i have ravan racing 13-4 kit with new spark plugs and mrt off road h- pipe. its a lund tune. spot on i have no problems what so ever. And if you ever do have a problem van's customer service is top notch.
Thanks guys. To the OP, Lund Racing has been my sole provider of tunes for my customers from the very beginning. Please feel free to give me a call and we can discuss your needs and tuning options.