How the heck does the dyno get the wideband readings?

my autometer wideband gauge never shows me the same readings as my dyno sheet does.

my dyno sheet wideband readings look fine.

hwoever my wideband reading shows me too lean at wot on my wideband it shows 12-13 and then drops down to 11 for a split second (if i've let off) thers a big delay too ive only gone wide open throttle a few times..... so how do i know which one is more accurate?

i know they hooked up their standalone innovate wideband stuff in place of my autometer when tuning.. but aparently the tuner looks at both the innovate and whatever shows up on the dyno graph


so for cliff notes the question is

where does the dyno get its wideband readings? or how? also does anyone else's wideband have a delay? if i sit in park and hit the gas for a second like a quick rev. wideband wont do anything until ive already finished the quick rev.

 

Do you even have a wideband sensor or are you tapped into the narrowband sensor?

 

Dinos that I know use the Innovate wide band. I have an Innovate LM1 with a G2 gauge, it reads instantly and accurately. The last I have heard even Mike Troyer uses Innovate products for his dino tunes. This must be an issue with the Autometer set up, you may want to call their tech department to see if they have an answer to you're problem.

 

i do have a wideband. its on my downpipe about 6-8 inches after the turbo.

when they tune, they pull my wideband out and put in their wideband


im just scared that these readings i have are accurate, id rather them not be, id rather THEIR wideband and dyno results be what it is actually doing.

 

in that case im guessing my wideband just sux, cuz it definitely does not read instantly.. i step on the gas and it takse a second maybe 1.5 seconds before it starts to move.

so if i go wot for 3 seconds and let off.. the wideband wont show what it did until after ive already let off.. then it will dip where it should



theres the dyno sheet with their wideband setup... looks fine to me..

 

Don't panic! As suggested, call the Autometer tech support and get some help. You may have a simple prolem. How's your ground? Our Innovates ask for a dedicated ground to the engine block. This may be a place to start.

 

You also may be to close to the turbo outlet getting the wideband to hot which will give you false readings. Most of the Dynos I have seen around here use the tail pipe reading method, only a few will actually place there wideband in the exhaust before the cats in a bung if you have one available.

 

Innovate makes a heat sink for that purpose, it isolates the sensor from extreme exhaust heat, it would be for a universal application if needed.

 

okay so basically it should be an instant thing.


not a big delay.

i have a feeling everything is okay and its just my sensor and stuff.


i could care less about the sensor all i care about is that my a/f numbers are right.

 

The sensor is what gives you the A/F readings and all the gauge does is interperate that as a analog output. So I would be worried about the sensor so that you know exactly what your A/F ratio is.

Knowing what your A/F ratio is at the dyno is one thing, but everyday driving throws in different variables that will alter your A/F ratio especially in a forced induction application. I would check with the autometer instructions to see if they have a heater calibration and a free air calibration and do both.
Again being so close to your turbo outlet may also be a factor in the readings. If you can move the sensor farther down stream but in front of the cats they may give you a more accurate reading and do it instantly.

 

im goign to try a new sensor and see what happens.


autometers website says 'if the monitor responds sluggish, the sensor may be fouled and should be replaced'

well thats exactly what mines doing.. just extremely sluggish and seems its not giving a proper readout. we'll see wha thappens with a new o2.. if the new o2 does the same im going back to the tuner to see whats up.