Quote:
Originally Posted by TX_370
Hrmm... I am wondering if maybe something didnt tighten all the way, around 4K+ there is a little rasp and I dont think its normal.
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I bet you it's jut the HFCs. They introduce rasp. The only way to avoid it is to keep the stock cats, even then there is a slight hint of rasp. It's the nature of the car unfortunately.
18" resonators would help with it, though.