does anyone here know how to calibrate and innovate lc1 wideband to a haltech sprint re? coz I cant seem to calibrate mine right. the gauge reads right but the ecu doesn't.

 

how do you know which one is "right"?

there should be a file for calibration in the haltech software to allow you to alter the algorithm or to adjust the calibration per volt

 

because the gauge needs no calibration to the wide band to read what the wideband is reading, and it reads afrs that seem to be correct un like the ecu which reads afrs which cant be right based on how well the engine is running at the moment. and I did go in to the software and put in the afr per voltage but it was still wrong. I guess what Im asking is what do I set my afr per voltage to for an lc1 wideband?

 

i find there is often a small shift by a few points in the AFR result on the ecu plot ( leaner ) than the result indicated on the supplied gauge
.. and suspect this is due to internal resistance within the gauge itself
.. losses in signal voltage here show a slightly richer result on the gauge NOT the ecu

those two points of plot result prove to be consistent across the entire AFR range

how do i know which is wrong? .. well. on most LSU4.2 is that 2.35 V SHOULD display as stoic for the fuel chosen.. or lambda 1 ...


when i have a measured 2.35 volts on the output wire from wideband controller to the ecu.. the ecu reads lambda 1
( or 14.7 in petrol AFR mode.. or 15.5 in LPG AFR mode )

the gauge however .. is NOT ..and is indicating slightly richer than this

another proof is that while in LPG mode then the richest it can theoretically read is 10.6x:1
yet with my power valve tricked under 15 psi of boost i can get it to display as low as 10.4 on the gauge !!

its all gauge error.... but all good as long as i am aware of the reasons for it and the correction i need to mentally make

i suspect you are seeing the same sort of measurement error effecting the gauge display and would in fact trust the ecu reading as long as the calibration file is default lsu4.2 and is 2.35V at stoic

 

I put in the values that the paper work with the LC1 said it should be per volt. but then with the engine off it would read around 10 afrs then I flipped the volts per afr so it would read closer to full lean but then with the engine running it would read around 18 afrs wile the gauge read around 13.5 afrs and wouldn't go up and down smoothly. like it wasn't reading right.

 

Wideband Calibration:
0.000v= 7.35 AFR
5.000v= 22.39 AFR

Simulated Narrowband Calibration:
1.099v= 14.08 AFR
0.100v= 15.01 AFR

Make sure these numbers are in the LC-1 Software, then plug them into the Haltech ECU Manager's calibration page. My LC-1 is configured to output the full range on both outputs and wired so the gauge and ECU are on the same output so they both receive the exact same information. The greatest difference I've noticed between the two is 0.1 AFR, but it is otherwise dead-on.