Quote:
Originally Posted by The_Bishop
True, but the airflow wouldn't be as the butterfly valve would be partially closed. In any case, now you know what to watch for next time around!
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So, I am glad you said that, and I fully agree with you on that. If the blades are not 100% open, there is a slight airflow restriction into the engine. I spent a lot of time reading how TPS, Map, and VE table info works for the sniper, ad while I understand the basics of it, I still have wondered about the butterflies. The more air in, the more fuel can be added and essentially the more volumetric efficiency and cylinder pressure I can make. Most people (my tuner in Texas included) have told me that WOT is WOT on a map system. I still think of it like you are, and that if my blades are not fully open, I am giving up VE. I am glad to be able to datalog and see it, otherwise without that, I would just "assume" I was at full WOT for every pass. The datalogs show that I was only at 100% TPS on pass 1, and pass 2, 3, 5 I had some throttle fluctuation. I probably also did on pass 4, but I didn't record a datalog during it.
-the more I look at the sniper tunes and datalogs, the more I want to get back out to the track and run the car again. I am probably going to type up a separate post/thread about scientifically mathematically figuring out my optimal shift points, so I will be asking for as much group input on that as possible. I know I am splitting hairs here in search of maybe shaving down another tenth of a second or so, but I am hoping for one more good track session before winter comes along.