I logged some initial runs yesterday with the blower. I was getting some knock but the car is not really ready to test yet. It's a base tune (which turned out pretty good) but the MAP sensor was not hooked up to the PCM and I broke the water pump coolant sensor for the PCM so I had an SES light. I got some knock retard under load. Could an exhaust leak cause that knock???

When the car knocked it was doing it unexpectedly... It would knock if I accelerate and give it some load only took my foot off the gas but then it would start going down. The other time it knocked was I first hit at which point it jumped up but then started going down as my RPM/TPS increased...

I know I don't have the MAP sensor hooked up right which is very important for ignition/fuel but any ideas? I will log more runs when I fix the SES light but I just want to have an idea of what I'm looking at.