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I guys, I just got my first Duramax. It's a 2006 GMC Sierra 2500. I got it from the auction in MO. My buddy owns a dealership, so he was able to get it for me. He took it to get it smogged, and it did not pass. This is what the smog report said in the comments.

EGR removed, no EO for air intake,no catalytic converter, no EO # for performance tuner, Black smoke during BAR Snap Test.

ALSO: Missfire

So i did not know that the truck wasn't stock, nor did my buddy.

If i knew it has this stuff on it, I would have taken the Tuner and KNN intake off before the smog. If anymore can help with some other issues, that would be great. Thanks guys.


even if you had pulled the tuner and the intake off before smog they would still have caught the missing cat and egr.

unfortunately your options in this situation are to either repair the truck and return it to its factory state, or see if a few bills falling on the floor might help pass the truck.


edit, just noticed your name.... and i can assume i know what state we are registering this in.... my condolences.
 

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No offense. I just get tired of the bad rap a few yahoos out there give K&N when they don't know how to use it correctly. I've run K&N products in 2 prior Duramaxes, and several cars. They worked great. Their filtering does a good job as well. K&N is the only cold air intake I will use. I also use their drop in filters for existing stock filter boxes.

I only ask this because you are making an unsubstantiated argument that is widely disagreed with. What are you using to evaluate that this filter is "working great".

Just because the engine doesn't seize does not mean the filter is working well. Have you taken the engines apart to look at scoring on the cylinder walls, or done any flow tests on the intake to back up that statement?

The issue with oil coating the MAF and what not i agree is poor maintenance and over oiling of the element, but what quantitative data shows this filter is better than a paper filter? The manufacturer (paper or otherwise) really cant be trusted as there testing is going to be designed to maximize the results of there element.

Im not trying to be difficult here, im just asking for information because you are doing exactly the same thing as the anti KN guys here, just in the opposite direction. "i believe blah, because no reasons besides i said so"

I feel like the oiled filters are a gimmick, there a pain in the butt to clean dry and oil and i think they are just a headache overall regardless of there efficiency, but that's my opinion. They may filter very well, but if i have to either have 2 filters, of have the truck down for a whole day while the filter dries, that's just not useful to me.
 

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Shameless plug, not affiliated in any way, but since we are talking about ordering stuff...

I highly recommend dmaxstore.com. Great prices, and wonderfully helpful staff if you ever have questions.

My Allison service package just arrived. Transynd + filter. Extra gallon for transfer case fluid change.

If your looking for stuff, I highly recommend them if you are local to Sacramento, you can pick up your order in shingle springs, short drive up hwy 50.
how does that help the OP register his deleted truck in the peoples democratic republic of california?
 

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If you read, it is stated quite clearly how it is related. Troll much? JWC

Here is a recap since you apparently missed it...
  • He needs to buy stuff, quite a bit.
  • He is in the Sacramento area, as stated.
  • Dmaxstore.com is located very close to sac, and has great prices on some of the things he needs. He can pick it up rather than paying shipping.
  • I also mentioned in another post, where he said he was having difficulty finding a stock exhaust. I pointed him to another area near him that many people wish they had near them, recycle road in rancho cordova. I guess by your logic I should not have mentioned that resource either?? 'dunno;
no, not a troll. how does a good deal on aftermarket parts, in particular transmission fluid, help him restore factory parts? its aftermarket parts that got him in the place hes in now. Unless i have missed a whole section on there site, they do not sell factory equipment. If you pointed him to a place that sells used factory stuff, thats great, and probably does help. I like duramax store too, i just dont see how they would help the OP. A shameless plug would imply that you have a financial motivation to promote this brand, hence, not exactly helpful to the OP, and kind of a grey area on the forum as well.

First definition in google for shameless plug:

A “shameless plug” is a term often used on the Internet to refer to a time when someone tries to include (or “plug”) some information that helps advance their own selfish interests. And that information is usually a little bit off-topic.
 

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https://dmaxstore.com/products/?route=product/product&path=818_943_949&product_id=577
They sell some GM factory stuff, and some better than OEM replacements, as well as aftermarket.

What is hilarious, is I made a point to poke fun at needing to disclaimer everything to not get flamed in an earlier post in this thread, didn't take long.

@CaliDude, if you want any advice, or even to meet up some time since we are a town or two away, shoot me a DM. I promise I won't give you a hard time if you don't have perfect grammar, or recommend anything in passing that might be helpful, or talk shit about your K&N filter every time you mention it.


Im sorry that you feel that way. I dont feel like you needed to disclaim everything or anything, i was simply asking how that post pertained to the OP's issue. I still do not feel that it does. What it does do, is makes it look like you are affiliated with DM store trying to push there brand. Im sorry if i misunderstood what you were trying to get at, however that is how it reads based on the word choices you made. I also do not see how a CV shaft helps the OP. What i am not seeing on there site is anything in the way of factory exhaust, cats, and other components to restore the truck to stock, though i will admit they do appear to have the EGR valve and gaskets for his truck, though i believe he has already purchased those from ebay per a previous post.

I simply asked you to explain the relevance of your post as it pertains to the OP, and instead you come back with a bunch of attitude. Im sorry if you applied tone to my post in your head that was not there.

I will admit that my post may have been short and lacking detail that could have avoided this issue, for that i apologize. I do not think that asking you to explain how the post you made was relevant was wrong though. At this point from reading the OP's responses it sounds like he has sourced most of the parts for the truck excluding the exhaust.

To that end i would recommend looking to see if there is an intact exhaust system at a junk yard that could easily be put on the truck to pass inspection. At that point the truck would be legal to register, and that would either give OP time to source proper parts for the truck, or to hit a big pot hole, his choice. It might not even hurt to look on craigslist for someone wanting aftermarket exhaust, see if they will just trade you for there old factory hardware, or see if there's someone selling a factory exhaust.
 
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