towpro wrote:
the thing missed about the exhaust brake is its not support in automatic equiped trucks until the 2006 model year. 2005 requires a box to modify the convertor lockup times, and there might be another device needed to keep trans pressures higher to prevent clutch slippage while exhaust brake in in use with lower RPM's.
Any earlier model Dodge auto doing any towing or hauling really needs a better torque converter and valve body anyway (actually a fully “built” transmission, the stock 47re is weak but can be fixed bulletproof).
Then all you need to control lockup is a switch. I use a headlight dimmer type floor button. There’s no “box” needed.
