So this didn't happen before i changed my air filter. Put everything back together, and now have a loud ticking/ rattling noise (which sounds like it's coming from the top end) and my F.I. light is staying on. When i first started her up, the ticking was right away. After she warmed up it only really does now at 7k rpm's and up. Note: I did let it sit a while and it has been getting colder up her in p.a.