Emission help

[AZTY]

I am blowing a 267 and its supposed to be under 210 for hydro carbons. I passed everything else. I ran it through with the ultimate chip set at T115 and the fuel pressure at about 36psi. My cat is only 6 months old and I turned off the alky. I want you guys to tell me that there is no difference between the ultimate setting at T115 with a 3 bar map sensor and the stock chip with a 2 bar map sensor for emissions purposes. I adjusted the fuel back to arround stock and I figured that other people have ran into the same problem I am having and could mabe help me with a solution. Thanks guys

 

[BigBadSmoosh]

in order to pass the same test in NJ, I filled up my tank with super..

drove around till it was 1/2 empty.. poured in two bottles of gas line anti-freeze (alcohol) and turned my fuel pressure down to about 28lbs.

I passed with flying colors, it was also a cold day.

do believe the hotter your engine is the more hydrocarbons it will burn off.

 

[PPI Typhoon]

Re: Emission help

I am blowing a 267 and its supposed to be under 210 for hydro carbons. I passed everything else. I ran it through with the ultimate chip set at T115 and the fuel pressure at about 36psi. My cat is only 6 months old and I turned off the alky. I want you guys to tell me that there is no difference between the ultimate setting at T115 with a 3 bar map sensor and the stock chip with a 2 bar map sensor for emissions purposes. I adjusted the fuel back to arround stock and I figured that other people have ran into the same problem I am having and could mabe help me with a solution. Thanks guys

If you think it has something to do with the Ultimate, you can always run it back to 2 bar and stock pretty quickly. If you need the MAP sensor, I have mine still. Also, you can try running the hotter thermostat to get your temps up a little.

 

[AZTY]

OK, here is what I think I am going to try. Put my stock chip back, put in the 2 bar, set my FP to 40, take out my 160 thermostat and replace it with a 195, and put some alchol in my gas tank. Does that sound good or should I try something else?

 

[BigBadSmoosh]

OK, here is what I think I am going to try. Put my stock chip back, put in the 2 bar, set my FP to 40, take out my 160 thermostat and replace it with a 195, and put some alchol in my gas tank. Does that sound good or should I try something else?

sounds good but thats stock level fuel pressure, Im not sure how they actually test your emissions there.. in nj they put it in park and rev it to 2500 rpms for 2 min..

id turn my fuel pressure way down.. not like they are going to get into boost..

 

[AZTY]

OK, I'll turn it down to like 32 lbs, but I aint going in lower than that. They test ours in park and rev to 2200-2500 rpms for 30 secs.

 

[BigBadSmoosh]

OK, I'll turn it down to like 32 lbs, but I aint going in lower than that. They test ours in park and rev to 2200-2500 rpms for 30 secs.

that should do it, the alcohol should thin it out a bit.. but they might be able to tell its in there..

my truck blew some white smoke.. the guy asked why, I said it was cold.. he knew what it was and barely inspected the truck.. all he did was put it on the sniffer for the test.. and passed me..

but technically I did pass emissions..

 

[AZTY]

OK, so nothing good so far. I have gone through emissions like ten times now and still can't pass. I have tried combonations of: no intake filter, no breather on the valve cover, 91 octane with some denatured alchol, 3 bar chip, 2 bar chip, ultimate chip, stock chip, 160 degree thermostat, 195 degree thermostat, 30-50 lbs of fuel pressure. The closest I can get is passing everything but hydrocarbons that should be at 220 and mine is spitting out 448 at idle. Spark plugs, wires, cap, rotor, cat converter, muffler are all new. Cruise control works great so I know that my vacuum guys are all good. Any more ideas, someone must know something else I can do besides selling it or burning it. I am really running out of other options. Please help.

 

[SY2932]

What is the status of the EGR system on your truck? If too much exhaust is entering the combustion chambers, it won't burn as hot causing your emissions to spike. HTH's

 

[kentuc]

I ran through with the ultimate chip ,3 bar ,180 stat .Passed easily.
I would say check for a vacuum leak that is causing the mixture to go rich.
this unmetered air is probally the cause.Try spraying light oil around the intake manifold and be sure your PCV vale{s} are okay..good luck.
I tested @ 40th street /greenway.
The tech thought I swapped the engine ,because it says syclone on it!

 

[ThaJokr]

Hey Robbie where do you get tested? I took my old Ty to the one in North Scottsdale and it passed with flying colors.

 

[AZTY]

I feel like redoing the whole vacuum system again, cause its like trying to find a needle in a hay stack. I've been through three different stations trying to pass. I went to the north scottsdale one, I actually got it to pass hydrocarbons and carbon monoxide the third time and then they said I couldn't have the breather on the valve cover, I almost killed the manager. Needless to say I am not welcome back there anymore. Now I am taking it over the the one on Washington on 48th street where they don't care about the breather, but it just won't pass hydrocarbons. I'm taking it to a third mechanic shop tomorrow that says they will be able to get it to pass, so we'll see. My next idea is the throw some 87 octane through with some alky and see if that will pass. Now how many pcv valve am I supposed to have? Just one right? Robbie

 

[SY2932]

Two PCV's the easy one is on the drivers side and the hard one is on the passenger side under the intercooler. HTH's

 

[PPI Typhoon]

I feel like redoing the whole vacuum system again, cause its like trying to find a needle in a hay stack. I've been through three different stations trying to pass. I went to the north scottsdale one, I actually got it to pass hydrocarbons and carbon monoxide the third time and then they said I couldn't have the breather on the valve cover, I almost killed the manager. Needless to say I am not welcome back there anymore. Now I am taking it over the the one on Washington on 48th street where they don't care about the breather, but it just won't pass hydrocarbons. I'm taking it to a third mechanic shop tomorrow that says they will be able to get it to pass, so we'll see. My next idea is the throw some 87 octane through with some alky and see if that will pass. Now how many pcv valve am I supposed to have? Just one right? Robbie

It can't hurt doing the vacuum system. I redid all of mine rather than trying to figure out what was bad, what was good. It's a good thing to do anyhow, especially down here with the heat.

 

[TYRODD]

Two PCV's the easy one is on the drivers side and the hard one is on the passenger side under the intercooler. HTH's

Actually,both valves are on the passengers side under the upper IC,one for boost,the other for vac. The drivers side crankcase vent is just an open line (vac) to the air filter box.

 

[AZTY]

The outcome:

So I take it to this place called Emissions Express to get them to adjust it to pass. I drop it off at 8am and they tell me they will call me when its ready. Like 8:30am they call me and tell me its ready to go through emissions. So I go pick it up and it passes and I'm kinda like wtf. So I take it back so they can adjust it back. I tell them that I am really curious what they did to get it to pass and the guy starts laughing at me. He take me out to my ty, I start to pop the hood and he tells me there is no need to do that cause he never opened it, again I was like wtf. He opens the passenger door and reconnects the brown wire that goes from my computer to my timing, then I figure it out. I just paid these guys $100 bucks to disconnect one stinkin wire. O well, at least I can have the ty back on the road again.

 

[Syclone#1992]

The outcome:

So I take it to this place called Emissions Express to get them to adjust it to pass. I drop it off at 8am and they tell me they will call me when its ready. Like 8:30am they call me and tell me its ready to go through emissions. So I go pick it up and it passes and I'm kinda like wtf. So I take it back so they can adjust it back. I tell them that I am really curious what they did to get it to pass and the guy starts laughing at me. He take me out to my ty, I start to pop the hood and he tells me there is no need to do that cause he never opened it, again I was like wtf. He opens the passenger door and reconnects the brown wire that goes from my computer to my timing, then I figure it out. I just paid these guys $100 bucks to disconnect one stinkin wire. O well, at least I can have the ty back on the road again.

Did he say exaclty why he disconnected it and how that makes it pass?

 

[AZTY]

Yeah, all he did was disconnect that brown wire so that the computer wouldn't adjust the timing back and cause more hydrocarbons. I guess its an old gm trick. So when my ty went through emissions, the computer wasn't compensating for the timing. Pretty crazy

 

[BigBadSmoosh]

ummmm, isn't that the brown wire that is used to adjust your timing..

heh, he set the timing at what 0 degrees.. no advance, no retard..

eh, as long as he didn't stomp on the gas when driving to the inspection station.. i guess everything will be fine.

 

[AZTY]

ummmm, isn't that the brown wire that is used to adjust your timing..

heh, he set the timing at what 0 degrees.. no advance, no retard..

eh, as long as he didn't stomp on the gas when driving to the inspection station.. i guess everything will be fine.

Thats exactly what happened. And they plugged it back in after I passed, now everything is groovy