I'm in the middle of my 5.3 swap, and wanted to make sure my injectors wouldn't give any issues. I took them to a local guy that flow tests them, sonic cleans them and replaces the filters and orings. I'm glad I did, because one of them was plugged up solid. Besides that, the first flow test showed they varied up to 10cc's. After he cleaned them and changed the filters they were all within 0.5cc's. If anybody else needs theirs done you can email him at
knewrc2@yahoo.com. He only charges $100 per set. Tell him Clint sent you.