View Full Version : RX-7 fuel calibration multiplier
Broken09
April 29th, 2008, 01:14 PM
On my setup I am running one primary 850cc injector and 2 1600cc secondary injectors. When determining the overall fuel calibration multiplier should I be using an I value of 4050cc or just base it off of the 850 primary?
Additionally, what setting should be used for injector events?
Enzo
April 29th, 2008, 02:30 PM
What ecu are you using?
Broken09
April 29th, 2008, 02:50 PM
I'm sorry... It's an SM4
Enzo
April 29th, 2008, 08:05 PM
I normally just adjust the multiplier until i idle with a VE number of around 60.
Why 2 1600cc secondaries?
Either way your base angles for inj will be 0 for rotor 1 and 180 for rotor 2.
so if your using 3 inj per rotor you can set your events to 0,0,0, 180,180,180
where inj 1/2/3 would be rotor 1 and 4/5/6 would be rotor 2
Broken09
April 29th, 2008, 08:58 PM
Thank you for the help.
Broken09
April 29th, 2008, 09:39 PM
Why 2 1600cc secondaries?
It's more of a safety thing then anything. Previously only had the two and pushing 20 lbs of boost the duty cycles were a bit higher than desired.
Drag_S14
May 1st, 2008, 09:26 AM
Why not just run a 1600 primary and secondary instead of 3 injectors per rotor? Or will that still not be enough fuel?
ABIEX
May 2nd, 2008, 07:53 AM
Iam going to run 3x1600cc per rotor, its about the fuel you are going to use!
Broken09
May 2nd, 2008, 03:52 PM
Why not just run a 1600 primary and secondary instead of 3 injectors per rotor? Or will that still not be enough fuel?
The lower intake manifold I have has provisions for 2 secondary injectors per rotor. The 850 primaries is a pretty standard setup
Drag_S14
May 4th, 2008, 06:10 AM
I know 850cc primaries are standard, just wondering with the control of the SM4 ecu, why not just run 2x 1600's, unless that isn't enough fuel.
Broken09
May 7th, 2008, 01:06 AM
I may have to do this anyway. It doesn't seem, or at least I haven't found where in the injector selection I would be able to run two different types of injectors.
Wroom
May 22nd, 2008, 07:52 AM
Take a look at M1 / Injectors /InjectorO/P&Events
Select 33 for three "cylinders". Then take a look at advanced settings tab in the same popup menu to set timing for the injectors.
Then you can use the injector trims to set up the staged injectors.
Must say i'm not so expert on staged injector setup. Maybe we should have some guide for setting this up?