Who has done a SEPST auto tune?
#42
Here are a few pictures... for posterity sake... and those that may have trouble with words...
Here is an older software level 176 stock (EPA compliant) tune from a Sporty...
Here is a more recent software level 374 stock (EPA compliant) tune...
Doesn't matter if they are Sporty tunes... the concept is the same.
Here is a typical characteristic curve for narrow band O2 sensors...
Here is a typical Lamda/AFR/Voltage table for narrow band O2 sensors...
You know what they say... A picture is worth a thousand words. It may not provide a complete picture... But it's a start.
Lots of clues right there in just a few images...
Here is an older software level 176 stock (EPA compliant) tune from a Sporty...
Here is a more recent software level 374 stock (EPA compliant) tune...
Doesn't matter if they are Sporty tunes... the concept is the same.
Here is a typical characteristic curve for narrow band O2 sensors...
Here is a typical Lamda/AFR/Voltage table for narrow band O2 sensors...
You know what they say... A picture is worth a thousand words. It may not provide a complete picture... But it's a start.
Lots of clues right there in just a few images...
#43
#44
I don't need to buy the POS to be able to figure out what it can and can not do.
#45
So that you can see it does a decent job and stop talking **** about something you know nothing about until you actually use it. So send me the pm and it’s on the way. Until then stop talking **** about it.
#46
It isn’t a miracle ATM but it is set up for the Harley’s warranty and performance specific parts. That doesn’t mean there is no benefit from the product just cause you say so. Every time someone comes on here asking some questions you immediately discredit it before you have even tried it. Makes no sense.
#47
Either try it and prove its a scam or try it and love it. Either way I would like to send one to you so that you would stop whining about it. It works just as clean as my target tune did. Just not as many features. But it is much better than a canned tune and is still warranty compliant. You can hate that all you want but you won’t ever know until you at least try the damn thing.
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04ctd (05-19-2019)
#48
I'm sorry that you don't get the point...
The fact that it's constrained by EPA compliance is one hell of a clue. Another big clue was offered up by FLTRI17...
...I just don’t see the attraction to a wide band system that the closed loop targets are the same as the narrow band targets. I have tuned many big inch builds with the narrow bands with great results and see no advantage to the wide band system unless you can’t figure how to get a close base cal., then the wide bands have a better chance of getting the base close.
Bob
Bob
#49
#50
Either try it and prove its a scam or try it and love it. Either way I would like to send one to you so that you would stop whining about it. It works just as clean as my target tune did. Just not as many features. But it is much better than a canned tune and is still warranty compliant. You can hate that all you want but you won’t ever know until you at least try the damn thing.
So far the counter arguments that I've been hearing go something like this...
1) Billy Bob Joe says it worked for him, so it must do something...
2) HD sales it - and it says "XYZ" - in their marketing material (and even on the box), so it must do what it seems they say it does...
Talk about spewing ****.