need a tune?

Hey guys,

I live in San Diego, I'm looking for someone who can do a tune. I don't have a tweecer, would I need to get one, or not. I have some 24lb injectors + TF street heat upr/lwr intake, I wish to install.

I have already Mac Shorties, 3.55's and Mac pullies. I have 150k miles. Problem: My car pings, even w/ 91 octane @ 3/4 throttle. I have changed the act and coolant temp sensors. I even switched out the maf all to no avail. What should I do. Would a custom tune help me ?

Dante'