RomRaider

My latest tune runs great (I would have to say it's the best one yet) with the exception of one problem. I seem to be seeing knock with light throttle (10-20%). I suppose it could just be engine noise but wanted some other opinions. See the attached logs.

Is your "latest" tune running with higher boost

Higher than stock yes but not higher than it's been. For a while I was having trouble hitting target. Now it hits target no problem. I know most of the time I get told not to worry about -KC when light on the throttle but this happens a lot more often than I would like.

I seriously doubt you are getting knock under vacuum. I wouldn't worry about it. Look up your fine learning knock load numbers and if the load is under the min value then that knock correction isn't really being applied to your timing.

That would then make it just engine noise? Right?

that's interesting.. maybe it is just engine noise.

Probably. Maybe you have something making noise in the engine compartment. Look at your transmission dipstick, it can get turned rest up against the turbo heatshield or touch the y-pipe (if yours is a duct or sti style) and vibrate. Also, check your turbo upper, turbo lower (if you have it), uppipe (if you have stocker), manifold heatshields for tightness.

Could be a screwy knock sensor too, but the rest of your numbers look all right, so it is hard to say.

Cool thanks for the peice of mind!

You might also want to check your grounds.

That has been on my list of too do. Maybe I'll make it a point to do that today! Thanks again for your help, you always seem to have good info to contribute!

No problem!

i get very similiar light throttle and even idle knock readings on my completely stock Liberty B4. Im pretty sure its just engine noise and is ignored because its below the load threshold.

But i am curious as to what causes it.