Originally posted by warmonger:
Still, if you were able to make 300 wHP with 24# injectors and stock MAF, then I once again pose the question of:
WHY THE F'in HELL people are looking to slap 42#'rs in their cars???? 
Why? Well according to this table http://www.rceng.com/technical.htm, in order to run that much HP on 24s he needs around 100psi not including the psi to negate the boost psi. And that's at 100% injector duty cycle and .60 specific fuel consumption.
The reason it's BETTER to run larger injectors is so you can run the lowest fuel psi you can and keep your injector duty cycle at no more than 85%.
With 42s, he could run fuel pressure of 42psi at .60 specific fuel consumption and never see more than 85% injector duty cycle. Easier on the injectors and fuel pump that way.
When TurboTom first came to the Focaljet and said he was running 42s for 200whp everybody scoffed at him and now it's standard practice that to run 200whp safely on a Zetec you need 42s and that's why I bought them. So for V6s, if you want to run 300whp safely, you also need 42s.
Needles to say, what kind of fuel psi you runnin and UPGRADE YOUR INJECTORS QUICK!
2000 Rio Red I4 Cougar
200whp & 210wtq at 9psi
254whp & 276wtq with NX 35shot
WRX TD04 Turbo, Cut Short Shifter, Strut Tower Bar, 17" ZN Wheels, Roush Springs, Starion Intercooler, NX 35 shot, HKS SS BOV, Full 3" exhaust,StreetFlight Chip
| 
