I just installed the edge evolution programmer on my 5.7l on the level one economy setting, and when i floor it from a red light right before it shifts into second it makes kind of like a screeching sound, i am currently running 89 octane, if i ran 93 would it solve the problem, if so would it do any damage to my engine?

 

same thing with mine i adjusted the shift points and it took care of it it sounds like a belt slip but i didnt let it go long enough to find out what is was