I was worried that running three Denso 1020s in a surge tank would overwhelm my Magnafuel regulator. I finally have the install to the point that I test ran the pumps today. I think it should be OK. With the engine off, the stock in tank pump runs at 58 psi. With all four pumps jumped out, pressure rises to 62 psi. I am using a 3/8" return line. Since the pressure rises, I assume the regulator is at its limit. The pumps in the surge tank will only come on when the blower's bypass closes. I also assume that when the engine is running and in boost and using the most fuel, the regulator should not be overwhelmed. Comments, please.

 

I think your return line may be over tasked that's why the pressure is rising.

 

I didn't think that 3/8 might be too small, but regardless, do you think it will be ok when the engine is using its maximum amount of fuel, as opposed to my test with the engine not running and 100% of the fuel being bypassed?

 

The surge tank pumps will never run in anything ​but WOT situations.

 

Oh ok. Ya at wo I would think it would be ok. What do those pumps flow in that config?

 

How the heck should I know? Wouldn't it be what one 1020 flows x three?

 

So like 1500 l/min?

 

Plus the flow of the stock intank pump?

 

Question also is what does a 3/8 flow at zero pressure. Any back pressure is going to effect your regulated pressure.

You mean LPH. LPM would be a **** load of fuel.

Why 3? You aren't using anywhere close to 1500lph

 

i would calculate out your fueling needs and what configuration it would take to get to what you need.

if your regulator is not working as intended going to be chasing your tail with tuning especially during wot.