PCV with Autotune users poll Part 2

[Ygransom]

My thoughts are if trim is low single digit don't accept - AT is working and adjusted for the different conditions today than when first set up and your base tune is correct. But if the trims are 15-20% consistently than you need to accept as your base tune is off.

 

[R-III-R Turbo]

Sorry for the late reply dude, ain't been back on the site for a while.

The problem that I was trying to fix is not having a tuner within a 4 day weekend trip to tune the thing with the pipe and filter. That being said, I decided to get the PCV+ autotune and load the A/F map that hanso kindly provided along with a modified tune for the ecu that I loaded with tuneecu.

I have accepted the trims a couple of times and the values that it is trying to add or subtract from the map are getting smaller each time. So I am convinced that it is working as advertised. Probably going to accept them one more time and turn the tune % down to 5% and forget about it from there on out.

I have to say that I am very happy with the set up. Power is awesome, fuel mileage is as good as stock, probably would be better if it wasn't for the twitchy right wrist that seems to have developed about the same time the PCV install was done.

sounds like you're on top of it already. @Ygransom gave good advise above.
only thing i could add is that the wideband O2 (which is AT with ability to drive an AFR gauge) along with an AFR gauge would be beneficial - you can see in real time what the AFR is doing.
then wrt accepting trims or not, if it's reading a bit lean at certain throttle % and revs, accept trims at those points if they're trying to add fuel, and vice versa. much faster than plugging in laptop after every spin to try decode what's been going on

 

[1olbull]

I am the one that voted no and here's my reasoning: I voted no because you didn't have a "sometimes" button. When you accept trims you permanently change your base map. Sometimes that is what you are trying to do, sometimes not. If you are playing with a new tune that you are trying to get dialed in the by all means...accept the trims and see what happens. If you don't like the result then reload your base map and start over. However, if you are running a tune that you like or if you are running a bespoke dyno tune then the AT is not something you want dicking around with your performance. I have PCV's on both of my Rockets. One has AT and one does not. Both have dyno tunes in them. The bike with AT on it has the AT turned off. If I were to suddenly move to Denver where the altitude would be a constant factor I would probably turn the AT on and start playing with the tune, but until then it stays off. Why you ask? Because at some point after I had my bike dyno'd I turned the AT on and after a while accepted the trims. Bike immediately started running like $hit and lost power, hard start, poor idle, etc. I reloaded my tune and voila! back to normal.

I don't see why you would want the AT after a proper dyno tune?
Mine has been disconnected, although left in place, in case I give NOS a try.

 

[R-III-R Turbo]

I don't see why you would want the AT after a proper dyno tune?
Mine has been disconnected, although left in place, in case I give NOS a try.

one day the PC5 firmware went corrupt and made the bike run lean. the heat browned the exhaust header dome nuts and baked the cam cover gasket. if it wasnt for my trusty AFR gauge i probably wouldnt have noticed until the engine seized.
i'd imagine it's also handy for people who may want to play about with exhausts and stuff

 

[R3Tex]

I don't see why you would want the AT after a proper dyno tune?
Mine has been disconnected, although left in place, in case I give NOS a try.

I installed AT before I had the Dyno tune. Mine is now turned off in the software

 

[1olbull]

I installed AT before I had the Dyno tune. Mine is now turned off in the software

Same here.
Nels (my tuner) convinced me to leave it mounted in case I wanted a NOS kit.

 

[Neville Lush]

Reading the instructions will always help in this circumstance.....