MK3Design

iTrader: (3)

Ive been building my 16g kit by following along other similar threads. And now I am done! Or so I thought. I have Impreza 2.5 injectors (280cc, not much bigger from our 240cc, but they were free from my old car ), walbro 255lph, and a FMU.

But it turns out the 2006 models are returnless, so I cant use a FMU. I am all ready to install my kit, I just need to figure out this issue, budget is now down to a remaining $300..

My friend said it wouldnt be hard to make a return line so I could install the FMU, he didnt give much info on that though? Can it be done, if so what parts?

Thanks guys

ambystom01

iTrader: (7)

Could buy the parts from an older lancer or go with an aftermarket piggyback ECU.

MK3Design

iTrader: (3)

I don't have any experience with piggybacks, I'm sure I could install one, are they fairly easy to use? (and whats everyones favorite?)

ambystom01

iTrader: (7)

If you don't know what you're doing, hire someone who does.

lncrphish

iTrader: (15)

I was under the impresion that you had to use a piggy back if you used bigger injectors like wrx. im not sure if they are the same as impreza ones. What about ecu flash? I was going to use wrx injectors for my build but was told they were to big to use with just fmu.

ambystom01

iTrader: (7)

If you use bigger injectors, you need a way to retune the fuel map.

MK3Design

iTrader: (3)

Well, I just got a laptop. Has anyone tuned there turbo lancer with ECU Flash?

drucea

iTrader: (14)

For a return system, I had this question too, go to a junk yard and get an 02-03 lancer intake manifold, fuel rail, return line, and fuel pump. Does anyone know if the 02-03 ecu has any part in this or does the fuel just return on it's own from pressure, or what?

lancer2show

iTrader: (11)

i wonder if the gm maft works on the lancer.

lancerSE06

To make it a return fuel system all you need is the 02-03 fuel rail and reg. fuel line can't how i used and i used a copper 90. i also have a walbro 255 that i have wired to a toggle switch from the battery.

MK3Design

iTrader: (3)

So would I be fine with my walbro 255, 280cc injectors and tune on ECU flash. My wastegate is 7.8psi btw