most of the time when i take off from dead start my blazer doesnt have very much power at all i can mash it to the floor and still wont change after it gets up to a certain mph it will take off.

it only does this on take offs its fine when driving down the highway at speed limit and i go to pass someone it has more power but i dont think it has what it should

 

After a quick review of your earlier posts and what you have done, I suggest getting a fuel pressure gauge and following the steps in this thread then report back with the findings.

 

i just put a new fuel pump and fuel filter on it. wat else has to do with the pressure?

 

More than once have members replaced both and still the new pump was not performing correctly. If you follow the instructions in the linked thread, you can also tell if the fuel pressure regulator is at fault. With such a vague issue as 'no power' a process of elimination is required.

 

ok ill get it checked but i was thinkin cat converter may be junk

 

I notice that my 98... when first started... within the first minute seems to choke a bit depending on where we are at...