When I let off the gas, then get back on it, it usually runs okay. it is getting to where it does it more often. Feels like I am loosing one cylinder momentarily. If I was to take it to the shop, it wouldnt do it. naturally... I replaced the fuel filter with a high volume Steeda filter. New cold air kit but it did it before I added either of these. It has 53,000 miles on it. I have owned it for 3000 of those. Any suggestions?