subaruowner840 Posted July 24, 2011 Share Posted July 24, 2011 Stock 2005 GT 80K miles, no real history of any problems. The past couple months I'm just not feeling the surge I normally feel starting 3K RPM's. I have good power still, but normally around 1/2-3/4 throttle I feel that little push into my seat when her turbo's all spooled up. Now when she gets over 3,500 RPM there's more power, but not the normal GT thrust we all love. Since I noticed the difference I've changed plugs, new air filter, regular oil change. I checked the MAF sensor when I did the air filter, all clean. Used different gas stations, even added some octane boost to one tank. Still no power surge... My only thoughts are -Hot weather, TMIC not cooling enough - using conservative timing? -Waste gate not closing all the way? -Tired dying turbo? Otherwise I have no check engine light, no strange clunking, smoking, buzzing or hissing. Any thoughts? Link to comment Share on other sites More sharing options...
goneskiian Posted July 24, 2011 Share Posted July 24, 2011 How hot is it? The heat will REALLY kill the punch on these for sure. Link to comment Share on other sites More sharing options...
subaruowner840 Posted July 24, 2011 Author Share Posted July 24, 2011 Over 90 pretty much everyday. Colorado dry 90. Link to comment Share on other sites More sharing options...
LGT For ME Posted July 24, 2011 Share Posted July 24, 2011 Im in CO too and have felt a little power drop but nothing I would be concerned about. You might want to pull a learning view and see how it looks. Since you stock a easy way to fix it is go stg1 or 2. Great local road tuner in Denver, Eric w/ torqued performance, check it out Link to comment Share on other sites More sharing options...
Max Capacity Posted July 24, 2011 Share Posted July 24, 2011 Sounds like good advice there. Meet up with a Tuner so he can data log and make sure everything is safe. 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
06LegacyRBP Posted July 24, 2011 Share Posted July 24, 2011 Its nothing...when u become to use to the boost it just seems slower, that's how I feel until I have someone in the passenger and they go damnnn this sh*t is fast lol... Link to comment Share on other sites More sharing options...
carguyco Posted July 25, 2011 Share Posted July 25, 2011 I am in Colorado and driving home from USSSA softball tourney in Aurora today i felt the same thing...hot as heck today and that is what I attributed it to. However, anybody have contact info for that road tuner..? May need to make a road trip up to see him... Thanks Link to comment Share on other sites More sharing options...
rweezy Posted July 25, 2011 Share Posted July 25, 2011 Same here i was tryin to catch up to a buddy and the powa just wasnt there. Probably didnt help i had my a/c blasting and my subs cranked . Good advice on the LV though its easy enough to do and good to be on the safe side. Link to comment Share on other sites More sharing options...
LGT For ME Posted July 25, 2011 Share Posted July 25, 2011 Here's the contact info for Eric w/ Torqued Performance, great local road tuner 303.642.6574 Tell him Keith sent you and I might get hooked up for my next revision Link to comment Share on other sites More sharing options...
Max Capacity Posted July 25, 2011 Share Posted July 25, 2011 FWIW, last week here we had triple digits temps, for the drive home from work, granted we're close to sea level. But I didn't notice a power lose. I did take it easier on the car. The morning drive to work most of the week was fine, temps in the mid 60's. 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
RJS5689 Posted July 26, 2011 Share Posted July 26, 2011 I noticed the power loss in the heat much more on my stock car, it's not as noticeable at stage 2. I've been told the difference between winter temps and triple digit temps could be as much as 30hp ! While I don't know the validity of this; it's shocking. Link to comment Share on other sites More sharing options...
SSpeed Posted July 26, 2011 Share Posted July 26, 2011 My car has really been sucking it up with this heat, the external temp said 102 the other day... Like suggested, pull a Learning View if you're concerned... I wouldn't go see a tuner just yet.. The difference between the daytime 102 and evening 84 was shocking... Link to comment Share on other sites More sharing options...
rob-2 Posted July 26, 2011 Share Posted July 26, 2011 I believe you're getting heat soak and the power will come back when it' cools. Since it's all 'feeling' I'm sure it's in your head Link to comment Share on other sites More sharing options...
SBT Posted July 26, 2011 Share Posted July 26, 2011 Don't know, but worth checking (especially since you mentioned it) to make sure that your waste gate arm bushing is okay. I had similar symptoms, and it turned out the WGA bushing had worked loose and was holding the WG 1/2 over - 1/2 off the WG orifice. You can only get so much boost with the WG stuck in that position. Also, not sure if you're running am Access Port or not, but if you are, then you can also try reflashing your map. At one point, I was only getting WG boost pressures (which is my base map) because the guy servicing my car disconnected the battery and reset the map to base map, which caused similar symptoms to yours. Didn't even tell me that he had disconnected the battery - had to find this out separately. Reflashed to my real-time map and life was good again. Or it could just be this thuggin heat... - Pro amore Dei et patriam et populum - Link to comment Share on other sites More sharing options...
tofuman924 Posted July 31, 2011 Share Posted July 31, 2011 i started to feel less power after my dad filled my car up with 87 octane when i clearly told him to put 91... any idea on how to Clean it out? Link to comment Share on other sites More sharing options...
frank_ster Posted July 31, 2011 Share Posted July 31, 2011 drive it .. after you put 91 back in disconnect the battery ( reset ecu ) Now that's thinking out of the boxer! fyi all 05 + legacy's have built in code reader Link to comment Share on other sites More sharing options...
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