Hey AustinEvo8, you may have very likely checked this already but check ALL of the little vacum lines on the intake manifold, and definitely check your vac lines behind the intake manifold on the driver's side that go to the egr valve, zip tie all of the lines that you can get to, everytime I have this problem it's a new line that I hadn't noticed popped off the intake manifold sometimes. good luck

 

hey, i had a similair problem......car sputtered under partial acceleration but if u nailed it it ran smooth.....turned out to be my boost controller.
good luck

 

sorry to hear of your troubles. i had a similar issue, turned out to be i had some crud like road grime on the the mass air sensor, i cleaned lightly with a towel and my problem went away..

 

hey thanks for the info guys

 

Are you running the walbro pump without a reflash or any fuel control?

 

Coolguy949, I don't know if your question was directed to me, but I do have a Walbro but am running a custom street tune dynoflash for it.

 

No, its directed to AustinEvo8.

The reason I say that is because from my experience just putting the walbro in without any fuel control makes it run extremely rich above 5000 RPM

 

yeah, I agree, I had my Walbro in for about a week before I got Al to retune for it and it ran pig rich above 5000 rpm, at least it seemed to as I didn't have a wideband to verify.

 

did you figure out what the issue was.