Denali0229
Full Access Member
Does anyone have any experience with both companies? If so, how do they compare? MJ seems legit. BB is probably the most popular tune in all of the forums. MJ also has the Autocal device and is about $60 cheaper. I've read their articles and posts and feel confident they will tune my truck correctly. It just seems odd to me that if MJ can provide the same service that BB does, and is $60 cheaper, why more people don't use them or why don't I read more from their customers?