ChefJ

What calibration for the injector should I use on the firmware that will work with the bosch 1000 cc injectors? The 1000cc RC injector calibration is for a 3ohm injector.
Thanks..

candymanjl

I'd ask Tony at T1, he sells them with the calibration table for the aem.

ChefJ

thats who I got them from. maybe he'll chime in.

neeman77

im also interested in this info

tony1

Don't use any of those cals. Instead of using the injector wizard, you want to go to the table or graph and input the dead time values from the instruction sheet for the fuel pressure you're running.

Using a similar size injector from the wizard is not right at all.

Call me at the shop if you have any questions and i'll walk to through it, but it's very simple.

The injector setup is only for dead time compensation, it doesn't recalibrate the fuel map for the injector size or anything.

siadam

Good question, I'll be in the same boat very shortly.

ChefJ

Hmm.. Now the question is what is my fuel pressure. The problem there is I am running on the stock rail with stock fpr.

ChefJ

From the info I gathered the stock fuel pressure is around 50psi. I am running a walbro 255 but I have read that it only effects flow until it is restricted by the fpr. I guess I will go with the 50psi spread and see where it goes. It will run on the other settings as the tune is for my setup +650cc injectors.

candymanjl

yeah the S is a little higher fuel pressure than the standard ~43 psi a lot of cars run. and your right, the fuel pump alone will not raise the pressure, it just flows enough fuel to support more HP than the stock pump will. you need an adjustable FPR to raise or lower the fuel pressure.

ChefJ

I am assuming I am running slightly higher then 50 as at the 50psi level I couldn't lean the idle out at all. I used a 1 in the ems cal fuel table and it was still at 10.3:1 afr. Gonna have to play a guessing game until I get to the tuner in 2 weeks.