Sounds like a rattlesnake under the hood in my 03 Sentra Spec-V.
Muffler shop says i need new cats.
(for both cats an labor)
Don't need cats in CO, apparently. Thinking about installing my own headers. To save money on labor. Should i spring for the shop's experts? Im no mechanic, but I've got some skill.
I would really appreciate install instructions/tips/advice.
Car is stock except for a Nismo CAI.
poor college kid,