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Get just recently got P0451 as well. I am on Vortech.
Just Replaced my Engine with a used, 8k motor after mine blew.
I returned to my perrin Vortech tune (my custom tune supposedly killed my engine).
One thing i noticed is the tuner gave me a 3bar map sensor, when the perrin kit originally came with a 2.5bar. So, i'm running a 3 bar on a tune made for a 2.5 bar - wonder if that has anything to do with it (yes i realize the implications of that in general, a 2.5 is on the way)
I never had this code on my original engine / vortech setup. Nothing else has changed as far as hardware.
I do have Radium dual catch cans, but i had those before, and i've verified the connections to PCV and Crank Vent.
Any ideas?
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