Quote:
Originally Posted by arpad_m
I recently got headers and cam installed, which made NPP louder and a bit raspier after years of slowly losing the edge of the sharp rasp, plus the difference between closed and open states much more marked. Valve rattle I fixed myself based on TSB 18-NA-172 (plus using a bit of Drislide).
Indeed the tips could be bigger, that's for sure, but a muffler shop should be able to easily solve that. I like the sound overall, and high quality competitive products that support NPP (Corsa and Borla basically) are in the range of $2k—after hearing them, they don't feel that much better IMO.
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Thanks for TSB. Do you still hearing rattle at WOT? Or completely gone?