NVR KNO

Hey guys. I have an 01 Z06 and am wondering what the limit of the fuel pump is. Here is what my plans are for the car....

Halltech CAI
ARH Longtubes
42lb injectors
dry shot - only running a 100shot.... For now.

I am hoping for around 380rwhp on motor and around 480rwhp or so on the spray. Do you think with the injectors, I will be okay with the stock fuel pump?

What are they rated at stock?

SStheBest

iTrader: (2)

im not sure on the ratings....BTW u have 2 pumps....for those mods youll be fine...u dont really have to worry about changin your fuel pump until u start doing full mod internals and FI

ls1290

iTrader: (20)

What the ?!?!?!? Unless Fred the fuel pump installer was drunk on the job when he did your car, all C5s & C6s have a single fuel pump Your stock fuel pump will handle a 100hp shot fine.

Keith

allngn_c5

iTrader: (3)

+1 please explain. I heard someone else talk about dual pumps but didn't bother to say anything.

ls1290

iTrader: (20)

Many people making a lot of rwhp, 700 or more, will run dual fuel pumps. Running two fuels will ensure that the fuel flow rate and pressure will remain at the desired level when the car goes into WOT mode and starts to drop a lot of fuel. I have two fuel systems I run in parallel. The main one is dual 255L pumps running from a sump in the drivers tank. The secondary/backup system is a single 255L in-tank pump that has replaced the stock pump.

As I said the stock pump will handle a 100hp shot from either a wet or dry kit. Many people are doing this without a single problem as long as the car is tuned for the nitrous shot. If you do a dry kit and ran more than a 75hp shot, upgraded injectors is a must.

Keith

96-speed

iTrader: (19)

There are 2 pumps on all C5s. One a high pressure pump used to feed the engine and the other is a non-mechanical pump that continually refills the driver's side tank. The main fuel pump doesn't draw fuel out of the passenger side tank.

Ryan

ls1290

iTrader: (20)

That is incorrect. There is no second pump in the passenger side tank. Fuel is draw from the passenger tank to the drivers side tank via a siphon affect from the return line of the fuel pressure regulator. A line from the passenger tank Ys into the return line. Fuel flowing back to the driver side tank pulls fuel over from the passenger. If the driver's side tank is full, then the returning fuel spills over to the passenger tank via the top crossover tub.

Keith

01sscam

This is all new to me, I thought there were two pumps, I guess I was wrong.

SStheBest

iTrader: (2)

really?!?! i thought there were 2 pums as well...oh well learn somthin new everyday

viper9403

iTrader: (14)

This is correct

Robert56

iTrader: (2)

I thought there was two pumps also? Maybe only certain years? Like the 97/98 had the 2nd pump?
Anyway you should be fine as our pumps are considered good to about 500/550hp The injectors 42's will good for your overall shot. there a couple things you can do to extend the stock systems' capability. The hot wire trick, and/or a BAP will help. In my personal web site is a couple write ups on fuel system upgrades. Also, the math for sizing fuel needs and injector needs.
Robert