daves4

I used to hear this in the rear, and it was my rear wheel bearings. Did the turn right/turn left and sound went away for those, and that helped confirm that. Had them replaced. All is well.

Similar sound now coming from front, but the turn right/turn left 'test' isn't so conclusive. Suggestions of what it would be if not front wheel bearings? Or, better yet, how can I determine for sure (beside swapping them) that it is the front wheel bearings?

Thanx in advance for any help!

BlackS4tt (Josh)

could be your tires

daves4

Also, I would *think* that tire noise would get louder, not just be between 35-40 mph, and not kinda 'go away'.

k04/rs6north

'Droning' usually = bearings

Distinct

LOL, I like the name change.

zeus1

what did you dyno on yarrowsports dyno...what was your setup at the time?

doctorno

*ding*

k04/rs6north

thought I should update it - figure it was close enough that most would still recognize it

k04/rs6north

<center><img src="http://pictureposter.audiworld.com/47960/s4_93octane_yarrowsport.jpg"></center><p>
setup was k04/16s running awe ko4 mbox flow straightener code

the logs you see are with no tweeks

Mark P later pulled some 7% secondary, but after some logging I found it was running way to lean

Have since put secondary back to 100% and added 2% primary and 2 degrees of timing

Can't get ecux working after installed lemmi - but after making changes and doing stop watch FATS runs (i will get real data) the old settings (93% secondary) was getting a 4.9 second FATS time (this was done with ECUX - it was 95 degrees brutal humidity and .2 seconds for the oversized wheels) - the new settings (+2% primary +2 timing) - was getting 4.5 seconds (i figure 4.3 adjusting for the tire size) - normal weather this should be high 3s

My 2 cents is that a 4th gear FATS time is where the k16s would show the biggest gains versus plain KO4s - my highway driving and one track day on them makes me say this

daves4

That's kinda what I thought. Thanx.