What to tune with red top svo injectors?

[dirt_track_racer_81]

I got some 30lb svo red top injectors off a mustang i was working on and im goin to put these on my truck, what all do i need to do in the tune to get these to work properly..its a 2000 chevy truck with a 6.0 230/226 .597/.573 cam, 241 heads, ls1 intake, Custom OS and Speed Density tune,
also running an aftermarket fuel pressure regulator and its set to 60 psi

[Black02SS]

Setup your IFR table and adjust you rmin/default pulse width and you are all set.

[dirt_track_racer_81]

Setup your IFR table and adjust you rmin/default pulse width and you are all set.

thats easy for you to say lol..is there a tutorial to setting that up on here? setting up injectors is the only thing that i really havent figured out yet..

[kbracing96]

30lbs SVO's I believe are rated at 43.5 psi. so at 60 psi, they will be 41.379 lbs. Should be able to put that across the board in your IFR table as long as your pressure reg is vac referenced and be good

[Rhino79]

thats easy for you to say lol..is there a tutorial to setting that up on here? setting up injectors is the only thing that i really havent figured out yet..

First off, wecome to another PT.NET member, remember that the SVO's are rated at 43 p.s.i., and your system runs approx 58 p.s.i, so you'll need to enter them in the injector flow rate table around 36 lbers to start with.

[Rhino79]

30lbs SVO's I believe are rated at 43.5 psi. so at 60 psi, they will be 41.379 lbs. Should be able to put that across the board in your IFR table as long as your pressure reg is vac referenced and be good

KB, how are you figuring the IRF, I am not saying you're wrong as I probably am, but I used Redhardsupra's spreadsheet and came up with 36 lb/hr.

[kbracing96]

30Lbs/hr / 43.5lbs *60lbs=41.379 Makes since to me???

[joecar]

Remove the MAP reference line and measure fuel rail pressure, call this 60 psi;

(if you don't wan't to remove the reference line, calculate rail pressure - MAP + BARO, using the same units thru-out)
(repeat for various values of MAP vs rail pressure, do the calculation each time, and take the average when done).

Then go: rate = 30 lb/hr * sqrt(60 psi / 43.5 psi) = 35.23 lb/hr = 4.438 g/s

Must have the squareroot since flowrate goes as the sqrt of pressure difference.

[kbracing96]

Remove the MAP reference line and measure fuel rail pressure, call this 60 psi;

(if you don't wan't to remove the reference line, calculate rail pressure - MAP + BARO, using the same units thru-out)
(repeat for various values of MAP vs rail pressure, and do the calculation each time, and take the average when done).

Then go: rate = 30 lb/hr * sqrt(60 psi / 43.5 psi) = 35.2 lb/hr = 4.438 g/s

Must have the squareroot since rate goes as the sqrt of pressure difference.

Ok, so he need to put 35.2 lb/hr in the table, I didn't know about the sqrt part. Thanks Joe!

[joecar]

Ok, so he need to put 35.2 lb/hr in the table, I didn't know about the sqrt part. Thanks Joe!