knock on rev

[LTQuick]

I just got my datalogger cord a few days ago and hooked it up using mmcd to log. As soon as I installed it and figured out the logger I notice that when I rev in neutral and accrelaerate quickly from a low rpm in first and sometimes second gear that I knock. Does anyone know what may be causing this? Is it a fuel filter? And am I really hurting my eninge bad driving it like this?
Thanks

 

[chaye]

it could be that your running lean....or too rich.
are u able to log A/F ratios?

 

[LTQuick]

I think I can log O2sensor voltage, wich is the same thing. But why would I be running lean more on a neutral rev than when I hit boost. If I take off from like 2.5k and hit boost it doesn't knock.

 

[LTQuick]

The O2 voltage is usally between .85 and .9 on most knock instances, making it look unrealted to running lean.

 

[chaye]

you know mine does the same if i just rev it with no load on it...

well i guess the question would now be, does it knock when your driving?