90* MAF rotation
Burning Brakes
Joined: Nov 2007
Posts: 1,083
Likes: 3
From: Buena Park CA
I rotated my MAF 90 degrees with the screen removed and didn't notice any improvement, but it just makes sense to do it as the airflow detection sensor is now parallel with the throttle body butterfly....a little (probably imeasurable) more air flow.
Le Mans Master
Joined: Aug 2002
Posts: 8,472
Likes: 38
From: Houston TX
St. Jude Donor '11
Clocking the MAF should only be necessary on a vehicle with a sharp bend in front of the MAF. We have a very straight shot. Even then you cannot just clock it ~45 degrees at a time until you feel a SOTP gain. You'd have to log the fuel trims or AFR error against the MAF transfer table to see where it follows the general polynomial curve best.
Safety Car
Joined: Dec 2004
Posts: 3,565
Likes: 5
From: stafford country, va. Avatar: Me on turn 3 @ Bristol (The World's Fastest Half-Mile)
think of the whole system as a air tunnel.
imo, it's the easiest free mod. around, but then again...
without getting too philosophical, the more air you push through it (with it rotated) the better it will perform. the maf housing has an integrated airfoil. it's questionable if it provides any gains but imo, i prefer to align it with the tb butterfly post.
i believe rotating it only works on the '05-'07's. if i recall correctly, the '08 c6 uses the c6 z06 probe style maf.
imo, it's the easiest free mod. around, but then again...
without getting too philosophical, the more air you push through it (with it rotated) the better it will perform. the maf housing has an integrated airfoil. it's questionable if it provides any gains but imo, i prefer to align it with the tb butterfly post.
i believe rotating it only works on the '05-'07's. if i recall correctly, the '08 c6 uses the c6 z06 probe style maf.
Safety Car
Joined: Dec 2004
Posts: 3,565
Likes: 5
From: stafford country, va. Avatar: Me on turn 3 @ Bristol (The World's Fastest Half-Mile)
Burning Brakes
Joined: Feb 2008
Posts: 988
Likes: 2
The only way it will increase power is if it is reading less air and thus running the car leaner. If it is reading more air, its going to run richer.
It might be a free mod for un-tuned guys, but don't rotate it if your car is tuned.
It might be a free mod for un-tuned guys, but don't rotate it if your car is tuned.
Le Mans Master
Joined: Aug 2002
Posts: 8,472
Likes: 38
From: Houston TX
St. Jude Donor '11
Turning it sideways is not going to increase airflow at all. Clocking the MAF is done to address airflow metering issues in abnormal air ducts.
you guys are taking snake oil to a whole new level. At least it's free snake oil.
you guys are taking snake oil to a whole new level. At least it's free snake oil.
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Burning Brakes
Joined: Nov 2004
Posts: 988
Likes: 4
From: Livermore CA
I rotated mine 360 degrees and gained about 100 hp until my flux capacitor burned out.
All kidding aside, it makes sense to line up the MAF vanes with the throttle butterfly shaft, but the gains in flow and resulting hp would be hard to measure and probably harder to feel.
All kidding aside, it makes sense to line up the MAF vanes with the throttle butterfly shaft, but the gains in flow and resulting hp would be hard to measure and probably harder to feel.
Melting Slicks
Joined: Sep 2005
Posts: 2,670
Likes: 134
From: merritt island fl
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I have run the numbers, and if they are correct, there is turbulent flow, not laminar through the TB and MAF. Rotating the MAF won't make any difference.
Pro
Joined: Feb 2006
Posts: 690
Likes: 0
From: VA
I rotated my MAF 90 w/ the square portion of the sensor now pointing towards the hood. While I would think there is less "turbulence" (not additional air) by lining up the divider in the MAF w/ the divider in the TB, the big benifit in my opinion, is getting the built in IAT farther away from the hot upper radiator hose ie.. moving the square part w/ the connector farther away as it seems to be closest to the radiator hose. In addition I bought some rubber hot water pipe insulation and used it to cover the upper radiator hose below the MAF to reduce heat soak on the integral IAT. It is black and I secured it w/ black zippy ties. My hope is that on hot days the computer will not be pulling as much timing hurting my cars performance as it would have before the mod. We shall see.
Last edited by GMRULZ; Mar 10, 2008 at 05:43 PM.
