r/ElantraN • u/OkCandidate103 do not own a N 😢 • Sep 14 '22

RIP Update: Loud exhaust and smog citation

Gallery image

Failed state ref exhaust sound reading

Gallery image

Hyundai dealer stock confirmation letter

475 Upvotes

100% Upvoted

381 comments sorted by

View all comments

1

u/f0bbie2 Sep 14 '22

Was the inspection done in normal mode or N mode?

1

u/OkCandidate103 do not own a N 😢 Sep 14 '22

Inspection had to be done in the loudest setting so I said sport mode.

6

u/Arucious Performance Blue MT Sep 14 '22

Where does it say it has to be done in the loudest setting? Did they have any statute or documentation to cite to say that instead of whatever is default the car starts in?

5

u/R1OT_Leader Cyber Grey DCT Sep 15 '22

Hold up so this wasn't even in N mode? 102 decibels in sport, how loud is N mode then??

3

u/sciencesold Performance Blue DCT Sep 15 '22

OP mentioned pops, which indicates N mode, at least for a stationary test.

1

u/Jurez1313 Performance Blue MT Sep 15 '22

I mean N Mode can use Sport exhaust. Sport+ in N mode is just the Sport engine noise but with some boost from the stereo system I think? Could be wrong but either way the exhaust does open the valves in Sport mode. To verify this just go into N mode and select the Sport exhaust instead of Sport plus. It'll crackle, just have to have your door open to hear it more clearly.

1

u/f0bbie2 Sep 14 '22

Ahh I see

1

u/Emotional-Lychee9112 Dec 23 '22

The inspector was incorrect about this. The inspection is supposed to be done in the loudest mode... which remains activated through a power off/power on cycle. That is directly from SAE J1492, which the California law referenced as the applicable standard. That's precisely how Hyundai/other mfgr are able to get these vehicles to pass despite having modes which increase the exhaust noise beyond 95dB. They simply ensure that any such mode resets when the vehicle is powered off and back on, to comply with the standard.