tooter's manifold adventure... - Toyota Yaris Forums

tooter · 03-03-2013, 01:36 PM

Not yet...

You know, I thought about that metal lattice and was searching online to see if anyone else had any negative effects from removal. All I could find was problems with a screen on older cars, but that was in front of the MAF sensor. Removing it messed with the idle and A/F ratio for some vehicles. I can't see how removing it would cause any problems, although I thought it might make for smoother less turbulent airflow across the backside of the butterfly when it's less than fully open. The air flow over the tipped in end of the butterfly is smoother because it's slanted in the right direction whereas the backside tips upward into the airflow.

I just played it safe and used standard readily available off the shelf stock Toyota O ring gaskets on both ends. The metal lattice can simply be snipped out if desired.

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03-03-2013, 01:36 PM	#11
tooter play every day Drives: 2012 Yaris L 2dr 5sp Join Date: Apr 2012 Location: Los Angeles Posts: 1,962	Not yet... You know, I thought about that metal lattice and was searching online to see if anyone else had any negative effects from removal. All I could find was problems with a screen on older cars, but that was in front of the MAF sensor. Removing it messed with the idle and A/F ratio for some vehicles. I can't see how removing it would cause any problems, although I thought it might make for smoother less turbulent airflow across the backside of the butterfly when it's less than fully open. The air flow over the tipped in end of the butterfly is smoother because it's slanted in the right direction whereas the backside tips upward into the airflow. I just played it safe and used standard readily available off the shelf stock Toyota O ring gaskets on both ends. The metal lattice can simply be snipped out if desired.