2006 Chevrolet Cobalt SS Q&A

2006 Chevrolet Cobalt SS Question: Knocking in the engine at 5000rpm

My car is knocking when I get it up to 5000rpm. I am wondering why and if any one else is having this problem. It does have a stage 1 upgrade and only 19300 miles. -
Answer 1
Hi, Were you able to find out any info about this? Is it related to the upgrade? -