It seems like some people have no problem with the ripp and a few do. I think it is maybe the lift,weight, tires,gears combination that is a problem. The Jeep Canbus system is a total booger and the trans computer is diabolical. I am not sure what the answer is other than I was some sort of boost on my jeep. And right now I am just not sure who I want. The Ripp has the best track record overall in the industry and they use the Vortec head unit which is pretty solid. The Maggie and Edelbrock use the TVS1320 blower from Eaton which is a good unit. I would love to see the boost curves from all these units laid into one graph.