Hey guys, ran into an issue with the car today. I have a 2012 wrx running a stage 2 torqued performance e-tune with a cobb intake and cobb turboback. Had this setup for 3 years with 0 issues. I laid into the throttle a little today in 3rd gear and it got to about 3500 rpm and bogged down. The rpms wouldn't get much higher, at least for a couple seconds and i didn't want to hold it any longer. 1st and second gear it gets higher in the rpms but still loses power and ill get a pop out of the exhaust. When its building boost it sounds a touch louder than normal and then it just like flutters. My accessport is still reading 16-18.5 psi peak but its not consistent. i have a constant -.35 fine knock learn, even at idle. The AF Learn 1 (this may not be the right title) is around -5to -7 when putting around and gets up to -10. DAM is constant 1. Fuel pump duty was in the 90's as normal, but for 1 test drive injector duty was only peaking at like 1.7?, but when i ran it the last time i think it got up to 75. My intercooler to throttle body hose had backed off a bit (i replaced it with a mishimoto when i did the downpipe), but there was still plenty of the fitting inside it, and it seems fine now. I did a couple data logs, haven't looked at them yet (and I'm not smart enough to diagnose the problem from them anyway) but they're probably only a second or two until the car stops accelerating and i get off throttle because i don't want to do any damage. I realize this a lot of info but could really use some feedback. Anything helps, thanks.
Loss of Power
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Fill up lately?
Funny you ask because in the 3 years I've owned the car 99.9% of the time i get gas at the same shell station...except last week i got stuck far away and went to an exxon. I watched him hit 93 and i still have the receipt that said 93 though. you think bad fuel could cause this? i filled up with shell just now but only lugged the car home 1 mile and nothing got better.
Ill also sadly admit i haven't done and reviewed a datalog in the last year, and haven't plugged in my accessport in over a month or so until today.
Ill also sadly admit i haven't done and reviewed a datalog in the last year, and haven't plugged in my accessport in over a month or so until today.
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I wouldn't go wailing on the car for data logs yet. I would take a look at your plugs, coils, and maybe clean the maf sensor
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If you have 100 or higher octane in your area I'd add 2 to 4 gallons and see if that helps. You might also have water in your tank.
Cleaned my air filter, pulled out the maf sensor and it looked immaculate but wasn't sure if you can visibly see the build up well. So I didn't clean it. Put injector cleaner in with some fresh gas and drove it around for a bit. Check engine light came on at one point for 2 min when I held the throttle in for a bit. 1st and 2nd gear will rev out all the way but not Normal power. 3rd gear and up I cannot get above about 3200rpms. Dropped it off at the dealer, they're running a diagnostics test and I should hear from them soon.
They ended up doing a compression test and told me I have low compression in 3 cylinders. Not the news I wanted. $6 grand for a new short block. They asked me if I was putting regular gas in it because there was a lot of gunk and carbon build up. I always put 93 in it since day 1. Always changed the oil at 3,000 miles. Always eased into the throttle when getting up in the rev range. I have no clue what I'm gonna do with this car now
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Who quoted you $6K?
Take the car to Prime Motoring and have them get you a new engine and a JR tune.[/QUOTE]
That quote was from dealer, I wouldn't have them do the work. Idk what to do. I guess I'll call around a few shops and price out a rebuild with upgraded internals. It doesn't make sense to sell the car as is and take a huge loss. I should probably get a second opinion, although I doubt they would screw up the compression test
Who quoted you $6K?
Take the car to Prime Motoring and have them get you a new engine and a JR tune.[/QUOTE]
That quote was from dealer, I wouldn't have them do the work. Idk what to do. I guess I'll call around a few shops and price out a rebuild with upgraded internals. It doesn't make sense to sell the car as is and take a huge loss. I should probably get a second opinion, although I doubt they would screw up the compression test
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Shop around for reputable engine builder. For that price you might as well buy a built engine from IAG with better internals and upgrade (and delete things) at the same time. I know it's such a heartache when these things go but somehow we keep loving them 
Good luck on the repair
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