I've seen quite a few posts on here about people having a scraping sound when they're off the throttle, especialy at low speeds...well i found out what caused it on my car, finially!!!
I have a apex'i n1 single, and when i took it off last week i noticed that it had been pressed against my driveshaft and had worn a dent into it. I only heard it when i was off the throttle because the exhaust was too lould. So now i need to bend the brackets to make it hang lower, but at least i figured out what it was before it wore a hole in the exhaust! I hope this helps someone else...
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