cos i do a lot of review and said the JB4 work with N54 can get 40-60HP more. and not too much ppl saying there has a problem after installed. So i am very interesting on it?
otherwise what do you recommend?
i know i can get it online. but i just wanna find a local dealers which can help me install as well.
as they need to do some configation which i worry i will damage the enginne if am config somthing wrong.!!