lb7 cali emissions - Page 2 - Chevy and GMC Duramax Diesel Forum
01-04.5 LB7 Duramax Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission Ect

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Old 05-14-2012, 11:22 PM   eBay Motors  #11 (permalink)
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Quote:
Originally Posted by YAMAHA1 View Post
as far as the cat, never had it. i bought the truck brand new and it never had it. infact this makes me wonder if it has anything for emissions. my truck was one of the first duramaxes in our area. funny thing is just to be an ass i stopped at a stealership here in town that i had problems in the past with and asked them if they had a 4wd, crew cab dually duramax. the f*k'n salesman laughed and said with a cocky attitude " good luck finding that truck, ur just lucky to find a regular cab with the duramax." so on the way back from grabbing my new D-Max dually i stopped at the same dealership. well when i parked it a bunch of salesmen came out to check out the truck, for some of them it was the first crewcab D-Max they had seen in person. when i seen the dumbass sales guy, i rolled down my window and said " f*K this must be my lucky day". rolled up the window and drove away. anyway the look on the guys face when he seen it was me, PRICELESS.
2001 MY truck with LB7 both CA and fed emissions did not have cat nor EGR. Cat and EGR started with the 2002 MY for CA emissions.
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Old 05-27-2012, 04:15 PM   eBay Motors  #12 (permalink)
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I have a 02 with the cali emissions, I want to do away with all of that, pump is making horrible noises now anyway, i bought a blocker plate to go into the exhaust, but what about the relays and the cooler tube? can anyone tell me what i need to do away with all this on the motor and in the exhaust, to be done the best way. dealer will flash the computer to standard emissions if i can remove everything
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Old 05-27-2012, 04:33 PM   eBay Motors  #13 (permalink)
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I dont think the dealer will do that...


Best way is to buy a non emissons Y bridge, shorted OEM belt from non emissions 02, and a passenger up pipe to totally delete the EGR. Then tune it to rid the ecm of the CEL's.
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Old 05-27-2012, 04:42 PM   eBay Motors  #14 (permalink)
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X2 on what Brian said,....

the heads are also a little different and so is the turbo flange IIRC
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Old 05-27-2012, 04:42 PM   eBay Motors  #15 (permalink)
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thanks, will start shopping, any vendors here that would carry everything
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Old 05-27-2012, 10:49 PM   eBay Motors  #16 (permalink)
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Do not remove the 2nd baro sensor that is behind the fuel filter. It only needs to be electrically connected so the ECM can "see" it. If you remove it you will get a P2227 baro sensor code and your performance will suck. There is no setting in EFI that I'm aware of that will prevent this code should the sensor be removed (from Guy at SoCal diesel). If you remove all of the other solenoids, there are more DTC MIL and test enablers that needs to be set to "Not reported." They are: P0401-P0409, P0489-P0490, P1404,P2141-P2145.
Also B1501 to 300, B1504 to -39 and B1505 to 151 to disable EGR function.
That should do it.

If you are not running a big tune, simply disabling the system is sufficient to stop EGR function since it takes 20lbs of boost to overcome the spring of the vacuum operated EGR valve. Its the cheapest blocker plate you can get. Try this first before you drop coin on up pipes and stuff to remove the cooler. I left my cooler in place along with my EGR valve. Only thing I removed was the pump and solenoids and saved some money in the process.
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VW '02 Jetta Wagon TDI 6 spd ERF manual, DLC520 Bosio nozzles, Malone stage 2.
VW '01 Bug TDI 6 spd ERF manual, T-4 injectors, Malone stage 2 tuning. My FUN summer driver.
Fuel mileage? Who cares, its a diesel.
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Old 06-01-2012, 09:48 PM   eBay Motors  #17 (permalink)
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so i have removed the pump, what do i do with the vacuum lines now, remove or just cap it
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Old 06-02-2012, 10:05 PM   eBay Motors  #18 (permalink)
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Originally Posted by ftgulal View Post
so i have removed the pump, what do i do with the vacuum lines now, remove or just cap it
Does it sound better?
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Old 06-02-2012, 10:34 PM   eBay Motors  #19 (permalink)
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don't wanna hyjack, but how can I pass emissions in Cali for base if I don't have an egr at all or a cat? I have an 04 lly
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Old 06-02-2012, 11:11 PM   eBay Motors  #20 (permalink)
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Anyone know how to get rid of the EGR and all that without having codes? I know places that can pass emission without looking...
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