Evo X upgrades

[Murlo26]

Yuck!

So is the second pump just turning on and off there? Maybe try lowering the on point of the second pump or something? But I doubt that is it, since the second pump shouldn't turn on until you hit boost right? There isn't a boost leak on that line to the blaqbox is there?

[mlomker]

Originally Posted by Murlo26

But I doubt that is it, since the second pump shouldn't turn on until you hit boost right?

The second pump should be off within one second of the car dropping below the boost thresh-hold. This is the primary 255 misbehaving, for whatever reason.

It could still be a backflow issue or something with the suction/return line but it seems less probable than a bad Walbro.

[Murlo26]

Originally Posted by mlomker

The second pump should be off within one second of the car dropping below the boost thresh-hold. This is the primary 255 misbehaving, for whatever reason.

It could still be a backflow issue or something with the suction/return line but it seems less probable than a bad Walbro.

I see...nevermind on the leak, that wouldn't turn it on in vacuum still.

Yea I wonder if the return is goofed up...you could have shane pull my wally out of my car and test it that way if you want. Unless he has one there.

Let me know.

Or you could drop in my blaqops setup and try that if you want. Not sure how much actual work that would be but worth a try.

[mlomker]

Originally Posted by Murlo26

Or you could drop in my blaqops setup and try that if you want. Not sure how much actual work that would be but worth a try.

Very generous Dave, thanks. I'm waiting to hear if Shane has a GSS342 on hand. If not then I'll make a couple calls. They are common enough.

[Murlo26]

Originally Posted by mlomker

Very generous Dave, thanks. I'm waiting to hear if Shane has a GSS342 on hand. If not then I'll make a couple calls. They are common enough.

Not like I am going to be using mine anytime soon, lol. Not a problem, the car is already up there too

If the pump didn't work and the fuel assembly was the culprit i would say it would be worth a try to swap in my setup quick for testing...maybe not quick but before you spend another 500 on another double pump setup.