Anyone ever had a problem with them? I bought them last year had it on for a week and due to it causing the car to stall, I took them off for a few month. Put them on again just recently and it wouldn't whistle at all, had the mechanic took it apart and gone over everything, it took him a while and eventually he got it working again. That was 2 weeks ago, and today, it's gone silent yet again.
Has anyone ever had this problem or am I the only one?