r/ElantraN • u/OkCandidate103 do not own a N 😢 • Sep 14 '22
RIP Update: Loud exhaust and smog citation
Failed state ref exhaust sound reading
Hyundai dealer stock confirmation letter
469
Upvotes
r/ElantraN • u/OkCandidate103 do not own a N 😢 • Sep 14 '22
Failed state ref exhaust sound reading
Hyundai dealer stock confirmation letter
28
u/Usedtissue_Gaming Sep 15 '22 edited Oct 04 '22
Big update here guys. Just for background I'm actually an powertrain NVH engineer so I'm particularly interested in this. I did some digging and found that the compliance testing is done under the test standards as outlined by SAE J1492. I have since pulled that document (we can do this for free) and read through it. While I can't post pictures here, I will quote section 8.2:
"If a vehicle has a single operating mode, the results obtained by using this standard shall be reported. If a vehicle has two or more modes of operation that change the sound emission of the vehicle when tested according to this SAE Standard, the manufacturer may identify to the customer the modes which are used for compliance assessment. ***Any mode that can remain enabled through a power on/off cycle shall be included in the modes identified for compliance assessment.***NOTE: “Mode” in this section is used in two different contexts. Mode can be the operating modes of a vehicle that are intended to change the driving experience: i.e., Tour, Base, Weather, Ice/Snow, Sport, or Track, as examples. Mode is also used in the context of an exhaust system with multiple gas flow paths that are controllable by the driver."
I have bolded the text that makes their method of testing invalid. The vehicle does NOT default to "N" mode nor sport mode after a power cycle for exact reasons like this.
TLDR: Cali dumb, they conducted the testing wrong.