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I had the same slight, rhythmic scraping noise when I made left turns. I also had the Raceconcepts dimpled/slotted rotors and the Akebono Pro-ACT ceramic pads.
I took off the wheels and checked to see if the brake shield was bent, but it looked good. I could not see any place it was touching. My calipers were fine and the parking brake shoes were not rubbing. Car braking was fine and except for that slight annoying sound when turning, I had no complaints
So I took the car to my favorite SVX Master Tech at my dealer. If anyone could find it, he could. He took it for a test drive, came back to the shop and knew what the problem was.
It was a shield problem, but it was not bent. He showed me that the brake shields were not one piece of metal, but were made up of multiple plys. Age, moisture, etc. cause these to either swell, separate or warp. He also found a slightly raised are on the back of the Raceconcepts rotors, at the inner edge of the disk itself. He showed me the burnished marks on the back of the rotor AND the small area where the warped dust shield was rubbing. This raised edge contacted the warped brake shield at one point, about 1.5" in length, producing that sound.
He used a ball peen hammer and reformed the dust shield to give it the clearance from the rotor it originally had. He also ground down the raised lip on the inner edge of the back of the rotor. Reassembled everything. Noise completely gone!
If you pull off the back rotors, you should see the rub marks on the shield and/or the rotor. This is a fairly easy fix.
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Subaru Ambassador
1996 Polo Green LSi #216 ..138,100 miles. ..SOLD
JFICX8659TH100216.....Date of Manufacture: November 16, 1995.....
Fuji Heavy Industries..Ōta North Plant....Ōta City,. Gunma Prefecture, Japan
In-Service Date: January 2, 1997
"The Pristine Green Polo Machine”
First Polo Green on the Network
First Clear front turn signals, JDM Alcyone hood emblem, rear panel, and BOXER engine cover on the Network (US) (2000)
First 5000K HID factory fog lights (2007)
First SVX JDM BBS wheels on a USDM SVX (2013)
HID lighting (5000K) for headlight and H3 fog lights, PIAA SuperExtreme 120W high beams, rebuilt EG33 longblock, Cometic head gaskets, Phase II flexplate, AMR aluminum radiator with custom silicone hoses, 160A high-output alternator in aluminum-ceramic coated case, new design alternator wiring upgrade v.4, rare factory headlight protectors, refinished JDM BBS mesh aluminum wheels and custom, polished billet aluminum new hex center caps, LED grille mod, R1 Concepts high-carbon cryo slotted rotors, Akebono ceramic pads, Goodridge S/S braided brake lines, Smallcar Stage 1 shift kit, ThermalTech aluminum/ceramic-coated valve covers, Energy Suspension urethane front & rear swaybar bushings, Bontrager22 rear swaybar with QS Components Chromoly Teflon/Kevlar endlinks, "$15.00/5 minute" suspension mod. Hella Supertone horns, Custom stainless steel exhaust system with 2" headpipes, Magnaflow cats, AeroTurbine AR25 resonator /AWD "Bullet" muffler.
R.I.P. 2010 Subaru Outback Limited 2.5 CVT...338,000 miles. Totaled by a 1,300 lb. COW March 4, 2016 
2014 Hyundai Avante Limited ...178,000 miles. Actually quieter and smoother than the Outback 
2007 Mazda Miata MX-5 PRHT...102,000 miles.
Plenty of parts, service and windshields. 
4th Registered Network member —2/21/2001
My NEW locker..I...My Email..I..Wikipedia/SVX .
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