ok i have a problem and need some advice i have a very noticable tapping light light knock almost like a spark knock on a gasser you can hear it at idle a litlle but when driving down road if you step on go go pedal its real noticable intil the boost gets above 25 psi or 3/4 throttle or more or just driving around town normal i had the bdtd and quad boost fooler but have taken boost fooler off and had to go to bd dealer to get program removed and returned back to stock because some one thought they needed my box more than me anyways it was having some rough idle with bdtd but did clear up after i took it off but now it comes and goes want too take it dealer only has 38k on it just worried they can tell it has had bdtd on it any help is greatly appreciated