2004-2007 Cadillac CTS-V Performance Mods Discussion, Dual fuel pumps in Cadillac CTS-V Series Forum - 2004 - 2007; While building my second motor I thought I would build the fuel system to handle the twin turbos at some ...
While building my second motor I thought I would build the fuel system to handle the twin turbos at some higher boost levels. My previous set up ran 6 psi of boost, stock fuel pump and a Magnavolt. The idea of relying on a fuel pump booster had me nervous. The route I took this time was two Walbro 255 HP pumps. The first one is the Racetronix FP008 made for the V with a hot wire kit for wiring. Which I was disappointed in because it is just a GSS342 with the pressure hose pre-installed on it. The fuel sock was a universal one that I couldn't use, so I had to reuse the original sock (no big deal, only had 22K miles on the car). The second pump is a GSS342 pump mounted to the second sending unit with a small bracket that I fabbed up. I will wire this pump to a hobbs switch set to about 2 psi, so this pump will run only while under boost condtions.
I know someone on here has done this before, but had to send their tank out to have it modified and it was expensive.
Total cost (not including my labor) was $357.XX for parts and shipping from Racetronix. Probably another $100-$130 for braided line, fittings and misc.