Help, E85 evo just wen't lean for no apparent reason??

[xspsi4]

Ok built evo 8 with double pumper e85 set up on a 30r went super lean for no apparent reason and this has me scratching my head as we have replaced fpr with an adjustable unit trying to see if it was a fuel pressure problem which it was not and fuel pumps are working as they should so not sure what exactly to tackle next
We tested the e content which was 89% so good there really the only thing left is the tune? But how could this just go out of wack all of the sudden? It is on Autronic btw but something seemingly changed overnight and I am to say the least at a loss so does anybody here have any insight as to where to look next?

TIA!

[SloRice]

Mine did this too. I replaced everything like you and nothing. Replaced the pumps and all was good again.

[xspsi4]

Ok we have 2 new pumps on stand by so those will be going in asap!

[lqdchkn]

you using a hobs switch? it sould be an easy check. test for switch continuity with the switch under pressure

[xspsi4]

Yea both pumps are working and still lean so I am not sure anymore?

[xspsi4]

It is the BR double pumper set up with less than 1k miles on it so I guess we will look in to the wiring as that is all that is left.

[SLO-EVO]

Your injectors might be clogged with "gunk" as E85 cleans injectors out. Just a guess.

[xspsi4]

Although it is possible the car only has 19k miles on it and everything was brand new less than a thousand miles ago so have they ever clogged that fast? Fic blue max injectors.

[SLO-EVO]

I am only speculating off of what I read. If you use unleaded on one tank and then use E85 this happens.

[Appauldd]

Similar situation happened to me. I believe my issued is due to the lack of fuel from the pumps.