Maxville Truck Posted September 11, 2009 Share Posted September 11, 2009 Looking to upgrade the HP in an em7-300 engine in a truck we are building, checked around a bit was told that all i need is different injectors and I can get an upkick in power.... Our local mack service shop said they can change programming within the specs of the engine..(Injectors , turbo) to get a little more. This truck is an MR with an allison hd4560p tranny I will be installing a 3rd drive axle and mounting a 4500 gallon Manure Tank. figure I will gross around 62,000. Would like closer to 400hp. this is the first e-tech I've had and don't have experience with it any advice would be appreciated. Quote Link to comment Share on other sites More sharing options...
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