passing NJ inspection

[spina74]

I went to a private inspection station today and I failed for emissions and I don't know what else to do. My cars a 94 Trans Am GT, with a .570/.550 cam, 30lb SVO injectors, ported heads and intake,1.6rr, 52 mm BBK TB, LT's, magnaflow cat, magnaflow muffler, and a custom tune from PCMforLess. I'm not sure what else I can do to try and pass. I have heard of something you pour into your tank that greatly reduces your emissions but I'm not sure what it is.

[MonmouthCtyAntz]

Should have thought about that before getting the non emmision compliant cam...not sure, I know they can be had on the black market but dont know where.

[Tru2Chevy]

How far off are they? If they are close you may be able to fudge a few things and get through, but if not, you may be stuck having to make drastic changes.

- Justin

[spina74]

The cam came with the car, I'd really hate to get rid of it, its make the car sound amazing, the motor has great power, and believe it or not my gas mileage isn't really that bad if I don't constantly hammer the pedal.

[wretched73]

mess with the timing?

[LTb1ow]

Whats the LSA on the cam? And where is the cat located? For LTs you really want two cats, one per header, and each in the Y pipe.

[BonzoHansen]

What did you fail for - what are the numbers? Something as simple as a bad EGR can fail you.

[LTb1ow]

Or having LTs in NJ....

[MonmouthCtyAntz]

Or having LTs in NJ....

Naa everyone and there mother has LTs in NJ, problem is when they throw codes :(

[LTb1ow]

Really? I think that may work with after 95 but OBD1 is hard to pass with em.

[sweetbmxrider]

do it legal or don't do it at all. post up the numbers.

its funny how many people bitch about emissions on here and stone you for any other mistake. i have a cat and i pass emissions and i am damn proud

[LTb1ow]

Yea but your stock internals, I could run as many cats as I could, and still wouldn't pass.

[sweetbmxrider]

im sure its possible. swapping for a mild cam and having the appropriate tune. all emissions related equipment hooked up and working properly. its just annoying how many people **** bricks about passing or where to go when most all chose to do these things to their cars. whatever over it

[pound]

post up the numbers. i'd be interested to see how you did especially with a cam like that and 1.6 rockers. my inspection is due in march and i just completed a motor swap with a fairly mild cam 208/221 .474/.510. maybe i should hang on to my stock cam just in case.

[WhiteKnight]

Just find a shady shop to pass it, why change a cam twice? Sound and performance over the enviornment.

[The Fixer]

post up the numbers. i'd be interested to see how you did especially with a cam like that and 1.6 rockers. my inspection is due in march and i just completed a motor swap with a fairly mild cam 208/221 .474/.510. maybe i should hang on to my stock cam just in case.


Sounds like the ZZ4 cam. Back in the late '90s, GM got the ZZ4 emissions-certified as a legal crate motor swap with no EGR, and a stock CCC carb in California. You should have NO problem passing inspection with that cam as long as you have a functional cat and a good tune. What are you using up top, carb or fuel injection?

[pound]

Sounds like the ZZ4 cam. Back in the late '90s, GM got the ZZ4 emissions-certified as a legal crate motor swap with no EGR, and a stock CCC carb in California. You should have NO problem passing inspection with that cam as long as you have a functional cat and a good tune. What are you using up top, carb or fuel injection?

yep its a zz4 cam. i do have a cat, and am using tbi to feed the motor. the tune is not all the way there yet, but i'm hoping to dial it in with the wide band. still got some time before i am due so i'll work on it until then. oh, does anyone know what the driving conditions of the test are? do they just take measurements at idle or do they put it on the dyno? that info would be a big help because then i could work on those specific rpm/map cells.

[sweetbmxrider]

you will be on the dyno. test is at 15mph. your idle needs to be between like 400 and 1250 i think.

[spina74]

I wasn't give any numbers from the place, my cat is located on my I pipe mieneke chose that spot, the cam has a 110 LSA, the EGR is gone I bought the car that way and I'm still running the LT1 FI setup....I'm not sure how I failed because I had a camaro that was worked up that was originally TBI that i switced over to carb and had 1 cat on.

[LTb1ow]

110 LSA is not gonna pass.

[Knipps]

WTF is a Trans Am GT. When I first read this thread I thought it said Grand Am GT. :scratch:

[spina74]

It was only made in 94' I believe. It's just a trans am but the GT's came with the high rise wing.

[NJSPEEDER]

I wasn't give any numbers from the place, my cat is located on my I pipe mieneke chose that spot, the cam has a 110 LSA, the EGR is gone I bought the car that way and I'm still running the LT1 FI setup....I'm not sure how I failed because I had a camaro that was worked up that was originally TBI that i switced over to carb and had 1 cat on.

The standards are by model year, any car that was a TBI model year would have a pretty low, Pre OBD, standard compared to your '94.

Without an EGR, it will be tougher to pass. See if you can grab a junk yard set up and throw that back on or rig something up. you may also have to mess with the tune to get it through. The inspection station should have given you a print out of the emissions readings to take back to your personal mechanic to help him diagnose and remedy the issue. If they did not give you the print out, head back over and get it from them, it shoudl be saved in their inspection computer.

-Tim

[spina74]

I got my inspection print out my NOx standard was 829 and i got a 118, the HC standard is 112 i got a 815, and the CO standard is 0.62 and i got a 5.52

[sweetbmxrider]

haha wow... you need to hook up your emissions equipment and hope. i doubt you will come close though even with tuning it.

[TurboDiverArt]

I haven't heard of anything that you pour into your tank. Sounds like snake oil to me.

[sweetbmxrider]

there is stuff out there like "guaranteed to pass" you have to run it through a full tank of super and yada yada. i don't really see it helping him any.

[91chevywt]

You are running rich, or timing is too retarded. high HC, high CO, low NOx = running rich or timing too retarded. EGR wouldn't help you, its main purpose is to reduce NOx. I'd bet if you could bump up timing or lean it out you would see a drastic change.

Hydro Carbons = unburned fuel

[sweetbmxrider]

probably from the cam

[WildBillyT]

there is stuff out there like "guaranteed to pass" you have to run it through a full tank of super and yada yada. i don't really see it helping him any.

I am not sure if GTP is safe with O2 sensors.

When the car was taken to inspection, was it properly warmed up? If the cat is not in the stock location and you don't have the stock emissions equipment it may not be getting hot enough to work properly.

[sweetbmxrider]

got me :shrug: i'd read the bottle first.

[tcbnj]

My junk is a 95 Formula 6 speed inspected on Nov 1 and it passed; it has ~ 55,000 miles. Prior to inspection I used the "Guaranteed to Pass" solution as well as changed the oil. I probably idled 30 minutes waiting to get through the inspection line in Wayne.

Significant Mods are limited Kooks LT and cats, 1.6 crane rockers, K&N Filtercharger and a TTP tune using LT1 Edit

Reading from the inspection report:

NOx standard = 879, reading = 650

HC standard = 117, reading = 54

CO standard = .65, reading = .05

Two years ago prior to engine mods the inspection report reading:

NOx standard = 879, reading = 289

HC standard = 117, reading = 10

CO standard = .65, reading = zero

I think the reason the readings got worse was due to cooler cats. The headers push the cats further from the engine, there are now 2 cats vs. 1 and there is more overall tubing than stock which I assume is decreasing the cat's operating temps.

Your emission problem may also be due to running a cooler thermostat.

Hope this helps

[z28rob18]

"do it legal or don't do it at all."
thats quite stupid everyone knows that in nj u cant build a car to lay down some BA numbers and drive home and do it legally. i dont see how im ever gonna pass. im buildin a stroker and the cam will be alot bigger then the one he just failed wit plannin on a 234/242 .612/.612 lift guess ill figure it all out wen the time comes.

[sweetbmxrider]

thats what drag strips are for. good luck

[LTb1ow]

And strokers eat up a bit more cam than stock, so you may be able to tame it enough to pass. Run mids for inspection, get a GOOD cat, random tech comes to mind.Or the heavy metal series. Get a good tune, make sure its all warm and toasty before inspection and don't give em a reason to blatantly fail you.

[NJSPEEDER]

"do it legal or don't do it at all."
thats quite stupid everyone knows that in nj u cant build a car to lay down some BA numbers and drive home and do it legally. .

Really? I seem to see a lot of cars that are inspected, insured, and carry full street equipment at the track belting out serious numbers. All it takes is some attention to putting together a properly matched and tuned combination instead of going in and just hacking things to pieces and hoping for the best.

With how tunable the computers are and with how little actual interference to performance there is from nearly all emissions equipment, it is very easy to drive a fast car on the street legally.

-Tim

[Featherburner]

Really? I seem to see a lot of cars that are inspected, insured, and carry full street equipment at the track belting out serious numbers. All it takes is money and a lot of it, some attention to putting together a properly matched and tuned combination instead of going in and just hacking things to pieces and hoping for the best.

With how tunable the computers are and with how little actual interference to performance there is from nearly all emissions equipment, it is very easy to drive a fast car on the street legally.

-TimFixed.

[NJSPEEDER]

I would say that applies to going fast with or without a street car. lol

[z28rob18]

I would say that applies to going fast with or without a street car. lol

agree wit that lol but i dont see it as easy as you just put it to make it totally legal and there wont be any hacking goin on i just dont see the car being capable to pass after this project

[NJSPEEDER]

Get yourself a vacuum reference fuel pressure regulator to reduce fuel flow at idle and have someone take care of the tuning that will put the time into making it right, JSPerformance is good for this kind of thing. You may still have to buy two tunes, one for inspection and one for power.

Keep a catted y-pipe around for inspection and leave the AIR and EGR in place for appearances during inspection if nothing else. They can be programmed out of function, but you at least need it to look like they are there, since the car will have an obvious idle they will likely look much closer at it than the average car rolling through the center.

It is doable and really not all that impractical to get a built car through inspection.

-Tim

[Slow96LT1]

just buy a sticker it easier and cheaper

[sweetbmxrider]

2011 is a new sticker and will introduce a new program. there will no longer be a print out for the month, rather a month insert number. good luck buying those :wink:

[LTb1ow]

Where theres a will, theres a way.

[sweetbmxrider]

yeah or state forgery. i forget how that one goes :lol:

[FIcamaroRE92]

I dont get it? a month insert number?????? like a special sticker that goes over the month?

[sweetbmxrider]

its a new inspection sticker with an actual sticker for the month. like new car dealer stickers.

[BonzoHansen]

its a new inspection sticker with an actual sticker for the month. like new car dealer stickers.

That is how it used to be. You got stickers for the year and added the month, which were also stickers (sometimes just paper).

[FIcamaroRE92]

ohhhhhhh I get you now, someone will find away to get around it.........

[sweetbmxrider]

That is how it used to be. You got stickers for the year and added the month, which were also stickers (sometimes just paper).

do you remember back when they punched out the month, going around the perimeter of the sticker? its a terrible system they are changing to. gunna be fun the first year. a whole bunch of bs behind it too and stupid crap that doesn't make sense. well thats NJ, a clusterf!*#

[Slow96LT1]

the streets will still get them (new stickers) or just drive without it

[IROCZman15]

go to newark for fake stickers

[Pampered-Z]

If your saying the cam is 570 lift W 110 LSA you do not have a ZZ4, thats closer to the specs of a 306. If so, you aren't going to get it to pass.

Deleting the EGR doesn't cause the car to fail the sniffer, the EGR is closed until the engine is at crusing speed. the reason a car fails emmisions due to the EGR is when it's faulty and not closing all the way. You've eliminated the possibilty.

[SSMOKIN_Y2KSS]

u guys have this problem too? haha u have to find a hookup really..thats how we do it out here..slip jose a benjamin and he says everything looks great. then he runs the honda civic on the smog dyno and says look at those emissions! best i have ever seen!

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[Savage_Messiah]

WTF is a Trans Am GT. When I first read this thread I thought it said Grand Am GT. :scratch:

http://www.firebirdgt.com/GMPP%20Firebird%20GT.htm

http://www.firebirdgt.com/GMPP%20Firebird%20GT_files/image002.jpg


hahaha.... it says 17 in wheels are massive. lol.

[94LT1m6]

In red at the bottom it say "Package available, january 1997" I thought the t/a GT was 1994 only?