whitrzac Posted July 12, 2015 Share Posted July 12, 2015 I installed a ELH last night. Now the car has a very nasty stumble/miss at 2-3krpm under load. Starts up, runs fine. Closed loop cruising is fine, AFRs are dead on. Apply enough throttle it hit ~10psi and the car stumbles and misses. AFRs are ~17:1:eek: The injector duty cycle is only ~10-20% when this happens. If manually put it in 3/4/5 gear and the car will not accelerate. It sits at 2-3k and stumbles. If I downshift manually and apply 100% throttle above 3500-4000 the car is fine. I've spent most of the day trying to troubleshoot this. It's not a vacuum leak AFRs at 4+k are good MAF is reading correctly Front o2 matches the LC2 Closed loop driving is perfect Tps is reading correctly I've attached a log. IAM gets bumped down by this stumble/miss.romraiderlog_20150712_114759.csv Link to comment Share on other sites More sharing options...
rhino6303 Posted July 13, 2015 Share Posted July 13, 2015 There could be a pre-turbo exhaust leak. Link to comment Share on other sites More sharing options...
quick4dr Posted July 13, 2015 Share Posted July 13, 2015 check your uppipe gasket, and make sure you tune to account for the flow of the ELH Link to comment Share on other sites More sharing options...
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