There are certainly a lot of benefits to having piston oil squirters / jets, which came stock on the turbo 6G72 DOHC engines. They help cool the stock cast piston and most likely help with wrist pin and cylinder bore life.
The downside is the 2 center main journals already feed 4 rods and themselves and we are also asking them to feed 4 jets that are in theory closed below 30 PSI.
The issue to me, personally, is that its impossible to tell what the localized flow/pressure is in the oil system at those 2 center mains and they almost always seem to be worn worse than the outside too.
There are some steps that could be taken to help equalize this flow, such as restrictors on the outside 2 main bearing journal feeds or boring out the center two feeds, but those are outside the scope of this post.
Since we have forged pistons in the Stealth shop car, we are going to eliminate the oil squirters in order to save more of our oil flow for the bearings.
There is obviously more than one way to do this (you could weld shut the squiters for instance), but we felt really comfortable doing it this way. Its cheap and easy and requires no special parts.
You will need to have your crankshaft removed for this operation, so your best bet is to do this while you are doing other work.
It is critical to cover your main bearing journal feeds with some tape as this is going to create some shavings. Be careful and clean your engine carefully when done.