What is the new and old rpms @60mph? 1)gear chang 2) trans swap?
---port match the ehxsost manafulld on both sides .
Wrap it ... I used the extra thick wrap 1.5 rolls for man +hot side ehxsost...
Exhaust Heat Wrap
And T3 Turbo Blanket
Have the man. hot tanked (to de rust) and 2000°+ ceramic paint.
This dropped my under hood temps to under 200° can stop at the top of a 7mile grade pulling 1000°f EGT(wide open ) pop the hood and hold on to the man. With out 3rd degree burns. The wrap reduced my 1psi point by 100° (from 600° to 500° ) = more efficient turbo. This drop was an across the bord shift.
kafer65. I make the same recommended ehxsost mods for you...
Keep the after cooler. Add a late 1st gen inter cooler/ radiator (early 1st gen too small for intercoolers per dodge/ cummins) put the aftercooler on a separate radiator ( stock is engine coolent180° intake charge =15% reduction in power from un burned fule per Cummings )my late has 15% smaller injectors and the same 160hp /400tq only difference is injectors and IC Vs aftercooler
1st gen cummins 91.5 dodge d250 ,16cm turbo housing exost manafulld wrap, Aero Cap
best tank: distance 649gps mi 24.04 mpg27.011
Best mpg : 29.3mpg
97mi 3.311usg 7/27/16