Lower NOx

[Uncle Ben]

I drive by the RapidScan trucks all the time and still get the notice that I have to go to the testing station. I think the guys in the trucks just sit there and drink coffee or whatever. I do make sure that I am either going a steady speed or decellerating when going by the trucks but no luck so far with any of our vehicles with bypassing a test at the station.
Uncle Ben, you'll get me to go to Bud's yet, won't you? Thanks for the cat tip as it may just be required.

I believe the test involves three screenings. If you decell everytime you might be jinxing yourself! I have also heard if they cannot verify your vehicle by clearly recording your license plate you will not qualify.

 

[DaveInDenver]

Correct! When you get your plate renewal notice it will state "No Emission Test Required" I have been exempt from test twice now and I hopefully will get the same news in a couple weeks when the post card should come.

Then it must be that my plates haven't been caught because the 4Runner (which is 100% stock) has had emissions test every time it's eligible. Probably Adolf Air Care just toying with me just to piss me off. If so, I can actually respect that.

 

[Uncle Ben]

Then it must be that my plates haven't been caught because the 4Runner (which is 100% stock) has had emissions test every time it's eligible. Probably Adolf Air Care just toying with me just to piss me off. If so, I can actually respect that.

"Adolf Air Care"......that could just keep me chuckling the rest of the day! Thanks!

 

[PabloCruise]

Please keep us posted Crash, as I suspect EGR related malfunction is plaguing my 3FE...

 

[Crash]

Please keep us posted Crash, as I suspect EGR related malfunction is plaguing my 3FE...

TJ, the EGR tests are very simple to perform. Do you have an FSM? If not I "think" I can scan the tests and email them to you.

 

[DaveInDenver]

TJ, the EGR tests are very simple to perform. Do you have an FSM? If not I "think" I can scan the tests and email them to you.

Here's the one from the 22R-E and 3VZ-FE to give you some reference. It's not tough and probably similar on the 3FE.

 

[Crash]

Here's the one from the 22R-E and 3VZ-FE to give you some reference. It's not tough and probably similar on the 3FE.

The 77exhaustq notes are very similar to the 3FE notes, just drop the 3,500 rpm test number to 2,500 for the 3FE.

 

[leiniesred]

Roadside testing

last month, for the FIRST TIME in my life, I have received a notice that I passed the roadside e-test and I didn't have to go to the station!

Sure it was in the MR-2 Spyder and not my truck, but it CAN work I guess.

I wasn't trying to pass the roadside e-test because my truck never passed even when I made a concerted effort to hit the roadside stations at the right time, right frequency, accelerating, blah blah blah.

It looks like you may need to be running REALLY clean to pass the roadside test. (The MR-2 Spyder is a ULEV rig)

 

[Rzeppa]

X2 on what thefatkid wrote. EGR is all about NxOx. Stupid thing is, it is not an issue where we live due to our elevation. Higher combustion temps are what causes higher NxOx, and backing off on your timing may be the easiest way to pass, assuming your EGR is functioning as intended. I would look to these two areas before moving your registration.

 

[PabloCruise]

The 77exhaustq notes are very similar to the 3FE notes, just drop the 3,500 rpm test number to 2,500 for the 3FE.

Man, you guys are awesome!

Much Gratitude!!!

 

[leiniesred]

Talked to my father in law.
Crash: Go to aa performance muffler on broadway near hampden and talk to Scott.

The trick seems to be that cheap cats don't contain iridium. This shop has tested like 50 different cats before they found a good vendor. Bring your checkbook. It won't be cheap.

The other trick is to run race gas. The higher octane burns slower thereby lowering combustion temps and nox.

 

[Crash]

Thanks Rudeboy! The cat that is on there now cam from AA but is about five years old or so but I will give them a call. I have a 50/50 mix of 91 and 100 octane in the tank now. Just brought home the secret weapon from Deano's after helping him stab his new Marlin tranny in his '85 Hilux this morning: the Weld Racing super lightweight wheels with some nearly, but still good enough, worn out BFG AT's that are each about 20 lbs lighter than the Eagle/Yokohamas that are on Bart now. That will help greatly in lessening the load on the engine while it is on the dyno. I'm buying the wheels back from Dean and will probably have some Eagle black rock crusher 15x8 wheels for sale real soon. Still waiting to hear from BVB for some inside poop and passing emissions and I'm sure he will have some good advice as have all the rest of you. Thanks!!

 

[Uncle Ben]

Thanks Rudeboy! The cat that is on there now cam from AA but is about five years old or so but I will give them a call. I have a 50/50 mix of 91 and 100 octane in the tank now. Just brought home the secret weapon from Deano's after helping him stab his new Marlin tranny in his '85 Hilux this morning: the Weld Racing super lightweight wheels with some nearly, but still good enough, worn out BFG AT's that are each about 20 lbs lighter than the Eagle/Yokohamas that are on Bart now. That will help greatly in lessening the load on the engine while it is on the dyno. I'm buying the wheels back from Dean and will probably have some Eagle black rock crusher 15x8 wheels for sale real soon. Still waiting to hear from BVB for some inside poop and passing emissions and I'm sure he will have some good advice as have all the rest of you. Thanks!!

Easy, get rid of the anchor and install some domestic fuel injected powa! Problem solved! Vroooom!

 

[Crash]

Easy, get rid of the anchor and install some domestic fuel injected powa! Problem solved! Vroooom!

Uh, you did that, didn't you UB? How soon after you made that "improvement" did you sell that truck?

 

[Uncle Ben]

Uh, you did that, didn't you UB? How soon after you made that "improvement" did you sell that truck?

Good point! It was one of the worse choices I made....selling that truck! I wanted an 80 and the family hated the ugly brown pin striped interior of the 62 and wife put foot down and said one wagon was enough. Seriously, a fuel injected V-8 with 4L60E auto and two t-cases made that truck great! If and when I get another 62 I will do the exact same powertrain and put the whole thing on an 80 frame!

 

[PabloCruise]

Thank you guys again for the help, here are some scans for 3FE EGR test from the '88 FSM if any future searchers come looking to lower their NOx...

My vac modulator caused the vac gauge to creep off 0 ever so slightly when engine cold @ 2500 RPM. I will replace, but I am wondering if this could cause loss of idle when hot...

I need to start a new thread on my 3FE.

 

[leiniesred]

Crash: James' cat was about 3 years old and also from AA Performance.

 

[Mendocino]

Can someone post a link to the statute/bureaucratic fiat that changed the Nox levels? I would like to better understand this.