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I would check to see what the valve springs, mainly the exhaust springs are rated for. The 250 was never speced to have an exhaust brake. There is a lot of back pressure caused by closing the vanes, which creates the back pressure to slow down the motor. On the 5.9 cummins, you need to add...

Looking at the Holset manual, its a VGT turbo. A lot of electronics are needed to properly run it. I would check the size and compare it to a HT3B, HT4B and HT60. That would give you an idea of spool. If the turbo is left in the wide open position, it acts like a normal, fixed vane turbo, so...

If you ever want to upgrade, I can get another one. PM me if your interested.

Its the painted black one, with the 4 inch inlets on the intercooler. Its the same one Adam Gates has.

A few little things made you think the injectors leave something to be desired. Such as running 1100 egt on an empty truck while cruising down the highway, smoke on idle all the time, hitting 1300 egt when loaded. Yes it could be some pump tuning, but that is stock as well and my engine has a...

My injector comment was more about the OEM nozzles and how they are not optimal in stock form, then compounded with more fuel and boost, thus higher cylinder pressures and you have more unnecessary heat. It would be nice to figure out the best spray angle and hole arrangement for our pistons...

What injectors did you go with? I will be adding an intercooler soon and want to see what else can be done. I heard the pump will flow enough for 400hp but the injectors have a bad spray pattern, so even when you throw more fuel at it, the spray pattern is outside the bowl of the cylinders and...

I agree with your thoughts on the manufactures. I am interested in hearing real world experiences using different turbos on the 8.3 Im familiar with Dodge Ram pickups with the holset turbos but that is a different ball game, -EX much more fuel available and tuning. We are limited with fuel on...

Anything ever come of this? The specs make it look to be a S366. Should spool quick on an 8.3 and be good for 500hp.