LS1Silverado05

iTrader: (41)

Going to monitor my fuel psi for a couple days of mixed driving and see if I get any fluctuations in my psi. My pump whines, but the car pulls hard and idles well, so I think the only way to tell for sure if I have a pump issue is to monitor the psi's... So... what should I see at:

Idle?

Part Throttle?

WOT?

Thanks!

405HP_Z06

iTrader: (11)

The factory pressure specification is 58 psi, so you should see close to this all of the time. Monitor and report back. If you can, don't use a dampened gauge assembly. You want to see the fluctuations.

LS1Silverado05

iTrader: (41)

Ok I monitored it through all kinds of driving...

58-59psi Idle...

Light throttle= 58

1/2 Throttle= Maybe down to 56-57

WOT= 55-56 (definately no lower than that)

There were never any random drops or fluctuations at any time or rpm...

Like I say, car runs great, no problems.. just a noisy pump... should I ride it out since the psi's all look good?

405HP_Z06

iTrader: (11)

Pressure's look good.

LS1Silverado05

iTrader: (41)

So if it was your car would you chalk up the small pump noise to just a noisy pump? Or would you change it out? I tend to be a bit of an alarmist I guess, but I'll be pissed at myself if I get stranded in a couple weeks...but I havent decided on a pump set-up yet and I dont want to throw money where I dont need it yet...

405HP_Z06

iTrader: (11)

I guess it depends on the circumstances. If you don't feel comfortable, change it. While your at it, get an upgraded pump form Lonnies Performance.