Since I bought my car, I noticed what I assume to be a noisy diverter valve.
Assumed it was split, so changed to a rev D. Power jumped hugely, but the noise is still apparent.
The noise in question is a fast ticking / whirring noise when revs are dropping. It happens when driving and stationary, and is only audible with the windows down.
I have just fitted a BSR Optiflow induction kit, and the sound is still rather annoying - more apparent today as I was testing the BSR with the windows down.
1. From what I have read, the noise is normal. Anybody else experience this?
2. Would an aftermarket DV sort this out? If so, which one?
I'm not after a loud dump valve or anything like that, the more silent the better.