There's a Mitsubishi Legume (auto!) just up the road from our house. It used to sound OK, but now it has an even louder, raspier, zorst fitted. The day he got it, he went up and down the road from his house to the corner (100m away?) and back, 5 or 6 times in a row.
It's a prime candidate for the DoseOfExpandingFoamUpTheZorst treatment.
I don't mind sporty zorsts, as long as they sound good, but if they're loudly droney ones on autos, or just obnoxiously loud, then they get right up my nose. Um... - ear.
Even the Satantune on the VifFerraRi gets on my wick after a while if I take the spud out.
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