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ok so my car set up right now is a gen 3 ported manifold, GT500 injectors, and a pmas fenderwell. i am tuned on E85 and tuned by 5Star out in texas. I am in california. they tune good cars and my friends FBO E truck, but my car is having a backfire problem and when i downshift i need to...

so i have a gen 3 ported intake pmas fender well and lu47s. car is running horrible tuner tried so many different things car just keeps going lean and rich. when i do a pull car hits limiter and doesn’t shift. im not sure what it could be fuel pump sounds good waiting on ford performance to get...

so i recently installed a gt 350 manifold on my 2016 5.0. i tuned it and tuner said it runs fine but at top end it doesnt get in enough air to the manifold. my maf sensor reads around 23-37 lb/min at 6-7600k rpms. so its definitely not getting enough air in because it should be 40-50 pounds. i...