I just wanted to say thanks. I know this is an old post but I recently picked up my 08 Si from an Acura dealership and had the same exact issue. I showed them the tsb and they fixed it right away.Don't know if this was posted yet, but there has been a lot of steering pop threads.
Service Bulletin 09-028 Dated July 16, 2009
Clunking, Popping, or Clicking Noise From the Front While Turning
There is a clunk, pop, or click coming from the front of the vehilce when making a left or right turn at slow speeds.
The steering gearbox mounting bolts are not torqued correctly.
From VIN 2HGFA1...8H516998 thru
From VIN 2HGFG1...8H546508 thru
From VIN 2HGFA5...8H705832 thru
From VIN 2HGFG2...8H704505 thru
From VIN 2HGFA1...9H500000 thru
From VIN 2HGFG1...9H500000 thru
From VIN 2HGFA5...9H700000 thru
From VIN 2HGFG2...9H700000 thru
Retorque the steering gearbox mounting bolts.