PROCHAMBER RATTLE WHEN GETTING INTO GEAR [HELP PLEASE!!!]

[01GTPony]

I just installed a prochamber in my '01 and there is a rattle/vibration when I'm stopped and let out the clutch in first. The rattle happens right as the gears are engaging. It never happened before I installed the PC. I read in another post someone had this problem but I couldn't find a solution. Any help would be much appreciated. Thanks guys.

 

[99StanGT]

Same thing happens in my car........I just deal with it and give it a lil more gas when letten off the clutch