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Log style manifold while not the best performer - should only cost a few hundred to make or have made
rebuild turbo - under 300, under 400 new for a T3 or under 500 for a t3/t4 hybrid.
oil lines and tap for oil supply - use braided lines and tap into oil pressure sender/oil filter relocator block. As for oil to pan - you have to tap pan - about 200 for everything. Of course you have to pull oil pan - nice time to add a crank scrapper and free up some power.
As for timing - custom chip is one option, others are MSD or similar boost timing controls.
You could for a little more money do a stand alone oil delivery system - using a electric oil pump - small tank and cooler. Talk about easy to do and no changes to engine block or oil system and no sharing heat between engine and turbo oil.
You can use a boost referenced fuel pump to increase fuel pressure under boost typical is 8:1 or 10:1 ratios increasing fuel pressure 8lbs or 10lbs per 1 psi.
Toss in a single or dual extra injectors depending on boost level and you are done.
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