Tip:Calculate new injector flow based on pressure increase
 

So you know an injector flows 550cc at 40 psi, now you want to know how much it flows at 50 or 60 psi. This simple formula will allow you to calculate it quickly. Works for aux injection systems, fuel injection systems, hell it will even work on your sewer system if you really cared to know.

SQRT(New Pressure / Old Pressure) X Old Flow Rate= New Flow

We'll use the above 550cc @ 40psi base pressure as an example.
example: New pressure = 50psi, old pressure = 40 psi, old flow rate = 550cc

So hit square root on your calculator, enter 50 divided by 40, then multiply times 550= 687cc <---- this is your new flow

Good info ,thanks

I need to see a fuel calculator ,what size injector ,injectors, for x amount of power .Do you have one ?

yeah this is the one I like to use.

http://www.maxcooper.com/rx7/how-to/...tem/calcs.html

Thank you for your time .

Great info, thanks. I will keep this for future use.

No problem. I use the formula all the time
Here is another great link, shows flow graphs for a lot of popular pumps both stock and after-market.

http://www.stealth316.com/2-fuelpumpguide.htm

Here is one of many graphs as an example.
http://www.stealth316.com/images/flowtest-denso.gif

found this site to be really helpful

http://kgparts.com/index.php?page=fuel-calc

I occasionally use this one as well:

http://www.rceng.com/technical.aspx#WORKSHEET