Wildem Posted May 9, 2018 Share Posted May 9, 2018 The car feels as though it wants to keep building but it just maintains 5psi and “lags” per-say. This doesn’t happen all the time. It will be just out of no where mid drive it cuts off at 5psi and has low power. The car isn’t throwing any check engine lights for it and I’ve driven it well over 300 miles. I’ve changed the tubes on the back side of the intercooler as well as the gaskets in hopes it could be a leak but everything is tight. 1 Quote Link to comment Share on other sites More sharing options...
GeneralDisorder Posted May 9, 2018 Share Posted May 9, 2018 Have you checked codes? 5-7 psi is wastegate pressure so it's either in limp mode or has ignition problems. Bad plugs or bad coil packs or both (likely). GD Quote Link to comment Share on other sites More sharing options...
Wildem Posted May 9, 2018 Author Share Posted May 9, 2018 Yes i did, it’s showing no codes Quote Link to comment Share on other sites More sharing options...
GeneralDisorder Posted May 10, 2018 Share Posted May 10, 2018 It doesn't really mean anything - so many of these cars have been tuned (and badly I might add) that you can't trust they didn't go in and delete a bunch of "nuisance" codes - the ones that get deleted most commonly are the misfire codes. Does the car have any modifications? GD Quote Link to comment Share on other sites More sharing options...
Wildem Posted May 10, 2018 Author Share Posted May 10, 2018 100% stock, one owner car and I know for a fact he didn’t have the intelligence to modify anything to make the car run perfect for 3 months and then out of the blue run like this, like I said, I reset the computer as well and ran it well over 300 miles so at this point if I had a misfire I’d be able to Atleast see it pending. Quote Link to comment Share on other sites More sharing options...
GeneralDisorder Posted May 10, 2018 Share Posted May 10, 2018 Check for exhaust back-pressure. These models have catalytic converters in the up-pipe before the turbocharger. Suspect you may have a malfunction in the up-pipe cat. Happens pretty frequently and destroy's turbo's. GD 1 Quote Link to comment Share on other sites More sharing options...
Bushwick Posted May 15, 2018 Share Posted May 15, 2018 Is the turbo making any different noises when it's trying to spool? Like before it was quiet, now it "howls"? Is the wastegate working correctly? Is the BOV stock and working correctly? Quote Link to comment Share on other sites More sharing options...
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