Hey guys,
Recently got a three inch exhaust system put on my 2000 GU II ZD30Di and when the engine revs get between 1300-2100 rpm i get a very faint very light whining noise. No difference in power of fuel economy. Any ideas
i thought that maybe the bigger exhaust was causing some weird noises thats all but when i hear it it freaks me out and i panic..

Cheers