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