Spawne32

iTrader: (3)

holy god, you failed with that level of HC? We are allowed up to 220ppm on both the idle and high idle test here in jersey, i failed with a 257hc and passed the high idle with like 138ppm lol cali ****in blows

vtaker

Here's my test. I passed by the way. LoL check out the o2 levels = exhaust leak hehe

The MAX numbers seem to vary a lot year to year, car to car. I don't get it.

Spawne32

iTrader: (3)

i think a lawnmower puts out more then 63 hydrocarbons in ppm, you guys are gettin ****ed over in cali hard

vtaker

in cali we get f'd for everything. sadly, it's nothing new.

EnjoyTheRideDC2

iTrader: (1)

Where was your exhaust leak?

vtaker

^in the resonator

That's why I told the OP to get a crap exhaust and drill holes in it. The avg SMOG tech won't notice a thing. I had 10 or so holes in my exhaust and the car didn't sound bad. This method dilutes the exhaust quite a bit and won't harm your engine like running ethanol.

rhymeshark916

Stock with no air box, I need my tags...... !!!!!

rhymeshark916

I'm not punching holes in my ITR b-pipe.

vtaker

So did you end up advancing the timing?

EnjoyTheRideDC2

iTrader: (1)

From what I understood, an exhaust leak after the cat will not affect emissions readings. But in theory, a leak after the cat would allow o2 into the leak area which would mess with the readings at the tail pipe. If the o2 readings are too high though, a tech may decide to fail you if he's that type of guy.

LordAphotic

check the o2 sensor make sure its working the way its supposed to. If u have an obd2 reader with live data it should be easy to see if ur o2 sensor is working and HC is unburned fuel so u need to check the things that burn fuel like ignition system but u said u changed that already so i would say o2 sensor is a good start.

rhymeshark916

I'm going to advance timing to 17 or 18, change out the DC header for the stock one and see what it do. If it fails, I'm getting a new o2 sensor.

lek9l

i was in this situation before with my car, i replace the cat, distributor, wires, plugs, oil, oil filter, o2. I even used wideband o2 and I bring the numbers down, but the HC was a problem still. I still failed even replacing the whole motor to stock spec with no smog coming out, no burning oil. I found out later that my carb legal air mass header was making me fail because it didnt warm the cat up enough on the exhaust system. So i had to source out an oem header with a cat together on one piece for my d15. Too bad honda didnt make a b16 or b18 with a cat on the header, you wil have to make a custom header to make it pass in California. I still failed with my stock d15 but my numbers were close to passing, ended up moving my car into a barn in the outskirts of california, passed the idle test and was done with smog ever since.

el crapitan

also would like to add, advancing timing won't lower hc's. you want to retard timing. you want ignition occurring later in the stroke to give it a fuller burn, since the compression allows the air/fuel mixture to mix more thoroughly if a later spark is introduced

Dc4iNtEgRa

Also, run 87 octane it burns quicker. Run the tank dry, and put a few gallons in before you go to smog it. Just don't rag on the car, as it won't like the fuel. (will help for smog though)

gotkimchi

bump for good info.

lek9l

no problem, smog is stilly, if you ask me, as long as that brown stuff ant coming out of my exhaust and you cant smell it, i dont see how its hurting the environment, especially your going off a smog machine that you don't know is calibrated properly or is reading everything to spec.