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Message: [QUOTE="WhiteMamba_Scorpion, post: 1463310, member: 13725"] Since you brought up fuel temp... not sure if this is the place but since it's somewhat related me and Cody (6slow) did a little testing last summer. Now this is somewhat unscientific since we weren't taking temp of the fuel itself but instead using a temp gun to shoot different parts of the fuel system for a comparison and obtain a delta. This was the same time I installed a copy of Codys fuel cooler setup. This is a H&S duel fueler & lpfp. Was a 90 degree day and truck had been sitting in an enclosed garage all day. No auxiliary fuel cooler at this time. Before start up. Secondary Filter on firewall- 96 Secondary CNC Adapter - 101 Plastic Tank - 83 Water sep - 86 After 45min highway 1/4 tank. Filter - 134 Adapter - 125 Tank - 106 Water Sep - 133 Same drive. Full tank Filter - 120 Adapter - 118 Tank - 100 Water sep- 115 Now I realize this isn't the actual fuel temp going through the pump but it gives you an idea how hot just the metal adapters and filters get. Also shows the difference just a fuel tank of fuel makes temp wise. After the fuel cooler install I saw a consistent 20-30 degree drop in the temps listed above shooting the same spots. I don't have the setup compared to a stock pump but I can assume with a high certainty that a stock pump would run hotter due to the smaller size And volume. This would be backed up by Mikes observation of getting fuel pressure codes with a stock pump And the installation of the H&S alleviating the issue. And yes its highly recommended to never go below 1/4 tank as already mentioned. Proper setup, maintenance, and even additional cooling like Cody and I have done would keep a twin setup with H&S lpfp very reliable. I don't think twice about beating on my truck or going on 8 hour road trips with it. The fuel cooler install is super easy and cheap if you're interested I can PM you part numbers and pieces needed.[ATTACH=full]172069[/ATTACH] Sent from my SM-G930V using Tapatalk [/QUOTE]