Hi, I hear so many people doing this, and I have been running rich lately and i have 30lb injectors and my pcm is not programmed to run like that so i guess i need to get it programmed. How does it work? I dont follow how it works, do i ship them my PCM or do they ship me a new one or...........what?

Thanks

 

There are a two different choices. Either you mail your PCM or you can do an exchange by paying a deposit (core charge).