I have a new pro alloy cooler with twin fans, fitted about 2 months ago, its not a 5 min job but didnt have to cut bumper, went straight in, made a big difference to car, had to turn bleed valve down cos in increased my boost, my car peaks at 16 psi & holds 14psi, on the standard cooler if you kept it on boost it would drop back to about 12 psi but with the pro alloy cooler it will hold 14 psi all day long.