Fuel pressure loss at wot

[CAMSS2002]

I have a 02 ss w/cam,headers,exhaust,intake...etc no nitrous or turbo just bolt ons and small drivetrains add-on. When its on idle i have approx 51 lbs of fuel and from take off to about redline, my fuel pressure drops to about 15lbs and stalls. When i let go of the gas it goes up fast back to 51lbs. Its kinda the same issue thru all gears. Only when i wot it, if i let loose from the trottle it starts to runs better but still have like 30 lbs... Im guessing the fuel pump is stock (at least i did not change it) and just cant keep up with the hp. Should i change it or add one on to the existing one? And i've also heard of wiring kits for the fuel pump for more amps... Any ideas?



SHOULD I PUT ONE IN-LINE FUEL PUMP OR REPLACE THE STOCK?

[JoshieDoom]

Sounds like the stock one is taking a dump. I would go with the walbro 255 pump and their wiring kit.

[Orcus79]

How a bout a new filter, a clogged fuel filter will cause the same restriction in fuel flow and is much cheaper and easier to change.

[JoshieDoom]

Yeah need to do that as well... but you need to replace in the in tank pump.

[Cutlass]

I've seen fuel filters do that many times.

[correct1]

Had same issue with my 02 Z-28 changed fuel pump to the 225 and holds steady at about 63-65 psi.

[9t8z28]

If it is indeed a bad fuel pump, go with the Racetronix kit with the Hot Wire kit. It comes with some very good instructions and is a nice unit.