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Old 07-25-2006, 10:38 PM   #1
G.Subramaniam
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Default Which of these caused my emissions failure?

I have CAI
2.25" catback and 2.25" high flow cat
Torque chip
and Delta Street Cams
My car failed NJ emissions

Which of my addons should I remove to pass emissions ?
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Old 07-25-2006, 11:23 PM   #2
yarrgh
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you could always put a normal cat on, that's how i got mine to pass. you can try to put your stock intake back on. it's a tad hard to take out cams.....

how about that chip? is it a piggyback or reflashed ecu?
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Old 07-25-2006, 11:26 PM   #3
OnlyInAJeep24
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STP sells stuff that you can add to your gas tank that runs extremely clean...

It says its to help you pass emissions.. I dont know if it works or what, but its worth a shot, even if you do just put the stock cat on, adding that cant hurt?
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Old 07-26-2006, 12:50 AM   #4
Patrick Olsen
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I'd ditch the torque chip. AFAIK it richens the mixture, which isn't going to do anything good for your emissions (or performance, for that matter).
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Old 07-26-2006, 06:49 AM   #5
LetItSnow
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I find it hard to believe that the intake could be the problem. I'd blame the cat first.
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Old 07-26-2006, 08:17 AM   #6
G.Subramaniam
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It is a 2 year new high flow cat

Where can I get the STP stuff, does this actually work ?
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Old 07-26-2006, 08:41 AM   #7
Patrick Olsen
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There are these places called auto parts stores. They sell automotive supplies there. Look in the gas additives section, you'll find a couple of different brands of additives designed to help you pass emissions.
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Old 07-26-2006, 09:14 AM   #8
Calamity Jesus
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Quote:
Originally Posted by Patrick Olsen
I'd ditch the torque chip. AFAIK it richens the mixture, which isn't going to do anything good for your emissions (or performance, for that matter).
Yes, ditch the chip and then drive hard to the testing facility.. you want that cat to be hot when you pull in.
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Old 07-26-2006, 11:42 AM   #9
NA impreza~J
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run higher octane for the test? Just throwing it out there. Don't know if it helps or not.
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Old 07-26-2006, 11:59 AM   #10
Matt Monson
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Well,
to really figure this out, we need some more details of why you failed. Was it at idle or under load? Do you have a CEL? Was it CO emissions or something else?
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Old 07-26-2006, 05:46 PM   #11
mrpedal
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Quote:
Originally Posted by G.Subramaniam
I have CAI
2.25" catback and 2.25" high flow cat
Torque chip
and Delta Street Cams
My car failed NJ emissions

Which of my addons should I remove to pass emissions ?
can you post your emission results?
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Old 07-26-2006, 05:48 PM   #12
mofugga
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yeah, they didn't tell you why it failed
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Old 07-26-2006, 06:13 PM   #13
Matt Monson
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You know, potentially they could have failed him on the visual part of the inspection. Any of that stuff that they can see can cause a car to fail in many states. I am not well versed on NJ and how strict their standards are.
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Old 07-26-2006, 06:43 PM   #14
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im betting with all those mods you have a CEL? and if yes well than its obvious
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Old 07-26-2006, 06:46 PM   #15
G.Subramaniam
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There is no visual test and no CEL
It failed HC and CO
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Old 07-27-2006, 09:42 AM   #16
Patrick Olsen
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Quote:
Originally Posted by piker28
im betting with all those mods you have a CEL? and if yes well than its obvious
Why would any of those things he's got cause a CEL?

G.Subrmaninijmiumm, how does NJ test, and how did you prepare for the test? As someone already pointed out, you want the cat to be fully up to temperature - was the car all warmed up when you got tested? Does NJ do a rolling test, or just a test at idle? What are the specs, and what did you car actually pump out?

Quote:
Originally Posted by VA emissions testing page
- Hydrocarbons: Measured in parts per million, hydrocarbon is made up of unburned fuel molecules. Excessive amounts can be caused by, but not limited to, problems with the ignition system (plugs, wires, timing, etc.), air/fuel mixture or fuel delivery (carburetor or fuel injection), slow reacting oxygen sensor, diluted engine oil, or a dirty air cleaner.
- Carbon monoxide: Measured in a percentage, carbon monoxide is partially burned fuel molecules. Excessive amounts can be caused by, but not limited to, problems with the air/fuel mixture or fuel delivery (carburetor or fuel injection), slow reacting oxygen sensor, diluted engine oil, or a dirty air cleaner.
- Nitric oxide (dynamometer test ONLY): Measured in parts per million, nitric oxide is a chemical created by high combustion chamber temperatures. This gas is produced when the vehicle is accelerating or traveling uphill. Excessive amounts can be caused by, but not limited to, an inoperative or clogged exhaust gas recirculation system, ignition timing, lean fuel mixture, or an inefficient or inoperable catalytic converter.
Failing HC and CO sounds like a car that's running too rich. Remove the Torque Chip.

Pat
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Old 07-27-2006, 11:01 AM   #17
mrpedal
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Quote:
Originally Posted by Patrick Olsen
Failing HC and CO sounds like a car that's running too rich. Remove the Torque Chip.
Pat
The cams aren't helping, but no way you wanna pull those out. Torque chip add more fuel? I thought most of these NA imprezas already ran rich- adding fuel sounds like you'd be hurting your performance. If it' easy to pull out, great, but if it's a wired in piggyback... I'd rather play with a couple bolts under the car and swap the exhaust.

I'd bet if you put a stock cat and muffler (cork) on, you'd be much closer to passing.
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Old 07-27-2006, 11:42 AM   #18
orndog
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Torque chip... those are the ones that fool your car into thinking the intake air is colder and therefore denser? Remove if so.
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Old 07-27-2006, 11:43 AM   #19
Matt Monson
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I am going to guess that the cams are not to blame. We recently had a car pass with the Delta cams, along with Borla headers, a high flow cat and a stock RS cat back. We ran the stock intake plumbing. This was on an Ej22 powered vehicle. I am going with the Torque Chip as the culprit. It's only 4 wires IIRC, so removing it and reinstalling it later really should only be a 20-30 minute operation once you get under the rug...
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