Olybaltss

I've got an LSJ, catless and airbox mod on no tune, about 120K miles.

I've noticed recently that i can oftentimes hear a rattling sound coming from the engine bay. It seems to be most noticeable with the heater on, as if it amplifies the problem, but it can still occasionally be heard W/out the heater.

My assumption, based on mileage and maintenance, is that it's likely the timing tensioner or something to that effect. Just didn't know if the heater would have any impact on volume or if i'm likely imagining that.