The difference (to me) is negligible. I made a 200 mile round trip at 26.4 on Saturday and my around town has held steady at 20-21. That's including some WOTS and max boost with one 0-100 mixed in!
It is interesting to me the wide variety in MPG people are experiencing. I noticed at least 3-5 MPG reduction when I tried sport mode for about a quarter of tank. It was a significant decline for me.
I would imagine the mpg hit would be scooting around town and not so much on the highway where the gear hunting would be minimum at best.
I would be surprised if it didn't stay in boost almost all the time - the RPMs in sport mode are considerably higher than in D. For example, when I was just driving down the road at 55-60, the RPMs were 2500-3000 - no high load, just cruising - in D it would have been like 1500 in 10th gear.
I've been monitoring that. My gauge reads -10 vacuum to 30psi boost. Normal cruising in D I'm in mild vacuum (-4 or so) but while in S I hover right at 0 to +1. I notice boost kicking in going uphill vs. a gear shift while in S also.
Just curious, what gauge are you using?
For now I'm using the OBD Fusion Iphone App. I'm currently researching other alternatives.
Same here. After reading this thread, I tried S mode a couple times back and forth to work (60 mph with a few stoplights), and definitely noticed the RPMs well above where they usually are in D. Same sort of 2700 in S vs 1200-1500 in D. I can't stomach losing that much MPG. Especially since I've always been more efficiency oriented in almost everything I do.
I will be boring along with you.
One thing that is not mentioned frequently is the ability to start in 2nd gear in S mode to avoid spinning on snow/ice.
Exactly! D has more than enough get up and go for 99.9% of the things I'm going to do with it.I will be boring along with you.
The truck is still pretty amazing when you stomp the gas in D mode though! It just isn't quite as quick to respond as in Sport mode, but it wakes up and moves!
Now that is an interesting thought. I guess I don't have experience yet with the truck in winter conditions to know if spinning in 1st is a common enough occurrence. If it is, then that is certainly a good reason for us boring folk to use S mode, at least to get moving.
Thanks, never heard of it. Is it not worth getting if you’re looking for something else?
