The stock timing is 0* so, if I add a 100 shot NOS kit would it be alright to keep the timing where it is? On the NOS site it says the stock timing does not have to be changed using their kits.

 

If you are running 0* timing you should be fine.

 

Your stock timing is 0*? How slow is your car? w/ that timing you could run a 150 shot and not have to change a thing as far as timing goes.

 

originally posted by Free Bird:
Certain F bodies are timed (base timing) at 0° BTDC after disabling the ECMs timing control by unpluging a wire connector near the distributor. On those certain cars, that is the stock spec for base ditributor timing with no input from the ECM. When you plug the wires back together the ECM then adds the timing advance that it is calibrated to.

I'd say that is the 0° he's talking about.

 

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Thanks IROCKZ4me, thats what I meant about my stock 0* timing. Does the computer compensate for the added nitrous and add the appropriate fuel?

 

Originally posted by GKK:
I don't know which NOS kit you are using, but they have produced a few different styles over the years.
A wet kit injects both nitrous and fuel, using a seperate nitrous solenoid and fuel solenoid. The ECM has no way of "knowing" the wet system is there.
A dry kit injects only nitrous and requires the original fuel injectors to supply the needed extra fuel.
NOS has made two different type dry kits that I know of. The first used an electronic module that plugged into the stock ECM to alter (increase) the pulse to the fuel injectors when the system is activated. Opening the injectors longer supplies the extra fuel. The other used a mechanical device that used nitrous system pressure to increase the stock fuel pressure regulators pressure when the system is activated. With this type the ECM doesn't know the nitrous system is there either.

 

I want to get the Wet NOS kit 05153 for my 305 tbi. I'm running 12psi fuel pressure with other mods in my signature.