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I am looking to buy the Cobb tune as well. I run the JB3 right now. Cobb website lists 9-10 weeks backorder... Many people confuse JB3 stage 1 with JB4 since JB4 is hugely popular with the 1/3 series crowds. Stock N55 boost is 7-10 psi. I think the engine targets a HP/TQ number hence the difference in max boost. The JB3 ups the boost by 3 psi. Cobb has ability to up the boost more which is why I want to try Cobb now. Once they have it back in stock, they will have another X5 customer. I just need to figure out why my car is throwing engine malfunction codes again... 2C86 and 2C58. If Cobb has the tune in stock in Texas, I would love to drive down there and get it tuned by them if I was closer.
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