Vs level3 fuel cal issue

Ecu Hardware Modifications
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Vs level3 fuel cal issue

Postby ben044 » Fri Nov 03, 2017 8:17 pm

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
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Re: Vs level3 fuel cal issue

Postby Dylan » Fri Nov 03, 2017 8:21 pm

There is a fine cal in the dash I've sent it before.

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Re: Vs level3 fuel cal issue

Postby ben044 » Fri Nov 03, 2017 8:24 pm

Tried it. I cant get it low enough for the bigger injectors

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Re: Vs level3 fuel cal issue

Postby Dylan » Fri Nov 03, 2017 8:47 pm

Have you changed the engine calibration to suit?

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Re: Vs level3 fuel cal issue

Postby The1 » Fri Nov 03, 2017 8:49 pm

use these in the xdf

Trip Computer - Amount of Fuel for 1/512 DU

Trip Computer - Litre/Hr INST Fuel Rate CAL

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Re: Vs level3 fuel cal issue

Postby ben044 » Fri Nov 03, 2017 8:51 pm

Forgot to mention im using a haltech gm platinum

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Re: Vs level3 fuel cal issue

Postby The1 » Sun Nov 05, 2017 10:22 am

sounds like you've shafted yourself then. It's serial data from ECU to Cluster, you'd have to replicate the 8192 message.

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Re: Vs level3 fuel cal issue

Postby ben044 » Sun Nov 05, 2017 12:17 pm

Do u know what kind of signal it is. Could i just fit a jaycar corrector to change the signal

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Re: Vs level3 fuel cal issue

Postby The1 » Sun Nov 05, 2017 12:19 pm

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.

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Re: Vs level3 fuel cal issue

Postby VL400 » Sun Nov 05, 2017 12:37 pm

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.

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