D.I.Y Adding a Return fuel line

[easymovet]

What kind of HP range will you start to need a return? (i'm installing a MPx90 + intercooler, 1000cc, DW65 pump). If i do a fuel return I'll probably buy the AJP kit. Thanks for the awesome DIY!

[Rbsjnh]

This is way better than a kit. I suggest running a -8 an feed and use the factory hard line as return.

[Si Speed 317]

What kind of HP range will you start to need a return? (i'm installing a MPx90 + intercooler, 1000cc, DW65 pump). If i do a fuel return I'll probably buy the AJP kit. Thanks for the awesome DIY!

Typically, you're limited at low to mid 400whp without a return with 1000cc injectors. That's what I've been told of the turbo guys. Rotrex may be different, but I'm not sure.

This is way better than a kit. I suggest running a -8 an feed and use the factory hard line as return.

Why? Easier?

[easymovet]

Typically, you're limited at low to mid 400whp without a return with 1000cc injectors. That's what I've been told of the turbo guys. Rotrex may be different, but I'm not sure.

That HP range is probably true for turbo but the equivalent PSI range on a SC is probably more like 350whp. I think it's the pressure differential at the injectors (between the intake and the fuel line) that becomes the issue. Blurg I really don't want to drop another $600 but it's less that blowing the engine from a lean condition.

[Spaz]

This is way better than a kit. I suggest running a -8 an feed and use the factory hard line as return.

I don't suggest this at all... it defeats the purpose of the return line being the feed is so small. By running a larger return line you, for lack of better words, complete the fuel system loop... if you are going to pump a LOT of gas to the injectors using a -8an line feed you need to equally be able to return the flow of unused gas back with at least a -6an or else you'll just back up the pressure and defeat the purpose of your return line fuel system. Using a better return line will help relieve pressure from your fuel pump, keep more gas to it, and decrease injector duty cycle

[Rbsjnh]

Spaz, I am not suggesting using the -8an for the return, Im suggesting using the factory -6 an for the return