Q777 Supercharged Cobra - Bosch Motorsport fuel system

Running lean was never an option.

So many different opinions about fuel pump requirements...

I REALLY didn't want to lean my motor out on the dyno, but I didn't want to spend hundreds of dollars unnecessarily on extra fuel pumps that really weren't needed. I took my entire fuel system with me to the Superflow engine dyno to be absolutely sure how well my fuel system was working. Here's what I have :

Triangle Engineering 70 litre alloy fuel cell.
#8 braided line to low pressure Carter 100gph lift pump
#8 filter to stainless 2.5 litre swirl pot
2 x #10 stainless lines to 2 x Bosch 044 Motorsport pumps
Check valves to 2 x #6 lines
Custom stainless Y block
1/2" stainless solid line to engine bay
Y-Block to 2 x #6 braided lines
2 x 1/2" Jumbo fuel rails
Bosch motorsport dual inlet rising rate regulator
MSD 96 lb/hr injectors
3/8" stainless solid return line into swirl pot
#6 overflow from swirl pot to fuel cell

I have the Motec controlling the second Bosch pump. At idle and in normal driving conditions, running both pumps only succeeds in circulating excessive volumes of fuel. This does nothing but heat up the fuel. The Motec refers to engine rpm, boost pressure and throttle position and determines when to activate the second pump. As both pumps are fitted with the Bosch one-way check valve, no fuel pressure or volume is lost through this method.

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