A/F/R gauge for tuning
Any one use a Air Fuel gauge for tuning at home? And if so, is it worth it? Last question, is there one that you recommend that's not super expensive that works?
My answer is yes and no, yes and no, can't answer without knowing your definition of super expensive.
- Yes but its a logger not a gage.
- Yes it was worth it, but now I've learned that a lot of tuning can be done without it.
- Depending on your needs or interest, it may be more economical to spend a 1/2 day or at least an hour two on a dyno, o go to a drag strip. Advantage of the dyno will be that even a tail pipe sniffer can be used to see if AFR is drifting due to over emulsion or incorrect HSAB to jet relationship. The scale may need to be expanded a but the trend will be there.
Lots of discussion on the gages which should provide some insight into the uses and issues.
The real question is what do you want it to do?
If you are aiming for air fuel ratios, then you've been misled.
What a WBO2 does is give you references points to observe changes.
Then those readings can be compared with
changes in performance that can be compared with
a particular change in fuel to air intake.
A gage allows observation of steady conditions.
A logger allows observation of both steady and changing conditions in conjunction with other inputs such as rpm, vacuum (MAP), throttle position, etc.
In addition to the learning curve on the tuning side, there is learning curve for the hardware setup, and for a logger, the software.
Drag strip examples of using a WBO2 and logger starting at this post:
Proform 850 dialing it in closer
Some Dyno and street examples first cpouple of pages here
100 cfm more with anular and downleg boosters can't beat AFR
Finally, whatever you chose to do, Tune for Performance.
Wideband UEGO Air/Fuel Sensor
