I have no CEL lights, I get the same 26.5 MPG and I drive very sporty to and from work, and it idles like it did stock. I don't have a singhle complaint about the tune. Is it worth the tune? In person I think it is. When I say that I mean you sit down with a sales rep before you even talk to the tuner(Lenny) and you go over some options and are offered water/refreshments. The place is really classy and there's a pretty milf at the front counter that greets you on your way into the facility. Odds are you will get a tour of the place and see their good they produce and their facility really is an awesome place. It was quite an experience and worth the price in the end. When my car was being worked on the sales rep drove me over to a nearby starbucks as I waited for my car to get done. It took about 3 1/2 hours from start to finish.

Is it worth sending your computer in the mail? Meh without all the treatment and lack of a milf offering you water with a smile I think the mail exchange should be slightly cheaper.

 

Well it's January 2017 and it seems the NGK renntech branded plugs are starting to finally give out. I still don't have any CELS all these years later and still average 25 to 26 MPG with this tune. I'm waiting to hear back from renntech on what their advice is for replacements but oddly enough I don't think they even sell this tune anymore.