Rich stumble w/ BOV recirced.
 

Most of you know my talon is pretty well tweaked up and runs like a raped ape, i have a SSQV BOV recirced, at lighter throttle when i back out easy and the BOV opens i get a rich stumble just for a sec then it clears out. Its like it compensates too much fuel. Almost as bad as venting[&:]
When i shift at WOT, 1-2 shift dont do it usually, 2-3, 3-4, and 4-5 shift when racing, raisin hell , whatever at WOT, right when i get back on the throttle it backfires loud as hell and people are telling me theres a flame at least 2 feet long coming out of the muffler. Now it does have a small exhaust leak where the downpipe meets the o2 housing and i know that will help cause backfire, but mainly its because its so excessively rich when the BOV opens. Is there anything i should try?
I got my fuel trims to where it runs awsome other than normal driving, say you pull 3rd gear up at 1/2 throttle or lessto 3500 and ease out of the throttle to stay at a steady speed it will buck a few times when the BOV opens. Its not overly rich on light acceleration so i dunno. WOT is bad fast but normal driving is a bit annoying like that.
Maybe from large injectors and the SAFC is all in the negative range to get it right the BOV compensation will dump too muchfuel now because the SAFC cant reduce that? Thats my guess.
TIA to any input or tips.

RE: Rich stumble w/ BOV recirced.
 

My car does that sometimes I also have a SSQ recirced. I think it is a small boost leak on my car. I already did the TB shaft seals which are a known probelm in the Evo and DSMs they were leaking. I almost wonder though if the BOV needs to be adjusted tighter or something

RE: Rich stumble w/ BOV recirced.
 

Could be, maybe ill try it & see what it does. I have mine adjusted to where it starts to leak at about 32-33 psi since i run just under 30.

RE: Rich stumble w/ BOV recirced.
 

maybe you a running just a wee bit too rich and could take it down like 5% and then see what happens?

RE: Rich stumble w/ BOV recirced.
 

i tried that already, lol. It helps but then it gets too lean to where it wants to miss when holding it steady.
Maybe i should set my low / high points farther apart, maybe take the high point to 90-95% instead of 80 so it stays farther away from the richer high settings. This thing is really picky, 1% change is noticeable.

RE: Rich stumble w/ BOV recirced.
 

wow, that is some shyte!! well, hope ya get yer answer!

RE: Rich stumble w/ BOV recirced.
 

If this thing had 8 cyinders and a carbureter i could tune it no problem.[&:]