Vs level3 fuel cal issue

Ecu Hardware Modifications
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Re: Vs level3 fuel cal issue

Postby ben044 » Sun Nov 05, 2017 12:52 pm

Could i use a jaycar corrector to change the signal

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Re: Vs level3 fuel cal issue

Postby VL400 » Sun Nov 05, 2017 7:25 pm

Need an adjustable PWM signal, not frequency like the speedo corrector does.

Haltech cant help? If its outputting something then surely it can be adjusted, but then again maybe not :lol:

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Re: Vs level3 fuel cal issue

Postby ben044 » Sun Nov 05, 2017 7:33 pm

I could change flow rate in the haltech but then it would throw all my fuel rates out of wack. It was pretty close with my old injectors in but now that i have went bigger and changed tje rates in the haltech its thrown the dash out and the cal in the cluster needs to be 303 but it doesnt go that low.

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Re: Vs level3 fuel cal issue

Postby ben044 » Sun Nov 05, 2017 7:36 pm

I jave found this. But they dont make the hand controller anymore
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Screenshot_20171105-182235.png

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Re: Vs level3 fuel cal issue

Postby ben044 » Sun Nov 05, 2017 7:38 pm

Here is the pulse controller. They still make this bit but no way of controlling it
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Screenshot_20171105-175959.png

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Re: Vs level3 fuel cal issue

Postby VL400 » Mon Nov 06, 2017 8:44 am

ben044 wrote:I could change flow rate in the haltech but then it would throw all my fuel rates out of wack.

Was thinking more that the trip computer output of the haltech might be adjusted independently of the injector rate, like the delco does. A question for haltech, although based on a quick google it seems others have asked the question and never got a response.

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Re: Vs level3 fuel cal issue

Postby The1 » Tue Nov 07, 2017 11:14 am

VL400 wrote: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.


my bad, so yeh would need some kind of frequency adjuster or divider? then recal back on target in the cluster. easiest would be a cal adjustment in the ecu if it has one for it. It's obviously outputting the required PWM.

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Re: Vs level3 fuel cal issue

Postby VL400 » Tue Nov 07, 2017 9:22 pm

Yeah seeing as there is something being output already, should be possible to adjust you would think.

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