we have a 92 firebird with a vortech supercharger v-2 after 4000rpms the car loses pull and starts to break down. We belive its a fuel realated problem has anyone seen this befor or even close.... help need som guidence ITS A 5.7 TPI

Did you just install the charger?

it probably needs to be tuned or your pump isn't keeping up

could b loys of things. what are the sparkplug's gaped at?

Is the fuel pressure staying somewhere reasonable? What timing/plugs/gap is it running?

the sc was just put on about 6months ago but has gave us problems from the begining we think the fuel injectors are shuting off due to to much presser they're stock the plugs are gaped.

the spark pulgs are gaped at factory settings

Just something I experienced on a ford. We had to put a one way valve between the map sensor and the vacuum line. Cause every time he hit boost it would fall on its face. Also if you have 22 lbs injectors you need like 80 to 100 psi fuel pressure. Gap plugs at .35 or less.