Ok I have read alot on here and I know everyone hates the hahns fpr...Well mine was fine until I changed the fuel filter out it was down on like 25-30. My filter had like a brass Tee or restictor in it and 1 of the ends on it was blocked off, well I couldn't get that back in when I did my filter change so I just took it off. Now my fuel pressure gauge on the craptech is shakin really fast between 100-110 even with the adjuster almost all the way out....I have 40lb accells and between 4000-5000 it just sounds like my plugs are shooting a ak 47 and then it like runs fine from 5000-7000...Has anyone had this problem with the afpr or was there other problems or what to do

Your problem is that you are running 100 psi of fuel.

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2012 2500HD LML

I have the adjuster all the way out it still wont lower the fuel pressure any

either something's wrong w/ your craptech (which I doubt), or you need to recheck your installation of your fuel filter. I'm having a little trouble understanding you

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Outside of Corona: "That sucks, peace out..." (jamie walks away)... "Sweeet, what we doin?" -Zac
Tim's garage (prior to motor install): "Im gonna smoke real quick, that way if you fuck up I am already nicotined up" -Tim

Is there any way to test my regulator. I am gonna put the T looking thing back in on a new filter from Autozone.