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Ok faithful, I working out the tweaks, on these new motors (cummins 4bt's on my 28 FBC) I have installed manual 0-30 PSI pressure gauges in the plug fittings on my intake manifold. I used a pressure boot over the turbo intake and pressurized the intake to 10-15 psi with the motor off and corrected a couple of small leaks around the intake plumbing. The gauges work good. When running the boat at 2000-2300 rpms the boost is only about 2 psi.

Is this right? I only have one EGT's gauge (so far) post turbo and its reading 1000-1150 degrees. It just seems the turbos are doing much.

Does anyone have any experience with this?

Thanks.

never never exceed 900 degrees at tubo output plug!!! look for 20 lbs at cruise