Evo_Goodness

So long story short my stock evo 8 fuel pump died like bogging like crazy and humming like a church choir girl so i got myself a DW200 now my STFT are sitting at -20%ish after 20 min of idle where as it used to be at 2ish% either direction of 0.
So i am not sure what to adjust to get it or where to go maf scaling or injector battery voltage latency i have stock evo 8 injectors. If i understand this right it's going pig rich but my i am logging 14.8/15.1 ish on my wide band and it seems to idle fine my low LTFT are sitting at hovering right at 9% while idle anyone point me in the right direction.

Maybe i should reset my ecu clear it by pulling the neg battery?

Evo_Goodness

So I think resetting the ecu did it it's now been idling for 15 minutes and I am sitting right at 0 bouncing a point in either direction same with my low ltft is sitting at 2.2 I'll be driving it tomorrow after I straighten up my tune now that I don't have to max out my fuel map for WOT I'll report back then

3SgteGuru

iTrader: (3)

sounds Like maybe there was a return line restriction. The DW200 should flow more than the stock return line can handle though.

I drilled my Rail out a few drill sizes and my Return venturi just a tad. This helped my idle STFT, on a Walboro 255lph.

So the stock Return venturi makes a little bit of a restriction on a 255lph at idle. One the IPW is somewhat higher and not all the fuel is being sent back to the tanks the 1/4" return line isn't an issue.

Evo_Goodness

Are you saying I should drill it out or my Return line should be fine with the DW200 I know the DW200 can flow a little more then the walbro 255 from what I have read but can find 100% concrete evidence on this I figured they are pretty much equal

3SgteGuru

iTrader: (3)

drill the return line venturi just a little.

Evo_Goodness

It actually sorted itself out after pulling the neg battery i did bunches of logging the last couple days they are all within 2% from 0 so ill just leave good enough alone lol

3SgteGuru

iTrader: (3)

gotta love it when stuff sorts itself out, that usually means it gonna come back at the worst possible time lol.

Evo_Goodness

Yes very true I have logged it each day no way out of whack yet