I have had the rb30det's engine in and out a few times now, and the last time i had issues with the car the oil pump shit itself, but lucky i found it just in time.
Anyway a N1 pump goes in and i noticed this time i was able to get the cam timing spot on, we have never been able to get the timing on 100% correct, it was allways a little bit off.... so i retarded the exaust 4deg for good measure.
I do not understand what has happened to my car, it sounds soooo loud and sooo much tuffer then it used to, and its not cos i have not driven it for a month, i have had about 10 comments from friends "what have you done to your car? it sounds off its head and sooo loud now" (and i did not even bring it onto boost)
It is very very loud, its actually too loud and i am thinking of doing something to shut it up. (yes i am getting old)
I have done nothing but install a new oil pump and change the cam timing. how can this be???