I've read somewhere that making multiple adjustments to a canned tune (through Modify Tune) without resetting the adjustments in between will make the adjustments add to each other. Is that right? Does it apply to all parameters?
For example, let's say I'm seeing KR so I adjust WOT fuel +5% and install the tune. I do some logging and still see a little KR so I make the WOT fuel +6% instead of +5%. Am I now at +6% or +11%? Now say I forgot to adjust my fan temps so I go and tweak those; the "adjust tune" menu still shows * next to the WOT fuel I adjusted earlier. Did I just apply another 6% (or 11%) over what I already adjusted?
Hope this makes sense.
multiple tune adjustments - are they additive?
Moderator: mikel
RE: multiple tune adjustments - are they additive?
when you go back in to modify parameters again, it should still have your previous setting showing...
so if you adjusted the WOT to +5% before, when you go back in to modify that parameter again, it should still have that +5% setting showing there... so then you go one more click to make it +6%, and reinstall the modified tune... your WOT setting will now be at +6%... not +11%...
and yes, the parameters you modified before will show a * next to them... and if you adjust something else, that +6% will NOT be ADDED to the previous +6%... your setting will still be at +6% in the tune...
hope THAT makes sense...
so if you adjusted the WOT to +5% before, when you go back in to modify that parameter again, it should still have that +5% setting showing there... so then you go one more click to make it +6%, and reinstall the modified tune... your WOT setting will now be at +6%... not +11%...
and yes, the parameters you modified before will show a * next to them... and if you adjust something else, that +6% will NOT be ADDED to the previous +6%... your setting will still be at +6% in the tune...
hope THAT makes sense...
06MonteSS / DiabLew Tune
2014 Camaro SS - 2SS, RS pkg., short-throw shifter, NPP perf. exhaust, BMR strut-tower brace, Cold Air Inductions cold air intake
www.diablewtune.com -- www.diablocustomtune.com -- www.diablocustomtunegm.com -- www.diablocustomtuning.net
2014 Camaro SS - 2SS, RS pkg., short-throw shifter, NPP perf. exhaust, BMR strut-tower brace, Cold Air Inductions cold air intake
www.diablewtune.com -- www.diablocustomtune.com -- www.diablocustomtunegm.com -- www.diablocustomtuning.net
RE: multiple tune adjustments - are they additive?
That's what I would expect to happen but a post I read (a very detailed one at that) indicated that this was not the case. Just wanting to make sure.
Thanks.
Thanks.
RE: multiple tune adjustments - are they additive?
nah, that post is wrong...
where is it??
where is it??
06MonteSS / DiabLew Tune
2014 Camaro SS - 2SS, RS pkg., short-throw shifter, NPP perf. exhaust, BMR strut-tower brace, Cold Air Inductions cold air intake
www.diablewtune.com -- www.diablocustomtune.com -- www.diablocustomtunegm.com -- www.diablocustomtuning.net
2014 Camaro SS - 2SS, RS pkg., short-throw shifter, NPP perf. exhaust, BMR strut-tower brace, Cold Air Inductions cold air intake
www.diablewtune.com -- www.diablocustomtune.com -- www.diablocustomtunegm.com -- www.diablocustomtuning.net
RE: multiple tune adjustments - are they additive?
aaaah... you're reading it wrong...
he's saying, if you're at 10%, and you see/feel that you need to be at 12%, to not add another 12% to it... only add another 2% to make it be a total of 12%...
so yeah... you're reading that wrong...
he's saying, if you're at 10%, and you see/feel that you need to be at 12%, to not add another 12% to it... only add another 2% to make it be a total of 12%...
so yeah... you're reading that wrong...
06MonteSS / DiabLew Tune
2014 Camaro SS - 2SS, RS pkg., short-throw shifter, NPP perf. exhaust, BMR strut-tower brace, Cold Air Inductions cold air intake
www.diablewtune.com -- www.diablocustomtune.com -- www.diablocustomtunegm.com -- www.diablocustomtuning.net
2014 Camaro SS - 2SS, RS pkg., short-throw shifter, NPP perf. exhaust, BMR strut-tower brace, Cold Air Inductions cold air intake
www.diablewtune.com -- www.diablocustomtune.com -- www.diablocustomtunegm.com -- www.diablocustomtuning.net
RE: multiple tune adjustments - are they additive?
Good to know. Thanks.
RE: multiple tune adjustments - are they additive?
Yea, I don't think he could have said it any worse.... Also I don't know why anyone would bother saving it to the PC between every adjustment and then re-downloading it to the Predator. It's still there from before. You might want to save snapshot tunes on the PC as you dial it in but there is no reason to download it to the Predator again while you're doing that.
To try to clarify a bit. Think of it this way.
You have tune files on the predator with settings of whatever. Could be the included tunes or it could be one or more custom tunes you downloaded to the Predator. The Predator does NOT modify these tune files (hang with me here). They will remain unchanged on the Predator.
When you go into Modify Parameters the Predator will keep a list of the changes you make. This list is kept separately. You are not making changes to one of the above mentioned tune files (the one you have selected). So when you see stars by parameters in the Modify Parameter section that means that you have made/added changes to the list. The Predator does not look at the selected tune file to see if it has been changed (it hasn't). When you download a tune file to the Predator it cannot tell if it was previously modified by the Predator.
So now you have a list of changes and a selected tune file. When you download/write the tune to the car the Predator will make a COPY of the tune file and apply the changes from the list to the copy. It is this copy that gets written to the car. The same thing happens when you upload a tune from the Predator to the PC by selecting "Get Last Tune Written". The only tune file that doesn't get copied and changes applied as it leaves the Predator is the Original Backup. Even if you have changes in the change list they will never be applied to the Original Backup when it's restored to the car or copied to your PC.
This is why you can select a different tune file on the Predator and it will ask you if you want to reset parameters to default. Reseting parameters to default only resets the change list. If you don't reset parameters the change list you made with the last selected tune will be applied to the newly selected tune file copy AS IT LEAVES THE PREDATOR if you write it to the car or save it on your PC.
The Predator does not have default values as such. Everything is off whatever is in the selected tune file. For some things like fan settings it will read them from the tune file and display them in the Modify Parameter menu. So that guy (Maddog) was assuming/implying that each time you wrote the "modified" tune to the car you would also save it on your PC and then download it back to the Predator again (as a custom tune) for the next go round. No, he didn't say that in the beginning of the post.
Lets say you did that. Selected a tune, made changes in modify parameters, wrote the tune to the car and then uploaded it to your PC with "get last tune written". When you upload to the PC (and when you wrote it to the car) the changes will be applied to the copy and uploaded. The tune file you save on the PC will now have the changes IN it. Then you download it to the Predator as a custom tune. When you download tune file(s -- you can download multiple custom tune files in the Advanced Tuning screen) it first erases anything in the custom tune area on the Predator and then copies the tune file(s) from the PC to the custom tune area. Now you have a tune file in the custom tune area that DOES have the changes you made before copying it to the PC. If you did not reset parameters from last time, when you write it to the car it would apply the change list to the tune file -- so in that case the changes would be cumulative.
The Predator has no idea what you started with or that some tune file was previously modified by it. That's also why you write down the changes when you save a file on the PC. If you forget there's no way to retrieve that information. I started with the CAI91oct tune. I made fuel changes to get it to 12.7:1 AFR. Saved it on the PC. Then I made fuel changes to get it to 12.2:1 AFR and saved that on the PC. Went back to the 12.7 tune for a while and then back to the 12.2 tune. Then I made changes to get it to 12.0. Somebody asked me how much fuel I added to the original CAI91oct tune to get 12.0 AFR and I couldn't tell them.
Don't know if that helped but that's the best I can do.
To try to clarify a bit. Think of it this way.
You have tune files on the predator with settings of whatever. Could be the included tunes or it could be one or more custom tunes you downloaded to the Predator. The Predator does NOT modify these tune files (hang with me here). They will remain unchanged on the Predator.
When you go into Modify Parameters the Predator will keep a list of the changes you make. This list is kept separately. You are not making changes to one of the above mentioned tune files (the one you have selected). So when you see stars by parameters in the Modify Parameter section that means that you have made/added changes to the list. The Predator does not look at the selected tune file to see if it has been changed (it hasn't). When you download a tune file to the Predator it cannot tell if it was previously modified by the Predator.
So now you have a list of changes and a selected tune file. When you download/write the tune to the car the Predator will make a COPY of the tune file and apply the changes from the list to the copy. It is this copy that gets written to the car. The same thing happens when you upload a tune from the Predator to the PC by selecting "Get Last Tune Written". The only tune file that doesn't get copied and changes applied as it leaves the Predator is the Original Backup. Even if you have changes in the change list they will never be applied to the Original Backup when it's restored to the car or copied to your PC.
This is why you can select a different tune file on the Predator and it will ask you if you want to reset parameters to default. Reseting parameters to default only resets the change list. If you don't reset parameters the change list you made with the last selected tune will be applied to the newly selected tune file copy AS IT LEAVES THE PREDATOR if you write it to the car or save it on your PC.
The Predator does not have default values as such. Everything is off whatever is in the selected tune file. For some things like fan settings it will read them from the tune file and display them in the Modify Parameter menu. So that guy (Maddog) was assuming/implying that each time you wrote the "modified" tune to the car you would also save it on your PC and then download it back to the Predator again (as a custom tune) for the next go round. No, he didn't say that in the beginning of the post.
Lets say you did that. Selected a tune, made changes in modify parameters, wrote the tune to the car and then uploaded it to your PC with "get last tune written". When you upload to the PC (and when you wrote it to the car) the changes will be applied to the copy and uploaded. The tune file you save on the PC will now have the changes IN it. Then you download it to the Predator as a custom tune. When you download tune file(s -- you can download multiple custom tune files in the Advanced Tuning screen) it first erases anything in the custom tune area on the Predator and then copies the tune file(s) from the PC to the custom tune area. Now you have a tune file in the custom tune area that DOES have the changes you made before copying it to the PC. If you did not reset parameters from last time, when you write it to the car it would apply the change list to the tune file -- so in that case the changes would be cumulative.
The Predator has no idea what you started with or that some tune file was previously modified by it. That's also why you write down the changes when you save a file on the PC. If you forget there's no way to retrieve that information. I started with the CAI91oct tune. I made fuel changes to get it to 12.7:1 AFR. Saved it on the PC. Then I made fuel changes to get it to 12.2:1 AFR and saved that on the PC. Went back to the 12.7 tune for a while and then back to the 12.2 tune. Then I made changes to get it to 12.0. Somebody asked me how much fuel I added to the original CAI91oct tune to get 12.0 AFR and I couldn't tell them.
Don't know if that helped but that's the best I can do.
2006 Magnum SRT8
AFE Stage II
Mopar Cat Back
185* T-stat
RDP tune by Steve
AFE Stage II
Mopar Cat Back
185* T-stat
RDP tune by Steve
RE: multiple tune adjustments - are they additive?
Thanks for the clarification. It didn't seem like the post I had read could have been right (since I've been making some adjustments for months now) but I wanted to be sure. And now I am. 