Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB - View Single Post - Direct injection/port injection explained?

mike the snake · 11-06-2013, 06:15 PM

Thanks, that helps.

What about something a little more in-depth? Like when does one or the other turn on, or off? When are both on?

I'm getting my car tuned in a week or 2, and was hoping I could have a better understanding of just how my tuner is going to figure out which type of FI is used and when.

For FI (I'm getting a FB kit installed) at WOT, dose the tuner run the DI at say, 90% and then just ramp the PI up as needed?

What about partial throttle? Does the ECU switch between PI and DI or use both together instantly?

Edit: Just watched that little vid and that explains things very well. Thanks very much!

11-06-2013, 06:15 PM	#4
mike the snake Senior Member Join Date: Jul 2013 Drives: 2013 BRZ Location: Norcal Posts: 1,592 Thanks: 1 Thanked 623 Times in 378 Posts Mentioned: 15 Post(s) Tagged: 0 Thread(s)	Thanks, that helps. What about something a little more in-depth? Like when does one or the other turn on, or off? When are both on? I'm getting my car tuned in a week or 2, and was hoping I could have a better understanding of just how my tuner is going to figure out which type of FI is used and when. For FI (I'm getting a FB kit installed) at WOT, dose the tuner run the DI at say, 90% and then just ramp the PI up as needed? What about partial throttle? Does the ECU switch between PI and DI or use both together instantly? Edit: Just watched that little vid and that explains things very well. Thanks very much!