North Liberty and South Bend, Indiana | On a rather long HARD pull uphill tonight I lugged the crop out of it at 1400 rpm. Max 20 psi and it never hit 900 on the pyrometer. I can only assume pyro is correct. Sure seems like it is not getting enough fuel or I am not getting enough boost. I would venture to guess this 475 Cat would not walk away from the old 350 Big Cam as it is right now. It just does not impress me on the tough spots on a route I've taken 100 times and know very well. If this is as good as a 475 Cat gets they aren't anywhere near wh as t everyone says. I did adapt to the low rpm band, low range shifts are below 1500 and high range is below 1600. But I have tried to run her out just because and over 1600 there is nothing left. It falls on its knees.
So I may be expecting too much or there may be a legit issue. Hoping there is an issue because I was looking forward to having all that hard pulling torque these Cats supposedly have. The misfire or backfire or pops through the exhaust when reed over 1700 are kinda making me scratch my head. First thought on those were electronic governor causing it but when I hit 67 mph and the speed governor kicked in it just shut off. No exhaust notes. As soon as I hear what shop says I'll report back
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6nz owners
