Fuel System Damper, why not? Options

[yarin]

I couldn't find that much info on here.... Pelican lists a damper in the FI system.

http://www.pelicanparts.com/914/Parts/Fuel...system1_big.htm

Which years and which systems include this? Why leave it out?

I'm building a MS system, do i need a damper in the system? Thanks

[Twystd1]

Cut and pasted from the net. Cause I don't know shit bout this.

1:
Whenever multiple high-flow injectors are installed on a fuel rail, hydraulic pulsations from the injectors opening and closing cause the fuel to “hammer” back and forth. This creates pressure and flow variations within the rail and can lead to large inconsistencies in fuel delivery from cylinder to cylinder. A damper is used to absorb these pressure fluctuations and allow each injector to receive the proper amount of fuel pressure and flow, eliminating rich or lean cylinders, etc.

2: NOTE: Some factory cars have fuel dampers from the factory. Toyota, Nissan, Mazda RX-7 etc.

3: Dampers are placed specific to each combination. Some are a simple diaphragm located after the in tank fuel pump and before the fuel filter. Some are at the fuel rail. It depends on the specific application.

4: According to a couple of ricer guys. Several BIG Racers (eech) use large dampers at the end of their fuel rails.

5: Some dampers are spring loaded to help dampen. Some are simple cannisters with a foam interior. And some are air cushioned.

Thats all I know from Google.

Obviously they have some use. As so many factory cars have them.

Twystd1

Note: If any of this data is incorrect. Blame it on Slits.. Just because...