Gadgetized

iTrader: (9)

I have an 05 Silverado with a returnless fuel system. I have a Magnacharger that came with the 190lph Walbro pump. I want to upgrade the system to support 500rwhp (along with my meth kit) without starving the engine. I was thinking of going with a 044 Bosch pump and putting it in the tank. Can I run the regulator that is on my Magnacharger, or wont it support the higher flow? Do I have to run a return line? Do I need to use a bigger fuel line, or is the stock line sufficient? Is there another pump that I should get as opposed to the Bosch?

Bluchevypick

iTrader: (65)

You have the right idea at first. You can just install the bosch and should be good.

Gadgetized

iTrader: (9)

So will the stock line work? Should I run the Walbro 190lph (that came with the kit) in the tank to the Bosch in line? Should I run a return line? If I do need a return line, will the regulator on the rail work?

trever1t

iTrader: (14)

the Walbro and Meth will support 500rwhp, well mine did and currently with a magnavolt and 60lb injector i have no fueling issues.

Gadgetized

iTrader: (9)

Trever1, I actually forgot that I bought a magnavolt a few months ago. Too many parts laying around. Actually I think my setup is pretty close to what you were doing when you broke 500 on the hp list. OK, so I will be running the stock pump to the Walbro inline with a magnavolt. I too have 60lbers. Do you know if you had the 190lph, or the 255lph?

trever1t

iTrader: (14)

I have the pump in-tank that came with the M112 unit from Magnuson, I always assumed it was the W255/lph but honestly I do not know for certain. The magnavolt seems to function as it should.

Blown06

iTrader: (32)

You should be able to support 500 rwhp with a single intank 255, 60's and meth pretty easy without having to go through the trouble of converting to return style.

Gadgetized

iTrader: (9)

Thanks for all the input. I will be buying a 255 Walbro and putting it in the tank without a return line.

Gadgetized

iTrader: (9)

Ok, I purchased a Walbro 255, and when I purchased it i was told that I need to run a regulator. I bought an adjustable regulator, and intended putting it on the frame. I pulled the tank yesterday, and when installing the pump was wondering if anyone is using the in-tank filter and regulator that is on a returnless fuel system. Does anyone use this, or do you run a separate regulator and filter?

Gadgetized

iTrader: (9)

Just so everyone knows, I ended up with a Walbro 255 pump, Aeromotive A1000 regulator, and a Magnavolt. Without the meth kit my PSI is going from 58 PSI down to about 41 PSI at 6300 RPM's. I planned on turning it 7k, but I am going to have to make some changes somewhere. I am going to tie the front of the fuel rails together to even out the flow and see if that helps. Any suggestions?