Some useful info off the other board.


"Hi Guys, There's been a good deal of talk lately about what size injectors and fuel pressure you need to support higher power that comes from FI systems. Here's an excellent link that provides all of the data required to specify a corectly sized injector for any power level, you just plug in the data and the calculator specifies the correct sized injectors that you need.

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

From this work sheet you can clearly see that the stock injector even at very high fuel presure cannot safely support the power from forced induction systems safely.

From recent testing at APS the stock VQ fuel injector flows 328 cc at 100% duty cycle at 43.5 psi fuel pressure, 376 cc at 100% duty cycle at 58 psi fuel pressure and 412 cc at 100% duty cycle at 72.5 psi fuel pressure. The site recomends that the fuel injectors should not run at above 80% duty cycle so please take that into account when making your calculations, have fun."

 

Nice find!!!

 

Full thread can be found at,

http://www.350zmotoring.com/forums/s...43&postcount=1