idahotuner wrote:really? i have seen people make over 450 on 740cc injectors. i thought 810s would give me some playing room. well maybe i will continue my search for top feed injectors. deastch werks has a 300lph fuel pump. that seems like it would enough. but i will look into this bosch.
Kyle, a guy that use to be stationed here, hit 380whp on 740s before he exceeded the duty cycle his tuner felt safe at, so 810s are definitely needed for a reliable 400+ setup imo. As far as the pump goes, the cs one you found for $75 doesn't seem like a bad option. When I chose my fuel system, I decided I didn't want it to be my limiting option.
Edit:
Bart sent me a link a while back where multiple fuel pumps were tested including an aeromotive unit that did quite well. The walbro, on the other hand, did poorly.
Edit 2: Found this little bit of text about the 044:
This is the popular Bosch Motorsports "044" fuel pump, as used by Japanese European & Australian tuner shops, JGTC cars, Touring cars, almost all WRC cars, and many more. Quite possibly, the most popular aftermarket fuel pump. Capable of providing 300 LPH free flow and 200 LPH at 5 bar (or 72.5 psi) for up to 685 BHP. In comparison, the Walbro GSS341 255 "high pressure" fuel pump can support 390 BHP Note: Values calculated at 12V, 3 bar (43.5 psi) base fuel pressure, 2 bar (29 psi) boost pressure, 1:1 fuel pressure regulator ratio. These are inline fuel pumps, we recommend they be installed between the factory (or another aftermarket) in-tank fuel pump, and the fuel rail. These may be installed in the fuel tank, but some custom fabrication will usually be required. In addition, feeding these inline pumps with another pump (in series), will boost the output of the Bosch 044 fuel pump even higher.
M18x1.5 inlet, M12x1.5 outlet