Re: Questions
Do a tune-up , its extremely important on these trucks. You never know what the prev owner used, so its good to replace with the correct plugs, wires, cap/rotor.
Change fluids out, Dex III in the trans, same for transfer case. Put in a 160 thermostat. Hotwire the IC pump. Get laptop and buy datamaster and see how it runs. Put a walbro fuel pump in and an AFPR. Then if you have zero knock you can move forward with whatever mods you want to work towards your goal. You can stick with the stock turbo or upgrade to a Precision Turbo kit which includes the downpipe. You should be able to run 12's on a stock turbo, so thats up to you.
Also, its a good idea to check to see if any aftermarket chip was installed. The ecm is tucked up under the passenger side dash. You'll have to remove some of the plastic trim interior pieces to get at it.
Its best to find any existing problems that might have been left unaddressed by the previous owner, then once its running good start with your choice of mods.
If you have other questions, click on the pic in my sig and check out my website and email or call.