Have this posted in FI s well but that forum appears more aimed at aftermarket and diy...

E82; N54; COBB stg2 throws a 30ff code

normally yes you check lines and fittings....

here's the thing, in 4th gear it builds 11 pounds of boost with no code, in 5th at 8.5 pounds it throws the code and the 1/2 engine symbol...

what's up?