Check out my tune and tell me what I did wrong!! I have a 2003 GMC Sierra 5.3, drop in K&N, cats removed, 3" flowmaster with turndown... Someone Please help me modify my tune!!! mabe a little afr and timing advice... also a data log...

 

do you have a vette servo? and have you removed the tourque management?

 

No servo... but yes, I have removed the tq management... I think!! can u look at my tune and tell me if I did it right?

 

Sorry, that was my stock tune... This is my modified tune:

Now u can compare the 2