Checking plugs is probably just as or more important, but when we get down to it, 99% of us aren't going to check the plugs, but should.

For us that have trucks on the aggressive or wild side, plugs are critical.
I for one check mine in the ol truck, but I don't in the avalanche.
It's just not convenient for me to do that on a daily driver that is only running 8psi.

Also, as important as plugs are, nobody out there is going to pay for the extra labor to pull the plugs several times when they have a wideband to tune from.
Some will, and some know the importance of plug reading, but most wont.
Most don't even know how to read them, or when it's important to read them, or even know when to shut the truck off so you get an accurate analysis.

I'm a believer of checking plugs and a/f ratio, but i only do this for FREE on my own vehicles, hahah.


Has anyone seen or used the Innovate 10port data acquisition unit that allows 10 or so sensors to be used at one time. I've always wanted to get that, but it'd be hell to weld in 8 bungs and my setup has stock manifolds, so really not the right setup for that.