Valvetronic internal fault and servomotor power limited
Hi I have a 2003 318i se saloon it started to loose power a few weeks ago now when you rev it up it makes a noise through the inlet manifold like its a dump valve it still drives but with very reduced power i had a new exhaust fitted yesterday with a new cat as i was told the cat had collapsed been told it could be the timing chain other than that i have not got any idea can any one help please.
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