i have a 93 cobra with the folloowing mods. stock bottom end, stock cobra upper and lower intakes,gt 40 turbo swril heads, 70 mm throttle body, vortech v1 supercharger pushing 6lbs,power pipe,25lb injectors,bbk equal leanth headers,off road h pipe flowmaster car back, 3.55 gears, bbk 255lph fuel pump and vortech boost apump inline pump. around 4000rmp it seems to cut out almost like its running out of fuel. i am going to be installing a adjustable fuel preasure regulator, but am not sure at what psi to set it at. any help would be great. thanks for the help
fuel psi
- Thread starter MWORTERS
- Start date
Use the SOP meter...
Get one of your buddies to ride along with you. Find a level stretch of road where you can do some testing. Don't choose a speed range that will make you shift gears, the shift quality & speed will affect your results. Use 2nd or 3rd gear and do a run from 2000 RPM to 5800 RPM. Call out the RPM as it increases and have you buddy record it and the elapsed time. If you have one of those cheap digital watches like I do, a stop watch is built in. Start the fuel pressure at 36 PSI, vacuum off and make a run. Turn it up to 37 and make another. Be sure to reconnect the vacuum every time you set the pressure. Keep turning up the pressure and making runs until you notice a drop off in time. If your bud was careful to record the results, you'll have a nice chart to use to find the optimum pressure.
Get one of your buddies to ride along with you. Find a level stretch of road where you can do some testing. Don't choose a speed range that will make you shift gears, the shift quality & speed will affect your results. Use 2nd or 3rd gear and do a run from 2000 RPM to 5800 RPM. Call out the RPM as it increases and have you buddy record it and the elapsed time. If you have one of those cheap digital watches like I do, a stop watch is built in. Start the fuel pressure at 36 PSI, vacuum off and make a run. Turn it up to 37 and make another. Be sure to reconnect the vacuum every time you set the pressure. Keep turning up the pressure and making runs until you notice a drop off in time. If your bud was careful to record the results, you'll have a nice chart to use to find the optimum pressure.
