I've got an 06 Ram with 5.7 MDS. I installed a mopar cai but now it has a chocking or backpressure type sound when I'm running at 1500-1900 rpm. I then had a magnaflow dual exhaust put in but it's still doing it. Is it the change in compression when the mds kicks in that i'm hearing?The noise occurs everyminute or so depending how I apply the throttle. It only does it when I'm coastingat that rpm. I hope someone has an answer, this is getting frustrating. [:@][&:]