William Jennings

Hi all so I have a question for the gear heads. I have an 09 suburban lt with the 5.3 flex fuel engine. I also have a lsa supercharger with all the adapters to mount it on the engine. My question is fueling it. It doesn't look like this model has return line coming off of the fuel rails and neither does the lsa rails. How would yall fuel this system? Thanks in advance!

tech2

post a link to the kit you have.

the factory system is returnless. It only pumps the fuel it needs so no return is required. I assume the lsa rail is the same and the new pcm flash and bigger injectors will flow the required fuel using the returnless system.

tech2

welcome to the world of boost...its awesome.

William Jennings

Its the brian tooley kit im hoping to get around 450 500 at the ground.

Any fuel pump you recommend?

tech2

Why are you changing the pump?
-does lsa request a fp ump change to meet a higher volume?
-something wrong with the current pump?

I can say i don't like carter...not due to the pump but due to the confusing wiring connector information that comes with the pump.

William Jennings

Nothing is wrong with my current pump I am just covering my basis on as many aspects as I can. You think the stock pump would be fine to run in the neighborhood of 10ish lbs?

tech2

that is best answered by lsa.
pretty sure my comp g with the factory 10 psi supercharger had a 2 stage fuel pump from factory. The best answer will come from the manufacturer.

William Jennings

Gotcha thanks for your help!