I bought this car in March and have got around to logging some to see where its at.

2005 stock everything except a HKS cam, full 3" exhaust, and intercooler all on 19-20 psi. This is a third gear pull on 93 octane on a fairly dry hot day. I'm not super familiar with Evos yet but I'm pretty sure this knock isn't very good, I don't have a wideband on this car yet either but I must say it does pull hard with no issues. Would it be advisable to start mixing a little race gas in until I can get it properly tuned?