Hi my S2 RS turbo has been set up by power engineering to 180bhp at 18psi I have since turned it back down to 10psi as I want more reliability and less strain on clutch,gearbox ect, does this mean I have to get the car set up again to run 10psi or is it ok as it's below 18psi therefore will not run lean ect, it seems to run fine at 10psi so just needed some more expert advice, cheers