Split fuel trim with Maggie setup
Melting Slicks
Joined: Mar 2005
Posts: 2,252
Likes: 181
From: NE OH
I'm running a maggie and have the same issues...passenger side lean condition between 2000 and 2300 RPM.
On my engine, it only occurs once the engine is warm. Even in closed look, with a cold-ish engine, it runs fine.
Interested to hear what you guys did to fix the problem.
On my engine, it only occurs once the engine is warm. Even in closed look, with a cold-ish engine, it runs fine.
Interested to hear what you guys did to fix the problem.
Melting Slicks
Joined: Mar 2005
Posts: 2,252
Likes: 181
From: NE OH
Burning Brakes
Joined: Aug 2003
Posts: 1,070
Likes: 9
From: MARRIOTTSVILLE MD
Did you guys know that there is a balance tube available that attaches to the rear of the Maggie fuel rail ? The Maggie fuel rail is already pre-drilled and tapped to handle the addition of the balance tube its a simple bolt on upgrade which may help with your problem.
INTHERED
INTHERED
Racer
Joined: Aug 2000
Posts: 296
Likes: 3
From: Enterprise AL
Cruise-In II Veteran
MIne does it too - bank 2 lean at 1800 to 2100. I've been chasing it for about a year now and think EC tune is right - its some kind of harmonic. And as such, conditions have to be jsut right to set up, so this is why mine and others experience it more pronounced at times, but primarily when warm, but always at +/- 2000 rpm. I have adusted the VE table with my wide band screwed into the right side exhaust, so it reads the lean side. I even tried off set closed loop fueling between the 2 banks which did help a little. Very frustraiting.
Melting Slicks
Joined: Mar 2005
Posts: 2,252
Likes: 181
From: NE OH
Just to mix things up a bit, I'll add this....
My maggie only does this when it is warmed up.
When the motor is cold-ish, the lean spot does not appear....even in closed loop fueling. Once it gets hot, it sticks out like a sore thumb.
My maggie only does this when it is warmed up.
When the motor is cold-ish, the lean spot does not appear....even in closed loop fueling. Once it gets hot, it sticks out like a sore thumb.
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Tech Contributor
Joined: Apr 2007
Posts: 10,924
Likes: 78
From: Forney Texas
You might call Callaway and Magnuson. You should be able to make one with some 90's and braided line. If I remember correctly, both ends of the fuel rails are tapped, so you just need to connect the ends to balance the fuel pressure if I'm understanding the issue.
