I have a 2008 EvoX everything is stock except for: Ams intercooler, Ams intake, Ams piping, Ams downpipe. My problem is that when I rev from idle the rpms stay up. Im not sure if its because the injectors are delayed or just pouring to much gas into the cylinders and the engine is trying to burn it off. Is this a maf calibration problem or is something messed up?