All,

I've been playing around with the data logging feature which is just a phenomenally awesome feature. But, I've come across something with the TP% that has me wondering.

There are one or two spots in the data logging where I can display the TP%. And they do not reflect the same %. One might show 25% and the other 20% while I'm cruising. Now that doesn't bother me so much but what really bothers me is that when I floor it and go full WOT the TP% only reads 86%. One of them read 86% and the other read something lower. This was found in the 91 Tune and the 93 Tune.

So my questions is: Why is this not showing a TP% of 100? The truck only has roughly 14,000 miles on it. The 08's are ETC (drive by wire) so I wonder if the throttle plate isn't opening all of the way. Should it be showing at least in the 9x% range? I don't know whether this is an inaccuracy in the 3865 or a problem with my TB. Anyone play around with this? What is your TP%?

 

I got my answer. With the truck off there is about 3% to 4% TP opening. Now add that to the running TP% and you get about 90%. Close enough.

 

Yeah I was going to mention that, and the fact that with the butterfly open I dont believe its a true 100%. Its more in the range of 90% like you mentioned.