Vs level3 fuel cal issue

Ecu Hardware Modifications
ben044
Posts: 71
Joined: Tue May 27, 2014 7:37 am
cars: vs 5l ute, hq 304 one tonner, ve sv6 wagon

Vs level3 fuel cal issue

Post by ben044 »

I need some help from some tech savvy guys.
What i need to do is try to trick this signal going to my cluster so i can get my fuel usage readings correct, as i cant get the cal in the cluster low enough for the larger 440cc injectors
Attachments
Screenshot_20171103-193434.jpg
Dylan
Posts: 3355
Joined: Mon Aug 02, 2010 6:35 pm
cars: VR Commodore V8

Re: Vs level3 fuel cal issue

Post by Dylan »

There is a fine cal in the dash I've sent it before.
ben044
Posts: 71
Joined: Tue May 27, 2014 7:37 am
cars: vs 5l ute, hq 304 one tonner, ve sv6 wagon

Re: Vs level3 fuel cal issue

Post by ben044 »

Tried it. I cant get it low enough for the bigger injectors
Dylan
Posts: 3355
Joined: Mon Aug 02, 2010 6:35 pm
cars: VR Commodore V8

Re: Vs level3 fuel cal issue

Post by Dylan »

Have you changed the engine calibration to suit?
User avatar
The1
Posts: 4694
Joined: Mon Jan 04, 2010 10:23 am

Re: Vs level3 fuel cal issue

Post by The1 »

use these in the xdf

Trip Computer - Amount of Fuel for 1/512 DU

Trip Computer - Litre/Hr INST Fuel Rate CAL
ben044
Posts: 71
Joined: Tue May 27, 2014 7:37 am
cars: vs 5l ute, hq 304 one tonner, ve sv6 wagon

Re: Vs level3 fuel cal issue

Post by ben044 »

Forgot to mention im using a haltech gm platinum
User avatar
The1
Posts: 4694
Joined: Mon Jan 04, 2010 10:23 am

Re: Vs level3 fuel cal issue

Post by The1 »

sounds like you've shafted yourself then. It's serial data from ECU to Cluster, you'd have to replicate the 8192 message.
ben044
Posts: 71
Joined: Tue May 27, 2014 7:37 am
cars: vs 5l ute, hq 304 one tonner, ve sv6 wagon

Re: Vs level3 fuel cal issue

Post by ben044 »

Do u know what kind of signal it is. Could i just fit a jaycar corrector to change the signal
User avatar
The1
Posts: 4694
Joined: Mon Jan 04, 2010 10:23 am

Re: Vs level3 fuel cal issue

Post by The1 »

your ecu will not have that data in the first place. it's nothing to do with speed signal. If you want the level 3 data to work you'l need the factory ecu.
User avatar
VL400
Posts: 4991
Joined: Sun Mar 01, 2009 2:54 pm
cars: VL Calais and Toyota Landcruiser. Plus some toys :)
Location: Perth, WA
Contact:

Re: Vs level3 fuel cal issue

Post by VL400 »

VS fuel usage signal is a PWM signal, not 8192 baud data. VT was the first to use 8192 baud data for the trip computer.

The PCM accumulates the inj PW and outputs them in a PWM signal according to the calibration figure above that the1 noted, it specifies the amount of fuel per bit in teh PWM signal.
Post Reply