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-   -   Req Fuel Calculator acting all weird (https://www.miataturbo.net/megasquirt-18/req-fuel-calculator-acting-all-weird-84149/)

DNMakinson 04-30-2015 04:51 PM

With MS3, one already has 10X VE table resolution, so fudging for 200 max VE is not needed.

I agree that the "point" nomenclature is nearly always confusing. Does 2 points mean 2.0 or 0.2. Personally, I would prefer we say 2.0 or 0.2. But I'm like that. my :2cents:

Questions: If one has a plugged spare O2 bung, upstream of the cat, that can be accessed from below the car, do dyno operators typically have a sensor that they can install there, and will they? Is that a question that should be asked of a shop before deciding whom to use?

mlev 04-30-2015 05:04 PM


Originally Posted by DNMakinson (Post 1227811)
...plugged bung...

:rofl:

EO2K 04-30-2015 07:16 PM


Originally Posted by 18psi (Post 1227809)
If you want accurate, get the CAN module from Rev and run serial. win/win/win. no guesswork, only win

Seriously. Once you go serial you never go back.

codrus 04-30-2015 09:48 PM


Originally Posted by EO2K (Post 1227845)
Seriously. Once you go serial you never go back.

+1 on the Reverant serial-to-CAN conversion box. It puts an end to stupid ground errors.

--Ian

Braineack 05-01-2015 07:14 AM

but then you still need to assume the controller is reading the sensor correctly, and the sensor is outputting correctly.

youll just know for sure the readings from the controller are the exact readings it wanted you to see.


what really helps is if you actually calibrate TS correctly for an AEM gauge.

DNMakinson 05-01-2015 07:53 AM


Originally Posted by Braineack (Post 1227920)
1) but then you still need to assume the controller is reading the sensor correctly, and the sensor is outputting correctly.

2) youll just know for sure the readings from the controller are the exact readings it wanted you to see.


3) what really helps is if you actually calibrate TS correctly for an AEM gauge.

(Numbers added by me)

How will Item 3 overcome Items 1 and 2?

EDIT* Do you mean calibrate against a known better system at a dyno shop?

Braineack 05-01-2015 08:06 AM

#1 and #2 happen to all.

Lc-2 or AEM, how do you know that the controller is telling you accurate results? You just to trust it's close unless you are able to compare it next to something else, which you also have to trust is accurate.

#3 is at least an ezpz way to get the controller and TS within .2 point of each other, not 2 full points.

AEM needs to be calibrated for 10-18.5 AFR and 0-4.25v. or in layman's terms: ~half the resolution of an innovate wideband*.

I don't believe the "aem uego" calibration in TS is setup to match the actual output, so you need to do it manually.





*the uego = 0.125v for every 1/4 point of AFR.
the innovate = 0.075v for every 1/4 point of AFR.

stefanst 05-01-2015 08:48 AM


Originally Posted by Braineack (Post 1227926)
....
AEM needs to be calibrated for 10-18.5 AFR and 0-4.25v. or in layman's terms: ~half the resolution of an innovate wideband*.
...
*the uego = 0.125v for every 1/4 point of AFR.
the innovate = 0.075v for every 1/4 point of AFR.

Doesn't that mean the uego has TWICE the resolution?

Braineack 05-01-2015 09:22 AM

maybe? within the confounds of 10-18 in that configuration, sure.

but you can also program the innovate to output 10-18AFR @ 0-5v. where the innovate would be .075v for every 1/8 point of AFR.


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