alot of questions??
 

Ok, first off I will tell you what i have on my car. pwerdyne s/c 9lb, headers, x-pipe, catback,24 lb injectors, pro m 75mm, tko, 3.55 gear , adjustable feul reg. stock motor. Now, her is my problem. When my i get on my car above 4750 rpm it seems to surge. I can feel my car try to go faster but it just kind of feels like i have bent rims, but there not. its hard to explane. Could my lifters be bad, leaky injector??? I really have no idea. I just know it happens at high rpm when i get on it?? Oh and my boost gauge only says 5-6 lbs of boost.

I don't see any mention of a bigger than stock fuel pump....maybe it's the pump? what does your fuel pressure look like when the car begins to surge?

As for the boost gauge, where are you getting your vacuum source from?

I have a 190lph pump, I have the boost hooked up to the line that the comes off fo the fmu.