Originally Posted by peteyturbo
I do emissions testing as well, specifically chassis and engine dyno testing and there is no possible way you will get data accurate enough to validate such small gains. Also you could have saved the money on the wb02's and had someone who knows what they are doing make you a custom tune via dsp or the like. I seriously doubt the superchips is accomplishing anything at all personally and even if you were to lean outthe vehicle to 16:1 without misfire or ill effects with adding timing advance at the same time the gains are negligible. I have tried on both Ethanol and gasoline and its not worth it imho. If I wanted to save money at the pump I wold not be driving a commander lol.
Hopefully I don't come off ass Debbie downer but it is what it is.
I don't disagree with what you're saying.
This is only one of several uses I have for the wide bands though- when HP Tuners finally offers support for the Jeeps, I'll be doing my own tuning. In the meantime, why not try some new ideas?
I do, however, disagree that a cruising afr of 16:1 won't gain you anything over a perturbating AFR around stoich. You won't lean misfire under light loads cruising at 16:1. Carb's vehicles ran this way decades ago...before all the fancy combustion technology we have now. Manufacturers only stay at stoich cruising nowadays for NOx control, NOT because slightly lean AFR's are unsafe for the engine!