madmikeismad
So mad
- Joined
- Dec 19, 2009
- Messages
- 14,347
Finally got a "break in" yesterday. I already had about 80 miles on the engine, out of necessity, before I was able to get the trailer hooked up to it. Got 12mpg with those 80 miles, I'd like to think because I was doing my best to keep it loaded whenever I could.
I also learned that the gt4202 will do 50 psi, so I think I need to open the gate a little on it. Thats with 80 psi total, so either I'm somehow way over driving the primary, or theres a boost leak after the secondary, right?
Gross empty trailer - 12k
112 miles traveled - 65 mph with cruise control most of the way
12mpg
950 avg EGT's/10psi, 1300 max/20psi up the "steeper" interstate hills
Gross loaded trailer - 17k
100 miles traveled - 65 mph with cruise control most of the way - different return route with some steep hills
10mpg
1000 avg EGT's/15psi, 1200 max/35psi up some very steep hills
Not a huge load, but I figured it was enough once I got up into the hills. I'm incredibly happy with the EGT's. Mileage, not so much. I'm seriously thinking about going back to 3.55's. I'm just afraid that it's going to really bog it down off the line with a loaded trailer and increase egt's.
I also learned that the gt4202 will do 50 psi, so I think I need to open the gate a little on it. Thats with 80 psi total, so either I'm somehow way over driving the primary, or theres a boost leak after the secondary, right?
Gross empty trailer - 12k
112 miles traveled - 65 mph with cruise control most of the way
12mpg
950 avg EGT's/10psi, 1300 max/20psi up the "steeper" interstate hills
Gross loaded trailer - 17k
100 miles traveled - 65 mph with cruise control most of the way - different return route with some steep hills
10mpg
1000 avg EGT's/15psi, 1200 max/35psi up some very steep hills
Not a huge load, but I figured it was enough once I got up into the hills. I'm incredibly happy with the EGT's. Mileage, not so much. I'm seriously thinking about going back to 3.55's. I'm just afraid that it's going to really bog it down off the line with a loaded trailer and increase egt's.
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