Originally Posted by HDDP
I finally got the specs on the SRT6 injectors from my SPY at Bosch 
I must say, they have a HUGE flow difference from the NA engine and now I have to figure out how the SC engine is regulating the flow, whether by pulse width or pressure regulator.
NA ENGINE: 17 lbs/hr at 3.8 Bar, or 55 psi/ 14.5 ohms.
SC ENGINE: 51.6 lbs/hr @ 55.1 PSI / 14.5 Ohms based on 380 kPA = 3.8 bars = 55.1 PSI
But, this leads me to wonder if the NA engine would benefit from an injector swap...
EXACTLY ! but what our non-SRT 3.2 motors need is a SLIGHT upgrade from 17 lbs./Hr. injectors to perhaps 20-24 lbs./Hr. units.
The SRT6 injectors are going to be WAY TOO BIG.
When I was working with FoMoCo 4.6 SOHC "Mod-Motors" Stock injectors were 17 lbs./Hr. Upgrade injectors for better head/intake/cam/exhaust combos were typically 24 lbs./Hr. SUPERCHARGED applications went with 30 or 36 lbs./Hr units.
So here's what I think we need; An
OEM Mercedes/Bosch injector rated @ 22-24 lbs./Hr!!!
With the widely used Bosch/Speed Innovations/Upsolute/Powerchip ECU download "flash", a lower restriction exhaust and 10-15% more fuel delivery under WOT conditions we might expect to see 245-250 Horsepower.
Now THAT would be nice !
Slim