high rpm stumble/miss
 

I've recenly noticed a slight miss/stumble or whatever you wanna call it in my 01' only have this trouble in the higher rpm's say above 2500 or so, & only does it with both boxes on & w/the blue chip turned up, if I watch out the mirror when it does it the smoke kinda comes & goes with the stumble, I have a pusher pump from Piers, but I'm starting to think my fuel pressure may be dropping off????? sound like the symptoms????? I know I outta get a gauge, but right now the funds are tight & I figure I'd be better off spending on a fuel system of some kind to fix the problem than to spend the $ for a gauge that's gonna tell me I need to buy a fuel system, what do ya'll think?????? thanks, Dusty

anyone???????????