X15 down on fuel economy recently?

[marek4792]

Got a bit to report, so I needed exhaust manifold gaskets #2 had a cold leak and #5 was blown out, but was just out of view enough not to see until the manifold was removed, slip joint rings were also swapped they were leaking too.
Also swapped the turbo with a low mileage (less than 25k miles) replacement off of a X15 X134B CPL 5880 rated at 565hp. Mine is a X15 X116B 4343 CPL rated up to 605hp, I'm at 580HP, They both are HE400VG's but the new one has a curved compressor blade compared to my original flat blade.

The turbine blades are the same on both according to Quickserve. Test drove it around the neighborhood with my foot on the brake and it seemed to act similar to the original, although I would like to have expert eyes see live data to determine if the charge air flow will need to be adjusted to prevent any long-term issues. I'll keep you guys posted when I get some hard data.