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I did do a data log though and am currently studying where I need to make changes..
I really like my tuner, but I'm having trouble finding good guides on data logging and interpretation of those logs in the WinPV software. Do you have any links to tutorials showing how to do that?
I think part of my problem is I really don't know much about tuning. I have made changes in tunes on bikes for years, but never truly learned the process through and through.
I really like my tuner, but I'm having trouble finding good guides on data logging and interpretation of those logs in the WinPV software. Do you have any links to tutorials showing how to do that?
I think part of my problem is I really don't know much about tuning. I have made changes in tunes on bikes for years, but never truly learned the process through and through.
@Hoyt 1911A1
I'm not as proficient as I'd like to be but do get by pretty well.. I've watch many and I mean a real lot of videos on you tube plus guidance from some really good tuners on here.. Which PV Do you have and what is your bike?? Year model build , throttle by wire or cable etc.. Some bikes have different tables that work together to calculate proper AFR's which are MAP (Load) based or TPS based.. Can you use the WinPv software or do you have to use Dynojets newer system C3? I like the Win PV and it's really not that complicated once you start using it and understand how everything works together..
The best thing for you to do is start your own thread in the Ignition/Tuner/ECM/ Fuel Injection section you will see a sub thread The Dyno Room and then choose new thread.. There you will see which prefix to choose then add your title and in the big box start typing away.. Choose your tuner type and start asking posting and questions.. This way many others will see what you're trying to do and will be able to help you and guide you as well as me.. Without really knowing all the information it's hard to give any direction but you definitely need to start your own thread.. Good luck and look forward to your thread..
Little update..
I got a little over 200 miles on the build and am testing it's ability and must say this bike is a Rocket Ship.. I got the knock retard down to a minimum at 80 kpa and above.. Below that there are no timing issues.. I have taken the bike up to redline and did a few test hits and all I can say is that there's a huge difference over the 110" build.. The biggest issue is no traction coming off the line and pretty much through 2nd gear after that the bike hooks and goes.. 4th gear will get me to 121 mph.. I'm still trying different things with the tune because for some reason I cannot get consistency between data log AFR's, they still bounce around a bit but never go lean, they actually go a little to rich for my liking but I'm thinking it might be the nature of the beast.. I'm trying different things in this thread.. Bike really does run good though..
You are disabling your adaptive knock retard while tuning?
No, plus this was not during a tune session.. I had made changes to the VR tables and downloaded the tune and took the bike for a ride and just doing a data log.. Nothing else.. I never altered any setting in the Knock control section in the PV...
This morning I did bump up the timing 2* across the entire timing advance table just to see if it will pickup knock detection with the Closed Loop mode disabled.. And if nothing shows up in the Data Log I will take a close look at the plugs.. They always give the most accurate evidence of what going on during a combustion cycle..
Reason I ask is unlike adaptive fuel values this table is not reset when programming. If you don't zero it out it can reduce the amount of actual knock you see.
Your bike only has one table, some have two.
Reason I ask is unlike adaptive fuel values this table is not reset when programming. If you don't zero it out it can reduce the amount of actual knock you see.
Your bike only has one table, some have two.
I looked into this and can not find an option to clear the knock counts.. I couldn't even find a stored value file.. I don't believe the PV2-b is capable of even storing it..
I do have an Adaptive knock retard table but it also says that "learned values will be reduced towards zero after each key on cycle. This gradually clears out to learned knock value to adapt changes in conditions".
maybe I'm missing something here but are you saying that I should set this table to 0.00 across the board?
here's what I have mine set at..
Last edited by 98hotrodfatboy; Apr 30, 2026 at 04:49 PM.
Yes, zero while tuning. Two tables that don't get zeroed out are your AE and DE which lots of people do. Learned values will be reduced towards zero, as long as it hasn't pinged. I believe it's 50 key cycles to clear.
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