constantly changing voltage offset on wideband?

kaj · Post by **kaj** » Mon Aug 07, 2006 6:14 pm

again, i searched to no avail.

pretty much EVERY time i start my car, i have to RE adjust the voltage for my wideband so that the hondata reads the same as my wideband display.

does anyone else have this problem and, if so, what did you do about it?

Post by **Spunkster** » Tue Aug 08, 2006 9:12 am

What wideband are you using?

kaj · Post by **kaj** » Tue Aug 08, 2006 11:53 am

Spunkster wrote:What wideband are you using?

oh, sorry. PLX M-series. i'm stumped. my tuner and i have both had issues. it's very hard to tune the car for cold start when we have to first take time to play with the wideband voltage readings :( i've attatched my cal. file.

Post by **Spunkster** » Tue Aug 08, 2006 12:28 pm

This sounds like something you will need to talk to PLX Devices about.

turbosi92 · Post by **turbosi92** » Tue Aug 08, 2006 1:04 pm

I have a simliar issue.

How is your hooked up? Power, Ground in particular?

kaj · Post by **kaj** » Tue Aug 08, 2006 1:05 pm

turbosi92 wrote:I have a simliar issue.

How is your hooked up? Power, Ground in particular?

PLX? power from cigarette lighter, grounded to chassis.

Post by **Spunkster** » Tue Aug 08, 2006 1:27 pm

You will be much better off connecting it into the fuse box on one of the ignition switched pins.

kaj · Post by **kaj** » Tue Aug 08, 2006 6:02 pm

Spunkster wrote:You will be much better off connecting it into the fuse box on one of the ignition switched pins.

i'll give that a shot and let you guys know if there is any noticed improvements. :D

TurboGSR96 · Post by **TurboGSR96** » Wed Aug 09, 2006 6:59 am

kaj wrote:
Spunkster wrote:You will be much better off connecting it into the fuse box on one of the ignition switched pins.
i'll give that a shot and let you guys know if there is any noticed improvements. :D

I have 4 gagues and a boost controller all hooked up to the pins @ the fuse box.

TurboLS · Post by **TurboLS** » Sat Aug 12, 2006 10:23 pm

when you do cold start, do have the PLX on for a while before you start the car?? If not, remember that the O2 sensor has to warm up. It reads 14.7 no matter what for a few minutes until it has been sufficiently heated. I also have noticed that the readings between Hondata and the PLX meter display are not exact. There is a range of voltages for each A/F reading. These also depend on whether the car is increasing load or decreasing load.

I tackled this problem a lot in the PLX forums. http://www.plxdevices.com/forum/viewtop ... sc&start=0