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1987-1991 Parley with regards to your 1987 to 1991 Bonneville, Olds 88 or Buick Le Sabre Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 03-02-2006, 02:44 AM   #1
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ok now i have to know, does removing the MAF screen have any sort of effect on a naturally aspirated engine?
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Old 03-02-2006, 02:47 AM   #2
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no

http://www.bonnevilleclub.com/forum/...&highlight=maf
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#4 MAF screen removal:
There'* a TON of controversy over this. The purpose of the MAF screen is to keep the air flowing in a laminar fashion (no turbulence, flowing straight) over the MAF sensor for accurate readings. Some people have removed the screen, which is somewhat restrictive and may 'slow down' the air velocity as it forces the turbulent air to change direction to pass through it. The general consensus is that the MAF screen can be removed for a slight performance gain (probably in the neighborhood of 5hp, just at the edge of the threshold for 'feeling it'). If you have a stock airbox, or even a heavily-modified airbox, your idle quality will suffer greatly. This MOD, if you choose to do it, is best done with an aftermarket, smooth pipe custom intake with some type of K&N style cone filter. ****WARNING**** The MAF screen is also a 'last line of defense' for particles entering the TB. This is especially important on SC models. To remove the MAF screen, remove the intake pipe from the TB Plenum. Using a small jeweler'* screwdriver, gently remove the ring clip from the circumference of the screen. Now gently pry the screen from around the outer edge with a jeweler'* screwdriver, or straighten a paper clip and put a slight bend in one end, using this to pull the screen loose. Do NOT damage the screen, as you may end up needing to re-install it. One suggestion that was made would be to trim the screen down to a smaller size, and re-install that portion directly in front of the MAF sensor. If you choose this route on a SC model, just remember that you don't want this coming loose and going through the vanes of the blower.
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Old 03-02-2006, 02:52 AM   #3
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well thats good to know, thanks very much, i was just about to take it out
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