i drove my car today for about an hour at about noon....then let it sit for a few hours.....i got back in to get some gas and about a mile into the drive it started feeling like it was running out of gas....it started bogging when i hit the gas. It will climb through the rpm range, but its goin slow and kinda feels like the timings off(but considering i had the timing done by a shop about 6 months ago, and it has run great since then, i dont think its the timing)the exhaust feels like its rattling only when i rev. it....its a cat back exhaust(3 inch cat, back to a flowmaster muffler)i have a hypertech race chip with bigger(dont know what p.s.i.)fuel injectors.....my mass air flow sensor has been going out for a while...maybe thats it, just wanted to get a few opinions...any info wuld be great, thanks....-travis

 

Most likely the MAF if you say its been heading south. It will cause that kind of problem. No check engine light?