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2003 cooper s

1K views 2 replies 3 participants last post by  heathwebbo 
#1 ·
hi guys just a quickie i have 2003 cooper s jcw tuning kit with standard pipes if i did the one ball mod would i need any re tuning done ?????????
 
#3 ·
I take it you mean you have the standard S exhaust not the JCW system. You wont need a remap for most mods i.e. supercharger pulley, air filter, exhaust, intercooler etc as the ecu adapts well. You will only need a remap if you go for cam, bigger injectors, big valve head etc
 
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