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Message: [QUOTE="Dieseldan73, post: 1027504, member: 5908"] Honestly, I'm replacing the regulator because at this point I just want to replace the whole system and be done. To make a long story short, I had the stock fuel system and just the regulated return with 155/30 injectors. Last June, I noticed that with my regulated set at 55-60 psi, at WOT it would drop to upper 20's. I replaced my stock HFCM with a used one. No difference, I bought a brand new one. No difference. I then put a sump and an Airdog 150. It helped, but still dropped into the upper 30's. This year, I replpaced all filters again, rebuilt the regulator, bought yet another brand new Ford HFCM and its no different. Its been very fustrating. I have 2 fuel pressure on my CTS. One at the fuel bowl and one at the regulator. The both read within 2 psi of each other and both drop at WOT. Some have said that the Aeromotive isn't diesel rated and the Fuelab is. I don't really think it matters. As far as keeping the Airdog 150, I heard it both ways. Some say I don't need it, others say since the Fuelab will be above the sump level to keep it and keep the strain off the Fuelab. I ordered everything and just need the hoses and fittings. I need to make a bracket to mount all this stuff on. I wish someone sold just a bracket, but I guess I'll just fab one up. [/QUOTE]

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