Fuel Pump and Injectors?

[xtreme 2]

Awesome, will work on coming up with a bolt-on kit for an Adjustable Fuel Pressure Regulator.

Do you know if it is -8AN or something else?

[aveodude]

The schrader valve? It is the same size as a tire valve stem. So a -8 should be more than enough. You can put one together for about $250. The FPR is the most expensive part.

[xiaogary]

I had put in a Walbro 255liter/min Fuel pump into my aveo. Direct replacement for our fuel pump. Except that the fuel hose is a bit tricky. The OEM is using those white plastic hard material which you heat to contract it to fit in, followed by a metallic clip. Not those black rubber elastic tube and clip which you can easily take on and off.

There is 2 holes leading to the top of the fuel tank under the rear passenger seat. One is a return line which goes to a fixed value fuel regulator. Whats the value I do not know. You will need to drill thru this regulator to ensure it does not limit your new fuel regulator pressure when set at higher setting then this default one. I left the OEM regulator there but its a dummy once drilled thru. The reason of leaving it in there is so that I can make use of the OEM fuel tubings which is a tricky part to take on/off.

From the fuel tank, the fuel pump pumps out the fuel to a T-junction under the tank near the rear right wheel. From there, one passed a fuel filter and back into the fuel tank via the 2nd hole which is the fuel regulator. The other T-junction end goes to the front fuel rail. Meaning the return is not at the front, the return is all the way at the back.

I have since added another SARD fuel regulator in front before the injectors externally set at 27.5. And from there, return a tube to the T-junction under the car, replacing the original return.

Hope this info helps.

[xtreme 2]

Wow that's a strange set-up...

Maybe I'll make an ultimate fuel kit that is bolt-on to replace all that... include a walbro, just lines, and AFPR, and the -8AN fittings to attach it to the Fuel Rail...

[xiaogary]

Yah, the oem fuel regulator set up is rather strange. See no return in front at the engine bay at the fuel rail, yet saw a return ath the fuel tank. Then discovered the return is mid way.

Normally the regulator and return is after the 4 injector in front at the end of fuel rail.

[boxkiller]

anyone heard of megasquirt being used on an aveo yet? maybe some of the guys in malaysia or south america??

[xtreme 2]

working on it... Bulk Buy in the announcements section...