(10-08-2019 )DDlighttruck Wrote: (10-08-2019 )Chamberpains Wrote: When pulling hills, its more important to keep your RPMs up. So keeping boost down at 10 isn't gonna happen.
When you down shift, you should see a spike in boost to somewhere a little over 20 psi. Then it's up to you to do the dance of pulling the hill and yet trying to keep boost as low as possible. I can keep mine under 15 pretty quick after the initial downshift spike. But it takes some serious discipline. And I downshift a lot till i find the gear that keeps my RPMs above 1500 and gets my boost at around 15 psi. I also monitor my tps reading and I can now say I can pull every mountain in the states by using no more than 60 tps or 3/5ths of the pedal and never pushing it any further. This is done with full 80000# gross using a Cummins cm870 450hp Uni-tune, 10 speed, 3.55 rears. I actually have very little need to use more throttle pedal. Except on the occasional short on ramp in heavy traffic. My fuel mileage is in the mid 7's and im just now starting to see 8's after I replaced my transmission and exploded pilot bearing.
I’m a relatively new driver, but I’m used to the “hurry up and deliver so you can turn around and grab the next one” type trucking, or the “leave on Thursday and deliver 1000 miles away Friday morning” type of trucking
I pulled a 715 mile day a couple weeks ago limited to 62 mph (by my choice). So it’s still doable to make miles, it just takes keeping the left door shut.
I swear dispatch thinks I can pull triple digits which is another subject altogether
I’ll keep working on it, thank you.
There is no magic number ,at least not for me .
Some days I win,some days is a huge lose .
Depends on wind ,hills and 100 other things .
What I look at is if I can save .5 or 1 maybe more it's always a win .
Believe me there are days where I can run full power and never hit 65 or 60 mph .
Plain and simple do what you can when you can ....
I am really liking the star car .
She's a heavy duty girl but only 1000 lbs heavier then the 9900 .
Although to be far I really liked my old donky (9900) .
If ever truck I had did as well as that one I would be really happy .
