its very well possible that the filter could be clogged. if your using a wet shot the pump might be at its limit. not every factory vehicle performs the same. your pump might be limted to say 350 rwhp, that guy next to you might be good for 400 rwhp....
start with basics and just do a complete tune up. check for plugs, check gap check fuel supply... borrow a fuel psi guage and see if it holds good psi up top




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