Stock injectors for VG30DETT is top feed 370cc. At 3 bar fuel pressure, they max out around 350rwhp
or 400bhp. More power might be realized by raising fuel pressure.
555cc injectors are good for 500-530rwhp safely at stock fuel pressure.
720cc and 740cc are good for 700+rwhp. Nissmo no longer makes 720cc. 740cc injectors will fit on
Another alternative is Border 850cc fuel kit. Good for 800+rwhp. Comes with billet fuel rail and
I personally wound not recommend RC engineering's bored out injectors. They have been known to leak
under raised fuel pressure. Besides, I wouldn't push/bore the stock 370cc too far.
Stock fuel line/pump is good for 600rwhp. To achieve more hp, both will need to be changed. Stock
TT fuel pump is rated 255ltr/hr.
How big of a fuel pump do you need?
Fuel needed=(size of injector) x (number of injectors) x (injector duty cycle)
For example, if you have 850cc injector in our V6 VG30DETT engine and you don't want more than injectors
to be on open more than 80% of the time,
Fuel = (.850liter/minute) x 6 x 0.80 = 4.08 liter/minute = 245 liter/hour
Finally, as fuel pressure increases, fuel pump flow rate decrease for most pumps. It's a linear decrease.
The rate depends on the specific pump.