DarkWarrior

Need some advice.

I am planning on replacing my stock 24lb injectors on my 94 with 86k miles.

I also plan on getting head and intake porting from Elliott in about 6 months and he suggests 30lb. injectors for this.

Problem is that I am replacing fuel pump and filter as well and want to replace the injectors at the same time.

Can I use the 30lb. injectors now?
Will I need an AFPR, if so what pressure do I use?

On a side note, does anyone have any experience with the Metco MFR0003 92-97 Corvette Fuel Pressure Regulator?

Any advice/suggestions would be greatly appreciated.

James93LT1

You will need a new tune if you install the new injectors, so best advice will be to wait till you do your heads, so that you tune only once.

96GS#007

You can Google injector sizing and find the required pressure if you simply have to replace the injectors. You'll probably need to run around 33-35psi vs the stock 43. The equation is not linear, so you'll need to look it up and plug in the info.

FWIW, Not all injectors are rated at the same pressure (for example, Ford injectors are rated at 39psi). In addition, the injector offsets can be different...different types open/close at different rates...so you'll need to know that info as well when tuning.

DarkWarrior

Thanks for the responses.

I spoke with John today at FIC, I will be purchasing the Bosch III 30lb injectors.
Any particular info these injectors.

Also any input on the Metco AFPR?

Klondike

You did good to talk to John at FIC! He can tell you everything you need to know about setting it up correctly.
I'd like to find out myself if an after mkt. regulator has any advantages over the stock one as far as precision control, or if it is wasted effort on a mostly stock engine.