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Here in Ada county, Idaho, we are allowed up to 40% opacity, it is basically a give them some money for a waste of my time. Both times I have been tested I was at .4% opacity of the 40% I'm allowed, will have to post once cat is gone to see how much of a difference the cat makes. Note: Test are unloaded idle to 2500 RPMs three times, the guy who runs the tests also told me to never let someone else run the pedal, if they blow it up, chances are they are not going to pay for a new engine. at any rate, i usually do idle to about 2000RPM, it just sounds really wound up with no load on it.
From what I heard from a reliable source here in AZ at ADEQ, that the sticker that is on the side of the valve cove is the only way that they can tell if your vehicle is required to have a cat. We tested the this theory with a cummings and a powerstroke, both of them had cats we removed them , they passed the soot test but failed the visual for no cat. We peeled the stickers off both of them and went thru at another station across town they passed the soot test and the visual, with out the cat. I don't know if this holds true in all states, I think it would. I have done over a hundred exhausts and only about 20 of the trucks have had a cat, all of which I peeled off the sticker and have never had a customer come back with a problem in three years.
When I took my truck through emissions this past June here in AZ they just took my 9 bucks and let me go without even opening the hood. The inspector said that because of the governor on the PSd that they won't run the emissions anymore do to it could be harmful to the engine. My Cat isn't gone yet but it will be when I get the new exhaust here shortly, But that is good to know about the stickers being removed.
I smashed my cat on a size 13 boulder and all the guts came out the stright pipe my trucks only a size 10 now i have more power thank you Big Barstow, CA Boulder
I bought my PSD used in..lord help me... California... and well yes, it did have a cat. Oddly enough, CA doesn't test for emissions on diesels...yet. I reckon it's a sign of things to come. It fell off in traffic and so I went with a turbo back 4 inch magnaflow. Good ol Military transfer season brought me up to Washington, where I found out that diesels were subject to emsissions. Ohhh..$#@!, I thought. My engine aside from intake/exhaust mods is bone stock and I reasoned Washington can't be as **** as CA for air emissions. So the emissions folks scanned the barcode on my door and I think it just verified vin, year etc. I didn't see anything specific to Cat's and emissions stuff. Then they asked me to punch the throttle and let go a couple of times..that went against every grain in my shade tree mechanic up-bringin'. Lo and behold..it passed. The test registered opacity..I believe the amount of soot flowing past a light emitter type sensor. The threshold was 40 mine came in at 2. 40 is a great number..lots of room for mods. Washington seems to have a good supply of PSD's. Really, I think soot can only be cooked to a point and a cat becomes just another restricter.
I think the fact that some trucks have it and some don't is screwed up. What is the reasoning behind that from Ford?? If you put on a new exhaust system, how will the inspectors know if your truck had one or not? Yes, it is illegal to remove it, but when asked about it, just say your truck didn't have one to start with.
Hate to dreg up this old thread, but...
The secret is to let the pink/orange sticker on the passenger side valve cover "fall off." It has all the emission data as set-up from the factory. Interesting irony, just read the bureaucracy of state, emission testers, etc. is up in arms here in El Paso county because the commisioners are recommending doing away with the $25-45 annual testing, due to air quality being way under EPA standards. I guess building a money generating machine is easier than dismantling it.
Rezvani's Latest Post-Apocalytic Monster Is a Ford F-150 Raptor Underneath
Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.