started after injectors were replaced. bad mpg, black smoke when i hit passing gear surges like it running streight off the nfuel pump

 

When you did the spider, did you replace the nutkit (fuel lines that connect to the injetor) ?

 

make sure nut kit was replaced. Also have a fuel pressure test ran again. When I got my replacment fuel pressure regulator it was set to 90psi and would do this. Also if something wasnt put back correctly fuel could be leaking into the intake around and o-ring or something. Whoever did the repair needs to see it again, lol