I have heard about this, but don't know what it is. also is there a way to tune your rx7 on the street driving it instead of a dyno. Thanks a lot guys. I live in Wisconsin and there isn't a lot of dynos, and I don't want anyone else to tune the rx7 because I don't think he would know what he is doing.

 

Now I have heard about this just need someone to explain it to me. Thanks.