. 2 after stg.1? No, the Stage 2 is my base map. I flashed the Stage 1 on top of that when I started having issues. Link to comment Share on other sites More sharing options...
Guest LGT-NY Posted January 29, 2009 Share Posted January 29, 2009 Umm... OK. Not sure that makes sense... Fun isn't it?!?!? Ahhh, the trials and tribulations of modding Subarus. Link to comment Share on other sites More sharing options...
Spec B Posted January 29, 2009 Share Posted January 29, 2009 I have not. Should I try that first before checking beneath the intercooler? I did put a Stage 1 flash on top of the Stage 2 base and that is what's currently running. I would eliminate the tune as being the issue first. If you flash to stock and the problem persist, then we know that the problem is definately not tune related and we could move on to the mechanical stuff. Link to comment Share on other sites More sharing options...
drsnobiz Posted January 29, 2009 Author Share Posted January 29, 2009 Planning on getting a ProTune on 2/21 so if the tune is the actual issue that should be remedied pretty quickly. Thanks for all the input here guys. Link to comment Share on other sites More sharing options...
tommypenguin Posted January 29, 2009 Share Posted January 29, 2009 As others have said flash back to stock, see how the car reacts, I would be surprised if the cobb map(s) made your car run so poorly on a mechanically sound car. Also you didn’t try flashing stage 1 real time map on top of your stage 2 base map did you? I was a little confused from your posting that could cause an issue also. Have you thrown a check engine light and is your idle rough? Link to comment Share on other sites More sharing options...
drsnobiz Posted January 29, 2009 Author Share Posted January 29, 2009 As others have said flash back to stock, see how the car reacts, I would be surprised if the cobb map(s) made your car run so poorly on a mechanically sound car. Also you didn’t try flashing stage 1 real time map on top of your stage 2 base map did you? I was a little confused from your posting that could cause an issue also. Have you thrown a check engine light and is your idle rough? Actually, yes. I've got a stage 1 realtime map on top of my stage 2 base map. However, I only did this when the stage 2 map was running like crap to see if stage 1 would be better. No CELs and idle is normal. I only notice issues when I attempt to accelerate. I'll flash back to the stock map when I get out of class in 30 minutes. Is it okay to simply do a realtime flash or must I change the base map instead? Link to comment Share on other sites More sharing options...
tommypenguin Posted January 29, 2009 Share Posted January 29, 2009 Actually, yes. I've got a stage 1 realtime map on top of my stage 2 base map. However, I only did this when the stage 2 map was running like crap to see if stage 1 would be better. No CELs and idle is normal. I only notice issues when I attempt to accelerate. I'll flash back to the stock map when I get out of class in 30 minutes. Is it okay to simply do a realtime flash or must I change the base map instead? When you change to stage 1 or stage 2, you need to change the base map first by connecting green test wires and flashing, then flashing the corresponding real time map with green connectors disconnected, don’t mix and match base maps with real time maps. Did you ever have the stage 1 base map and stage 1 real time map loaded at the same time? Either way, go back stock first and continue diagnosing this systematically. Link to comment Share on other sites More sharing options...
drsnobiz Posted January 29, 2009 Author Share Posted January 29, 2009 When you change to stage 1 or stage 2, you need to change the base map first by connecting green test wires and flashing, then flashing the corresponding real time map with green connectors disconnected, don’t mix and match base maps with real time maps. Did you ever have the stage 1 base map and stage 1 real time map loaded at the same time? Either way, go back stock first and continue diagnosing this systematically. When I first installed the AP it was outdated and I did install the Stage 1 map for both RT and base. It did not act as bad as it is now, but it wasn't normal. I then changed both the RT and base map to Stage 2. Later that day I uninstalled the AP completely and updated the firmware and maps. Then installed the Stage 2 map for both Rt and base. When I noticed it running more and more poorly, I changed the RT map back to Stage 1. Either way, when I get to the car I'll change the RT and base map back to stock and see how it drives. Will then post up info. Thanks again for all the advice and info. Link to comment Share on other sites More sharing options...
GTTuner Posted January 29, 2009 Share Posted January 29, 2009 I'd look at that intercooler, possibly you popped the seam at the inlet side. Link to comment Share on other sites More sharing options...
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