Maximum calculated load - what it does and how to override it .
10-07-2013, 08:49 PM
#26
That's the thing. When I logged back to back today the reported load didn't change like before. I think what Brettus said makes sense. We were just uncovering what the actual load should have been reporting. At least for the loads over 200%. I am trying to sort out what was happening below 200%.
Last edited by slash128; 10-07-2013 at 08:53 PM.
10-07-2013, 11:52 PM
#28
The reason your max came down below 200 is your elevation . This is what switched on the light for me about how it all worked .
It's hard to believe that something so simple kept us all guessing for so long but that
is often the way of things .
It's hard to believe that something so simple kept us all guessing for so long but that
is often the way of things .
10-08-2013, 09:41 AM
#32
Driving my unreliable rx8
https://www.rx8club.com/series-i-maj...5/#post4460567
So if we move the sensor reading post turbo, but pre throttle body then we can possiably rescale it to account for boost. And still have the origional safety it was designed for.
So if we move the sensor reading post turbo, but pre throttle body then we can possiably rescale it to account for boost. And still have the origional safety it was designed for.
10-08-2013, 02:13 PM
#33
https://www.rx8club.com/series-i-maj...5/#post4460567
So if we move the sensor reading post turbo, but pre throttle body then we can possiably rescale it to account for boost. And still have the original safety it was designed for.
So if we move the sensor reading post turbo, but pre throttle body then we can possiably rescale it to account for boost. And still have the original safety it was designed for.
That idea wont work .
The "original safety" can be retained leaving it where it is so long as you understand what you are doing and carefully regulate boost. But you might actually be setting yourself up for an engine failure if you have an accidental overboost.
Last edited by Brettus; 10-08-2013 at 04:14 PM.
10-08-2013, 05:11 PM
#35
Driving my unreliable rx8
Ok, I know i don't word things in the best manor. They make perfect sense in my head but it doesn't transulte to others the way I intend it to.
I read it and reread it.I think I might understand it also.
There is zero reason why it would not work. The sensor will scale high enough to provide 20PSI of boost. I have tested that much. Now if the PCM will take it is another thing all togther. I guess I can test that also.
I am largely agreeing with you on the idea. Using the additional pressure to multiply the Calc load max was one of my origional intentions with this. I remember asking about adjusting that table before. and You said there was no reason to adjust it.
If all the sensor does is help to protect the cat then it is not worth the trouble of doing.
I Think this is right. It is designed to detect atsmopheric pressure and your engine has an atrifical atsmopheric pressure level which makes the sensor useless.
If the sensor does anything more or other then what you propose then the sensor could be negatively affecting your tune. Of course with enough time and knowledge you can tune around it. Or you can expose it to the artifical pressure and scale the tables to accept it.
Now you do have an advantage of Mazdaedit and the knowledge of any more tables that might use a pressure signal. I will be using ME soon, but I have not decided to buy the personal or the pro. I want to edit table names, but have no other reason to buy pro. So I haven't decided if it's worth the extra money.
Thirdly , if you had read this thread and understood it you would realise that your idea wont work in any way shape or form.
The "original safety" can be retained leaving it where it is so long as you understand what you are doing and carefully regulate boost. But you might actually be setting yourself up for an engine failure if you have an accidental overboost.
The "original safety" can be retained leaving it where it is so long as you understand what you are doing and carefully regulate boost. But you might actually be setting yourself up for an engine failure if you have an accidental overboost.
There is zero reason why it would not work. The sensor will scale high enough to provide 20PSI of boost. I have tested that much. Now if the PCM will take it is another thing all togther. I guess I can test that also.
I am largely agreeing with you on the idea. Using the additional pressure to multiply the Calc load max was one of my origional intentions with this. I remember asking about adjusting that table before. and You said there was no reason to adjust it.
If all the sensor does is help to protect the cat then it is not worth the trouble of doing.
I Think this is right. It is designed to detect atsmopheric pressure and your engine has an atrifical atsmopheric pressure level which makes the sensor useless.
If the sensor does anything more or other then what you propose then the sensor could be negatively affecting your tune. Of course with enough time and knowledge you can tune around it. Or you can expose it to the artifical pressure and scale the tables to accept it.
Now you do have an advantage of Mazdaedit and the knowledge of any more tables that might use a pressure signal. I will be using ME soon, but I have not decided to buy the personal or the pro. I want to edit table names, but have no other reason to buy pro. So I haven't decided if it's worth the extra money.
10-08-2013, 07:29 PM
#38
Driving my unreliable rx8
I was hoping to achieve a higher max calc load when I first thought of it. Second a more stable tune that requires less playing with. I've managed to get my command afr pretty close to actual.
Boost moniter interesting. Does me record baro sensor?
10-08-2013, 09:05 PM
#40
Tested it . Several issues
* got a CEL - p0108 baro sensor circuit high .
*had the traction lost light come on ??????
*Sensor itself leaks vacuum and probably boost as well
*only goes up to 18.13psi absolute ( 3.5ish psi gauge) before it tops out in the ECU
So ...... no good for a boost gauge ( or what you were proposing).
* got a CEL - p0108 baro sensor circuit high .
*had the traction lost light come on ??????
*Sensor itself leaks vacuum and probably boost as well
*only goes up to 18.13psi absolute ( 3.5ish psi gauge) before it tops out in the ECU
So ...... no good for a boost gauge ( or what you were proposing).
10-08-2013, 09:26 PM
#41
Driving my unreliable rx8
10-08-2013, 10:14 PM
#43
Driving my unreliable rx8
Thank you for giving it a try. That not what I was after but I do appreciate it. I would have tried it when I get there.
I knew about the CEL, but that can be turned off.
The traction light. Probably a fluke.
The leak might be a bad sensor mine just got a few miniutes of vaccume and it's not leaking.
I knew about the CEL, but that can be turned off.
The traction light. Probably a fluke.
The leak might be a bad sensor mine just got a few miniutes of vaccume and it's not leaking.
Last edited by logalinipoo; 10-08-2013 at 10:30 PM.
10-08-2013, 10:44 PM
#44
I just logged 233% and posted in my build thread 
https://www.rx8club.com/series-i-maj...7/#post4531898
https://www.rx8club.com/series-i-maj...7/#post4531898
Well , this should cancel out any doubts anyone was having about whether this works in ATR or not .