Hi, I know I am new to this site but I was hoping someone here could be of some help. I have installed a powerdyne XB-1A supercharger on my car (which has a 347) and I am really dissappointed in the amount of boost I am seeing from it (only 6lbs max). Powerdyne's sales rep told me the unit should be good for 12 to 15lbs and even their website has it listed as 15 to 18lbs (link is here -> http://www.proficientperformance.co...&Store_Code=powerdyne&Product_Code=A10142-111 ), but I am not seeing anything close to that. Has anyone had the same problem with this supercharger?