Originally Posted by The Q

...I was wondering if anyone could suggest where I should start at with the Speedometer Calibration value to get it back in line....

Originally Posted by stailjim61

So explain to us exactly what you have been doing. From step 1 to step X. How have you been making changes to BOTH tables? Start from the minute you fire up the bike, how you identified the knock, at exactly which temp, what change you made to table X and what change you made to table Y. Tell us what the air temp was (how did you determine this), tell us what the engine temp was (how did you determine this), tell us how you determined it was temp related and the exact change you made. How did you determine the knock was from air temp versus engine temp? Was it from both? Did you make changes to both tables? Why? Why not? One liners don't tell us much. So please, explain exactly what you have been doing...and just as important....why. You said..."So, on my FLHTC, I use the Adjust By Air Temp and Adjust by Head Temp". I, as I'm sure others as well, want to hear the entire story. You walked into this one dude....step up to plate. Tell us your secret.....no guessing either, lol.

Originally Posted by wurk_truk

Wrong answer to the question for sure. Lemme look and I will give the correct answer. Here's the deal, so you know. It IS best to tune in spring and fall. Nothing wrong with Summer tuning, but this will work backwards.

In the cooler months, and engine can use more timing and one gets to enjoy a bit more pep and the engine LIKES that timing.

When the weather heats up, it becomes too much timing, the engine pings. One would THINK... go pull timing back out... THAT will screw the tune for two seasons if one does that. Instead, there is a Spark Temp Correction table somewhere. It will look like a spark table but have a bunch of zeros and a few negative numbers the closer to the bottom and right side. The upside axis will be in degrees of temp. Upper is lower outside temp, lower is high outside temp.

Most NEVER fool with this table as it usually is decent or folks shouldn't change crap they don't know about, but here's the deal.

At higher temps (lower on the chart) and more to the left (Higher MAP or AFR)... those negative numbers say to the ECM how much timing to pull out of the ambient temp is such-and-such.

Tune when it is cool. Then in summer, if it pings, go chase that ping down. Say... you find it pinging at 3500rpms and 60 MAP. See how MUCH it is pulling timing wise when you find it, too. Then, instead of going to the spark tables and start removing timing, go to spark tables and increase that negative number around your 3500/60 by like a degree of timing. Work THAT until it quits pinging and then summer AND spring/fall the timing will be in a way better spot than having quick retard or learned timing pulling a whole bunch of timing.

Besides the obvious on summer/ spring timing... the temp table works better when really hot because timing can end up being a bitch. The ECM will pull some fast retard... it doesn't go away, so then it starts keeping the timing pull in learned timing. Once the timing IS pulled, now the engine will run hotter and hotter because TOO much timing is being pulled. Fast retards job is to pull WAY more timing than needed to protect the engine, NOT to make it run correctly.

I will now go try to find that table in PV.

Originally Posted by stailjim61

It sounds like you're guessing. Most of us know how temperature affects detonation. Most of us know that we want to affect timing changes based on heat and temps. Most of us know we don't want to pull timing across the board when a ping is HEAT related. Most of know what you just repeated from another source. What we want to know is what the 3 tables DynoJet gave us mean. How does each relate to temp specific criteria? When would one table be used versus another. How would changes be made to one table? Why we should NOT make changes to one table and MAKE changes to another table on a temp related knock. It doesn't sound like you have much experience with the PV. And that's ok. But the last thing we need is guessing.

Originally Posted by neon65

I installed it on my laptop which has the windows 7 64 bit system. The winPV runs on it but will not display all the info for the tunes even after running 'update tune using PV' in the drop down menu.