when i shift into third there is like a knock, that sounds like detonation it is only in third is this normal or is the timing to far advanced. could extreme heat be a part of it since it gets to 117 in the day. its when i put a full throttle from 2nd to third. any advice greatly appreciated. it has been pro tuned as well. 07 wrx wagon stage 1 dynocomp. plus it has a burning smell when you open it up. any feedback help thank you