2001 Chevy Tahoe 5.3 4wd
I?ve already tuned the VE and Maf last year. Truck has been great. It now burns oil (valve stem seal) and killed the o2 sensors. Runs pig rich with them turned on. I don?t want to replace the sensors until we drop in a 6.0 in a few months. In the mean time it has to run reliable and well for work. Just shutting off LTFT and STFT will disable the high octane spark table right ? I dont want that. What so you all recommend?
they are $32 dollars new. Replace the O2 sensorsOriginally Posted by Aaronwelling1
No one is going to come on a public forum and tell you how to defeat your emission controls. EPA 101.....
EFI specialist
Advanced diagnostics, tuning, emissions
HPtuners dealer and tech support
email=[email protected]
I have an automotive account. More than $32. But why would I spend that anyway just replace again in two or three months.
I know about emissions. We don?t have emissions. I know how to bypass that anyway. That?s not what I?m asking.
Apparently, you don't. If you're in America, you have emissions. To think you don't is idiocy. It is a federal offense to disable or remove emissions equipment, anywhere in America, whether you have an emissions inspection or not.
EFI specialist
Advanced diagnostics, tuning, emissions
HPtuners dealer and tech support
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Dude. If you?re here to just be a jerk and rude then go away ! I asked a simple question on how those setting affect the spark table use by the pcm. Go rant and be useless somewhere else.
Due, I'm telling you, you probably won't get the help you're looking for and told you why. Not trying to be a jerk, just telling you how it is.
You want to ask questions about actual tuning you'll get plenty of help. Ask about emissions defeat, disabling O2s, deleting cats, anything like that, crickets.
EFI specialist
Advanced diagnostics, tuning, emissions
HPtuners dealer and tech support
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I don't give a shit, go ahead and delete the emissions lol.
Sure you can run in open loop, people do it all the time. This HiTech guy runs a business, so it's best for him to not say certain things. Where as me, just some dude with a keyboard has no problems telling you what you can do. It's totally up to you the user to make those changes and not me.
Disabling the fuel trims does not cause it to run off the low octane table only. Putting it into speed density does that. So if you want to turn the trims off, just set them to disabled and carry on.
2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.
If you don't post your tune and logs when you have questions you aren't helping yourself.
bosch $23 or denso at $29
https://www.rockauto.com/en/catalog/...2)+sensor,5132
I do give a shit. It has nothing to do with running a business and not saying "certain things". I fix cars for a living first and foremost. I have always been anti cat delete, emissions delete, etc. Every time I read about someone deleting cats, O2s, etc. because their piece of shit burns oil, etc. it pisses me off. Every time I read someone encouraging that, it pisses me off. It's just one more POS shitting up the place. Be a responsible car owner and fix your shit.
Rant over.
EFI specialist
Advanced diagnostics, tuning, emissions
HPtuners dealer and tech support
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You sound like the type of guy that would add a cat to a classic car too. I'm not trying to get into a pissing match with anyone as you are someone that has helped many people on this forum with your knowledge.
I fixed cars for a living too in a shop years ago, we always tried to do it right when possible. Even when I do repairs at home for myself and others I will buy the correct parts to make the proper repairs. But I also will not do certain things for custom applications, race cars, the "offroad" vehicles I like to work on because I can and have the ability to. That doesn't make me a POS or others. When they start regulating the airline industry and the freight/cruise ships that cause far more harm to the environment, that's when I'll start to care more.
2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.
If you don't post your tune and logs when you have questions you aren't helping yourself.
Ok perfect. But pardon my ignorance as it?s been over a year since I?ve thought about this. Isn?t turning off the ltft putting it into speed density ? Or is that just when the MAF is disabled ? As in turning the settings to the point it doesn?t read from the MAF at all.
Which begs a follow up unrelated question. If I set the MAF as the primary and only fuel trim feed above say 1000 rpm can I ignore the VE table ? My thought being with the VE table off and the upstream 02 sensors off I can do a simple redneck fuel control based off of load and rpm through the MAF chart. Meaning lower fuel in cruise range but add fuel for power and motor protection up higher for like when I pull the trailer ( which occurs about 50 percent of the time this thing is on the road )
BTW thanks for actually helping and answering questions ! I?ve tried searching for the answer for a couple days on my own but there?s so much to sort and not much directly giving answers.
Changing the tune in any way other than the factory calibration is messing with the factory emission certification. You do do that don't you. You do change factory tunes don't you. And I don't care if you say your tunes produce cleaner tail pipe emissions. Even that is not allowed.Are you going to say you never install an aftermarket part that is not CARB certified? too? You are kind of going off the deep end on this I have to say.
Last edited by 2xLS1; 02-21-2024 at 08:05 PM.
Edcmat is right. I hate the redneck bs, too. 29 bucks for a Denso. They tolerate contaminants better than any of the others. OP is too lazy to do it right.
It takes 3 hrs to replace the valve stem seals, and that's taking your time. No excuse. Lazy redneck bs that other people have to put up with. Other people have to pay for his mistakes. Net-negative impact on society. OP can put in the effort or fuck off.
Such virtue on a forum for a product specifically for changing factory calibrations. LOL
I have installed cats on old hot rods. I've recommended to many more as well. Mainly older folks with really nice resto mods that hate the stink of the GMPP crate motor.
Ah yes, "I'll care more when they care more". To me that's the same as throwing litter out the window because there's litter everywhere. To me, my attitude is "do your part".
EFI specialist
Advanced diagnostics, tuning, emissions
HPtuners dealer and tech support
email=[email protected]
Yes it is and yes I do. But there's a huge difference in tuning as a repair or tuning just to defeat.
I don't think I'm going off the deep end. The guy comes on here and wants to know how to turn off his O2s because his POS is burning oil. C'mon man.
Thankfully the EPA has allowed us (aftermarket tuning industry) to continue as a whole, in general, only focusing on the most serious emissions defeat violators. So to me that says they at least at some level understand there's a difference in the way things are done. There are those that try to do things the right way and those that just don't give a shit. I prefer to do things the right way. I also prefer to encourage everyone else to do things the right way.
If we all don't give a shit because the guy next to us don't give a shit, where will we be in 20 years?
If we continue to encourage this kind of action publicly, where will our industry be in 20 years?
EFI specialist
Advanced diagnostics, tuning, emissions
HPtuners dealer and tech support
email=[email protected]
Those stupid covid masks people were wearing are actually particulate masks. Image search 'China smog mask' or 'China bottled air' to see the non-virtuous People's Paradise where everyone is LOL'ing.
Besides. This software is locked down enough.
Wow. One actual helpful post. The rest are presumptuous pricks assuming details they are too lazy to ask about. You individuals really didn?t need to respond at all since you didn?t have anything nice or productive to say no did you. Could have just moved on. Classic stereotype online forum behavior. You should be ashamed of yourself. I know you?re not. But you should be.
You're blowing oil smoke on public roads. You come asking how to defeat emissions and act entitled that we should risk further removal of software features. You do this so you can...keep blowing oil smoke on public roads.
No, we're not ashamed. We're responsible adults. Fix your problems. Don't shove them off onto other people.
Net-negative impact on society.
