What did you do to your NBS GMT800 Tahoe/Yukon Today?

[Bombsquad85]

if it's getting that code it's a short circuit or interference add any new electronics??

Detects a Continuous Short to Low or a Open in either the signal Circuit or the MAF sensor

what is the Value you are getting in grams/second?? <=1.26Hz

the new one could be bad if you could see if you can get a loaner or test it in someone else car

No new electronics. I need to get a scan tool to log any of the info. I only get the code from Advance when I go. Ill see if I can swap with my buddy who has a 2500 silverado with the 6.0

Thanks.

 

[Bombsquad85]

if it's getting that code it's a short circuit or interference add any new electronics??

Detects a Continuous Short to Low or a Open in either the signal Circuit or the MAF sensor

what is the Value you are getting in grams/second?? <=1.26Hz

the new one could be bad if you could see if you can get a loaner or test it in someone else car

Made a quick video of the conditions of the wires and a check for vacuum leaks. I can't tell if there is any. I hear a slight hiss from the throttle body area but I don't think its a leak

 

[Rocket Man]

Made a quick video of the conditions of the wires and a check for vacuum leaks. I can't tell if there is any. I hear a slight hiss from the throttle body area but I don't think its a leak

I don’t think the wires at the MAF are your problem. It might be that air cleaner. It might be dirty or might have got oil on the MAF from it. I would try cleaning it and the MAF.

 

[Bombsquad85]

Also heres a short clip of the exhaust. I had both cats removed. Other than that I haven't touched the exhaust.

 

[Bombsquad85]

I don’t think the wires at the MAF are your problem. It might be that air cleaner. It might be dirty or might have got oil on the MAF from it. I would try cleaning it and the MAF.

So I think you may be partially right. I'm going to replace the filter. As far as cleaning the MAF I don't think its necessary. It's only a couple weeks old with probably 150 miles on it. The filter I think its a dry filter. I've had this same one for over 2 years now lol and never oiled or cleaned it....

 

[Dantheman1540]

I think I have I the escalade variant of this unicorn glass...

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Wow that looks really good!

 

[Keviebear86]

I want to start by saying this may be a stupid question, please go easy I bruise lol

I'm looking to do a cam swap, already have the cam and tuner lined up. I am looking into exhaust options. I want to do long tube headers with a full 3" exhaust (not too loud, but aggressive/this is a daily for the time being). If I run long tubes, am I going to end up being catless? I can get the O2 defouler plugs if needed, but I want to keep my O2 cycles for daily/some highway runs). Any help on this matter would be great, thanks!

 

[Rocket Man]

I want to start by saying this may be a stupid question, please go easy I bruise lol

I'm looking to do a cam swap, already have the cam and tuner lined up. I am looking into exhaust options. I want to do long tube headers with a full 3" exhaust (not too loud, but aggressive/this is a daily for the time being). If I run long tubes, am I going to end up being catless? I can get the O2 defouler plugs if needed, but I want to keep my O2 cycles for daily/some highway runs). Any help on this matter would be great, thanks!

You can get y pipes with cats or without cats from most of the bigger name header manufacturers. The pre cat (upstream) O2 sensors are what your ecm uses for tuning purposes and those stay regardless if you have cats or not. The post cat (downstream) sensors are what the ecm uses to monitor cat performance and you can eliminate them physically and then have them tuned out or use spoofs like antifoulers. If you end up with cats it’s best to have the downstream sensors. On a side note some emissions places have visual inspections that look for cats and will fail you if they’re not there but some people install things that look like cats. My state doesn’t do a visual, they just hook up to the obd port and since my O2 sensors are tuned out everything passes.

 

[iamdub]

I want to start by saying this may be a stupid question, please go easy I bruise lol

I'm looking to do a cam swap, already have the cam and tuner lined up. I am looking into exhaust options. I want to do long tube headers with a full 3" exhaust (not too loud, but aggressive/this is a daily for the time being). If I run long tubes, am I going to end up being catless? I can get the O2 defouler plugs if needed, but I want to keep my O2 cycles for daily/some highway runs). Any help on this matter would be great, thanks!

If you don't need cats to pass visual inspection, just get a catless Y-pipe and have your tuner turn off the rear O2s when they tune for the cam.

 

[BG1988]

Made a quick video of the conditions of the wires and a check for vacuum leaks. I can't tell if there is any. I hear a slight hiss from the throttle body area but I don't think its a leak

you have a air leak on the intake manifold(seals can go bad)..
( you can hear it more in the center, then when the camera is on the pass side area )

or connection to the intake I would inspect every hose .. use something flammable like Axe just only use tiny squirts that stuff has Propane ..you can find the vacuum leak with that just do it on a cold engine

have a ABC rated fire extinguisher on hand just in case..


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