Removing rear O2 sensor on 01-newer PCMs -- Things you should know

[Sinister Performance]

It is typically pretty easy to find the correct OSID.. chances of it being supported in tt may be slim but you can fairly easily add it.

Oh yea? Then why don't you explain it then?

You wonder why so many people give you grief, this is why. You drop these one-liner posts, telling people to do something but never explain how to actually do it. Makes people wonder if you really know how to do it or if you're just giving advice you got from another forum or elsewhere on the net.

It doesn't sound like this guy even has TinyTuner, let alone knows how to find the correct OS and/or how to add that to TinyTuner if it isn't currently supported. So why don't you explain to him how to do that in your next post on here so you can actually post something helpful... Is that too much to ask?

[darkhorizon]

So why don't you explain to him how to do that in your next post on here so you can actually post something helpful... Is that too much to ask?

The problem is that there is only about 2 or 3 people that I know of and they don't like doing it.

The chance that he has the supported OSID unlocked in TT already is fairly high... If that is the case then a 2000 word post explaining how to modify the TT database would be a bit of a waste of time. I would probably end up offering to fix a TT database to support the OSID on his car, but i would do it with a disclamer of the fact that it would be largely untested.

Flubbing through blindly mapping OSID's is not the best practice to get into, so I dont see any reason why I would explain it in detail anyway.

It is typically pretty easy to find the correct OSID

I have explained this MANY times on both this forum, and cgp. There is 2 stickies at the top of the tuning section here explaining this, and 1 on cgp explaining this, all with my username on them......

X2. I have an 03 and I use hpt beta. I really needed a way to get tiny tuner to open my tune.

If I am going to get "busted" for the 1liner posts... then I dont really see why I should have to answer these "omg I need shiz to work" 1 liner posts with a blob of info that might be completely unrelated. I cant offer help to someone that doesnt even offer up what car they are working with? Guy posts he has an "03", which turns out to not even be a grand prix????

Give me an OSID, model, engine, transmission, and I MAY help you find a file... but you have every ability to go and find the file youreslf on ANY of the grand prix forums thanks to me, as I have made this availible for all on both of the main 3800 forums now.

I think that is the only way to get an HPT file on Tiny Tuner but I could be wrong someone may know something I don't.

I didnt really think that anyone was still confused on how TT works with HPT..... Its this simple... The site he downloaded TT from has an even more indepth explaination on how to do this as well.... Its not MY FAULT people are helpless and refuse to even read things when handed to them on a silver platter... I never had anyone spoonfeed me information 2000x before I understood it, I found out how to do everything on my own.

1. get a STOCK file with the same OSID that you have unlocked for your car in HPT.
2. Load that STOCK OSID file into TT, and bring it up to speed with all of the change you have made in HPT. You can fairly easily transfer most anything you need with copy and pasting... but heck usually its a pretty good chance to start fresh again with your tuning... as most people have way jacked up their maf sensors and stuff anyway.
3. Load the TT modified BIN file into HPT.... HPT will then automatically convert this to a HPT file, and let you edit it further, and ultimately upload it to your car, just like everything is normal.
4. The catch22 here is the fact that you now want to make a change (fueling/normal stuff/whatever).. you then lose the ability to just pop a file back in TT to make that specific change you needed. The fact is, i have never really went back to TT for things on pre 04 cars, as HPT and DHP both have good maps for most anything you need aside from AFR spark and Cat testing... both of which are never adjusted after they are changed to what they need to be.

Well having a cam , the first 5 mins of drving ltft goes to 16.4. It causes my cause to almost stall when coming to a stop. The effects were not felt when I had a stock cam

This is not cat test, as it only happens during cruise. You can never idle and hit cat test... I have tried.

Welcome to the world of trying to run a xp/s1x/nic+ sized cam on a narrowband. It happens, its always going to happen. I have offered my solution up many times, and that is converting to run in full time open loop mode which eliminates false readings from the narrowband.

[CrazyGuy03]

This is not cat test, as it only happens during cruise. You can never idle and hit cat test... I have tried.

Welcome to the world of trying to run a xp/s1x/nic+ sized cam on a narrowband. It happens, its always going to happen. I have offered my solution up many times, and that is converting to run in full time open loop mode which eliminates false readings from the narrowband.

your right it happens when its first started and I start to drive . But it does come about randomly sometimes there after, so im guessing thats the true cat test

so using my aeroforce gaues (narrowband) to monitor my LTFT is , say, pointless? cause after a few maf tunes, everything seems in check, locks at 0 and runs fine

How is running in open loop going to change things? I have a wideband but unfortunately during the time of my cam install, the stainless DP on the car, has no rear o2 bung so Im waiting for that to be installed so I can run the wideband again

got a link to explain this? I have NO issues with my tune except for the random 16.4 , and you claim its from my tune not a cat test

[Sinister Performance]

Welcome to the world of trying to run a xp/s1x/nic+ sized cam on a narrowband. It happens, its always going to happen. I have offered my solution up many times, and that is converting to run in full time open loop mode which eliminates false readings from the narrowband.

Well I don't know what you are doing wrong but I've tuned dozens of cars (3800's and V8's) with aftermarket cams, some bigger than the XP/S1X/NIC. I've never had an instance where the closed loop system refused to work properly. I've always been able to tune the car using EITHER the fuel trims (working off the narrow band O2(s)) or a wideband; and then been able to send it out the door with the narrow band O2(s) still in there, fuel trims working, and closed loop enabled without any issues. Your notion of disabling closed loop operation and then sending it back to the customer is a bad idea, in my opinion. And I'll give you one example why...

Dave over at TripleEdge had a car come into his shop that had an open loop tune done. But after the customer drove the car around up here for a while (I think he moved up here from somewhere down south), it was running overly rich and the PCM had no way to lean the fuel back out because closed loop was disabled. The guy is damn lucky his cylinders didn't get washed down which would have trashed the block by the engine running so rich before the issue got corrected by Dave. This is one of the problems with open loop tunes. Move from one area (with a certain climate) to another and the way the engine runs is going to change. That is a fact.

Open loop tunes are great if you are going to be monitoring your car 100% of the time, and can make changes yourself if you see something going wrong. But that isn't practical. I don't know about you, but I rather enjoy driving my car and I do use it for pure transportation sometimes rather than just 100% leisure. So the thought of having a laptop on-board 100% of the time I drive it and having to keep one eye glued on that laptop doesn't appeal to me. Not only that, but I'm not the only person who drives my car. Sometimes my wife likes to drive it as well. And I'm sure just about everybody on here is going to feel the same way. I wouldn't run an open loop tune on ANYTHING unless it was a last resort (because you have an issue that prevents the engine from running correctly in closed loop). But like I said, I have yet to stumble across an application that can't be run in closed loop. And I've tuned some pretty healthy setups (I've tuned over 1000 PCMs and chips for over 10 years so I've seen quite a lot).

I'm not saying an open loop tune can't work, I'm just saying it isn't practical for 99.999% of the people out there. You can, of course, do whatever you want with your car.

Oh and thanks for the long post explaining pretty much nothing about what was asked earlier. If you don't know, then just say you don't know or don't post anything at all. No need to post fodder saying "it will take too long to explain" or bashing people because they don't know where to find all the information you've found in your internet searches.