These were not rare downpipes, they were sold out of Mountune USA for a long time, then Mountune had a lot of supply issues, Covid happened, CA got stricter as well as the EPA on selling things like that, so it's just not sold anymore from them. It's probably not even as desirable as you think.

That said, if you throw no codes today, as long as you have your car nice and warmed up before testing you should be okay, giving the cats time to warm up and function. You should pass

If you were getting a CEL, you can also trick it if you failed, with a j-pipe adapter. Which is a small threaded tube that takes the factory O2 sensor out of the main exhaust stream and not in direct contact.

As for your other mods, it will vary state by state and their requirements. CA and NY being the tougher states to pass. CA especially with their CARB certified parts.

 

These were not rare downpipes, they were sold out of Mountune USA for a long time, then Mountune had a lot of supply issues, Covid happened, CA got stricter as well as the EPA on selling things like that, so it's just not sold anymore from them. It's probably not even as desirable as you think.

That said, if you throw no codes today, as long as you have your car nice and warmed up before testing you should be okay, giving the cats time to warm up and function. You should pass

If you were getting a CEL, you can also trick it if you failed, with a j-pipe adapter. Which is a small threaded tube that takes the factory O2 sensor out of the main exhaust stream and not in direct contact.

As for your other mods, it will vary state by state and their requirements. CA and NY being the tougher states to pass. CA especially with their CARB certified parts.

Hmm, that explains why you can't find the Mountune downpipes anymore. The downpipe looks pretty stock and I would assume they're not gonna interrogate that if it's fine on the software side. Dunno if that's luck of the draw or what.

 

You can go to AutoZone and have them scan it to see if all of the emissions monitors are ready. If so, you should be able to pass, at least in most places.

California is starting to look for aftermarket intakes and will fail you if yours doesn't have a CARB sticker on it so swapping it out is a smart move.

 

You can go to AutoZone and have them scan it to see if all of the emissions monitors are ready. If so, you should be able to pass, at least in most places.

California is starting to look for aftermarket intakes and will fail you if yours doesn't have a CARB sticker on it so swapping it out is a smart move.

Yeah I plan on swapping back to OEM intake/filter. I have an RS box, which is visually different from stock but I can just put the stock lid on lol. I don't think the hot/cold intercooler pipes are DQ'd by smog if the intercooler is not CARB regulated. I have the hot side hard pipe as well.

 

Supposedly CA checks for tunes now so if you are not able to flash back to a stock tune that may be an issue. I’m not entirely sure how they check though

 

Yes, I've heard the same--hence my concern. It runs fine as is. Odds are I will have to buy an AP and flash it back to stock it unless I come across a mod-friendly shop. Hate CA. Crossing my fingers they don't ask for smog in this year's reg papers.

 

There is a difference, $$$CARB$$$ certification.
A new AP won't come with stock OEM software. You will have to take it to the dealer$$hip to get the stock software.

 

I might have the Ford dealership flash it stock when they do the recall(s) I'm due for lol

 

Welp, my car is registered at my parent's IL farm where there is no emissions, so the only advice i can give is move somewhere that being a car enthusiast isn't a crime, lol

 

Quit stressing and get a free OBD emission monitors check at AutoZone or other car parts place.

 

My concern is more about the CVN. Maybe it already has a CARB-legal tune. Maybe it doesn't have a tune at all. Don't really know lol. I'll hit up auto zone, though. Appreciate it.

 

Some things will not be noticed by a visual (such as an DP or an intake), whether deliberate or simply overlooked. The tech will plug in to your OBD port and the system will read any non approved tune and flag/fail you. If the tune is not CARB approved you need to flash back to stock and drive the vehicle enough for all the sensors to be online.

 

I'm debating getting a CARB-approved Cobb tune/"power pack" because I need to get an AP anyways. It would give me parts with CARB stickers as well, which would be nice. Obv I won't use the COBB OTS tune for any longer than it takes to get a pro-tune from JST, Stratified, or whoever.

 

DO not plug in ur tuned car into SMOG system, it will black list it.

Flash back to stock, do the drive cycle and get the monitors ready.
then you are good, as far as visual goes a lil $$ goes a long way.

 

DO not plug in ur tuned car into SMOG system, it will black list it.

Flash back to stock, do the drive cycle and get the monitors ready.
then you are good, as far as visual goes a lil $$ goes a long way.

Interesting; last I heard it was just considered a fail no different from a visual or CEL fail. Are you suggesting you'll be required to go to the state ref if it fails the CVN/tune test? If so that's crazy, but not surprising. I'm only concerned about the unknown "tune". Everything else can be changed easily or just won't be seen.