I have a set of orange top labeled python. Can anyone tell me what lb injectors these are? I have a GT40P Head Cobra intake stock cam and at idle it runs rough and backfires. When I put load on the engine it smooths out. The plugs seem fuel soaked so I'm wondering if the injectors are to blame. It does have a FMAS Maf sensor but the part number is long gone. Can anyone help me please?