Hello, how to i put my car back to standard as i want to take manual boost control off and have it standard. I installed my new boost gauge today and took it for a spin, only showed 0.5 on the gauge it should be 0.9 shouldn't it. Either back to standard or is it just a case of turning boost up off boost controller? Is it simple to do or get a pro on the job? Also could it be ICV causing it as revs going up an down on occasions? Thanks