Compression Ignition Addict
Join Date: Nov 2008
Location: Lumberton, TX
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1. As stated before, flush using the procedure listed on here many times before. Replace with any good ELC coolant. This would be a very good time to install a coolant filter at the same time. You will literally be amazed at some of the stuff that thing will catch.
2. Replace the oil cooler; and either delete, or have someone block off the EGR cooler using stainless steel plates, not freeze plugs.
3. Whether you replace the headgaskets and studs is optional. A good rule of thumb would be that if you are going to run with no tuner the original bolts will be fine as long as you do 2 & 3 above. If you are going to run any sort of tuner you will be pushing your luck without replacing with ARPs. I would imagine the stock bolts will eventually give way. One other way to look at it would be that since you have dug deep enough into the engine to replace the cooler, that would be a good time to go ahead and replace the bolts. If you dont and have to replace them in a few months you will be PO'd and it will cost a lot more to have to do it all over again.
4. My personal opinion of the edge is that it's a fine tuner. Just not for a torqshift tranny. Whenever I change tunes on my truck the tranny shifts like crap, sometimes feeling likes it's gonna fall outta the truck, until it learns the new power curve. X3 will probably be what most folks here recommend. If you are using a standard, jump on the edge if you like.
5. Fuel pressure regulator spring. There are a bunch of posts on here with good info. It's less than a $100.00 fix that can save you big bucks down the road on injectors, plus it's a pretty easy do-it-yourself fix.
6. Stay safe over there man and a warm premature welcome home!