i've done a search and come up with some of the info i need but i still don't think i get it.
is the purpouse of a stand alone fuel system to not rely on the stock pump? so it will be safer by relying on its own pump.

i am currently running a 150 shot through dave plate and i have the stock pump still also timming is still stock. i would like to replace it soon with a racetronix pump for future mods and would like to stick with n2o and eventualy do a dual stage. another question is since i can put race gas in the cell could i run a bigger shot since it has its own pump? the reason i would like to do a 200 wet shot progressed and a 75-100 dry shot. i just dont want to run out of fuel.

Thanks
Eric

 

A few main reasons for a stand alone system.

1. To keep from getting a lean spike. When pulling from the stock fuel rails it can have a lean spike when the nitrous hits due to a sudden drop in fuel pressure.

2. Have a more adequate supply of fuel. The stock fuel lines and rails can only flow so much. When pulling from the rails for nitrous....it can starve the whole system of fuel.

3. As stated you can run high octane fuel in the stand alone and run pump gas in the tank. This will allow you to run a larger shot than normal.

4. You have the ability to run low pressure in a stand alone.

 

i have harris speed works stand alone and i agree with what tony said you dont have to worry about inadequate fuel and you can run a little more timing with less chance of detonation

 

thank you guys that helped alot.

 

No prob.

Also make sure you keep the cell at least half full.

 

I run a dual stage like you are talking about doing and 125dry 1st,, 100wet 2nd.. And i picked up a Harris Stand Alone so i could safely run that shot. Great investment. Also have racetronix kit and bigger injectors.. Good Luck

 

thanks nasty hawk, do you have any of the shot progressed? also whats ur timming set at?

what are the benifits of running low pressure over high?

 

I have the First stage on a window switch and the Second stage is on a first gear lock-out box also ran through a timing tuner. Not sure how much timing, I always just let Harris Speed Works take care of it. I dont even attemp to play Mr. Mechanic.

 

there was just a discussion about the difference between low and high pressure

 

do u happen to have the link