TunerPro RT users. Need help determining injector on-time when data logging.
Thread Starter
Supreme Member
Joined: Jun 2005
Posts: 1,440
Likes: 2
From: huntsville, al
Car: 89 IROC
Engine: 6.8 HSR N2O
Transmission: TKO 600
Axle/Gears: 9" Moser 3.50 True trac
TunerPro RT users. Need help determining injector on-time when data logging.
I'm using TunerPro RT for data logging. Everything is working fine.
The readouts give a value for injector pulse width. How do I know what the injector on-time percentage is? E.g. 80% duty cycle.
The readouts give a value for injector pulse width. How do I know what the injector on-time percentage is? E.g. 80% duty cycle.
Moderator
iTrader: (1)
Joined: Mar 2002
Posts: 18,432
Likes: 233
From: Chasing Electrons
Car: check
Engine: check
Transmission: check
Re: TunerPro RT users. Need help determining injector on-time when data logging.
You need to take RPM into account along with single & double fire (Note: this is for a MPFI setup). You can assume double fire for most of the time, then factor in the RPM.
RPM / 60 = RPSeconds
Then invert it for frequency. That gives the time available to fire the injector. Divide for the ratio of PW to Time and get DC%.
RBob.
RPM / 60 = RPSeconds
Then invert it for frequency. That gives the time available to fire the injector. Divide for the ratio of PW to Time and get DC%.
RBob.
Thread
Thread Starter
Forum
Replies
Last Post
thejimsterz28
Engine/Drivetrain/Suspension Parts for Sale
4
Sep 15, 2015 04:37 PM
