Compression Ignition Addict
Join Date: Dec 2011
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If you reallllly want to get into it. blue99stroker is absolutely correct. First I would start with checking your system is working completely 100%. There are no issues, no fuel in coolant, oil in coolant, leaks, anything. Your fuel pressure is right, boost is on point, make sure everything is 100%.
I'd then start with cleaning out your EBPV, then I would start using Diesel Kleen to clean out your injectors. I put a splash (3 - 4 ounces) in every tank, which your supposed to put more, but I just want it to clean the injectors. Once you're batting 1000, and you've cleaned up the EBPV and injectors, then start with intake, then exhaust, then gauges, then chip. Chip is always the last.
Drive the hell out of it with the chip in for a week, so you can get back to granny mode, then start recalculating MPGs. I'm using Fuelly. It's free and it's easy. She's not doing too hot lately ~13 - 15 mpg. You also have to account for the difference in speed/mileage because of your tires. I'm off by 9%, as I've calculated it. So when I'm showing 12.5mpg I'm actually getting 13.8mpg. Which isn't that bad, but can be improved.
You can also think about getting a non-EBPV pedestal for your turbo, removing the EBPV completely. You can look into water-meth injection - which is what I will be doing after I've got my chip in. Finally, you're going to want to look into a bigger set of injectors and bigger turbo. But that's all long distance plans. I want my truck to have 400 hp and 800 ft-lb of torque and get 21 mpg on the highway.