Rotating MAF = Better Performance?
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From: Illinois
It didn't set off a code but it was very close to doing so. I figured something would be off monkeying around with the maf and also the larger diameter of the pipe. But it wasn't anything that can't be compensated for with a little computer tweaking 
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From: Huntington Beach/CA
Originally posted by soap
How do you know this?? Just curious........not saying it's not true.
--Joe
How do you know this?? Just curious........not saying it's not true.
--Joe
Last edited by Flying Mofo; Jul 17, 2003 at 02:01 PM.
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From: Alabama
Re: Rotating MAF = Better Performance?
Originally posted by Crick
I was at my brothers work on Monday and we were doing some work on my XLT. My brother has always loved cars and working on them, specifically tuning them to run a good as possible.
His boss has a friend who just got an older (i guess late 80's early 90's) cobra engine built from Ben Pilla (sp?) Performance. Since everything else on the car was stock except the engine, my brother recommended some upgrades. One of the upgrades that my brother got for him was an larger MAF. One of the people from Pilla told him to rotate the MAF once it is installed and that will change the way the engine runs.
When I first head this I was like :bsflag: but after he put it on and the car was idleing a bit rough, he rotated it (while the engine was running) and sure as **** the engine was running smoother.
Has anyone heard of this before? I never read anything about that here but maybe since the L's use forced induction it makes no difference? :dunno: or maybe there is a hundreth or two to be had by rotating your MAF
The other option is that I am knucklehead when it comes to these things :o
I was at my brothers work on Monday and we were doing some work on my XLT. My brother has always loved cars and working on them, specifically tuning them to run a good as possible.
His boss has a friend who just got an older (i guess late 80's early 90's) cobra engine built from Ben Pilla (sp?) Performance. Since everything else on the car was stock except the engine, my brother recommended some upgrades. One of the upgrades that my brother got for him was an larger MAF. One of the people from Pilla told him to rotate the MAF once it is installed and that will change the way the engine runs.
When I first head this I was like :bsflag: but after he put it on and the car was idleing a bit rough, he rotated it (while the engine was running) and sure as **** the engine was running smoother.
Has anyone heard of this before? I never read anything about that here but maybe since the L's use forced induction it makes no difference? :dunno: or maybe there is a hundreth or two to be had by rotating your MAF
The other option is that I am knucklehead when it comes to these things :o
This reason for this is that the air is coming out of a 90 degree bend and immediately entering the MAF, the proper airflow could be missing the sample tube. So you rotate the MAF to get a certain voltage at idle .....this is a common problem with MAFS located after a 90 degree bend such as a Densecharger on an 03 Cobra or something similar.
My friend got this information directly from an engineer at Pro M after purchasing his aftermarket MAF from them.
Last edited by Six Spd Z28; Jul 17, 2003 at 02:31 PM.
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From: PDX
Originally posted by SVTRobG
It didn't set off a code but it was very close to doing so. I figured something would be off monkeying around with the maf and also the larger diameter of the pipe. But it wasn't anything that can't be compensated for with a little computer tweaking
It didn't set off a code but it was very close to doing so. I figured something would be off monkeying around with the maf and also the larger diameter of the pipe. But it wasn't anything that can't be compensated for with a little computer tweaking
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From: Illinois
Get it on the dyno to be 100% sure but I'm sure you'll have to adjust for the larger, freer flowing pipe. Also of note is that the shorter air filter ( 9" ) makes 5 more hp than the bigger 12" filter.
Like you said, the rotation of the maf sensor in a perfectly round tube doesn't matter because the heated wire will always be centered. The distance the maf is from the throttle body would be the bigger concern.
Like you said, the rotation of the maf sensor in a perfectly round tube doesn't matter because the heated wire will always be centered. The distance the maf is from the throttle body would be the bigger concern.
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From: Selden NY
Mine use to be this way
But is now this way
Run it hard with and without Nitrous,
haven't noticed any change
"OR" Leaning out
EDIT
Sorry Speeding Bob
Picture changed
But is now this way
Run it hard with and without Nitrous,
haven't noticed any change
"OR" Leaning out
EDIT
Sorry Speeding Bob
Picture changed
Last edited by Rob_02Lightning; Jul 17, 2003 at 11:14 PM.
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Originally posted by Flying ****
Seen it first hand on the dyno with a 03 Cobra when the first densecharger was released. Believe what you want, but the MAF is the last thing you need to be screwing with under the hood.
Seen it first hand on the dyno with a 03 Cobra when the first densecharger was released. Believe what you want, but the MAF is the last thing you need to be screwing with under the hood.
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From: Huntington Beach/CA
What is it you dont understand? A 90 degree bend before a MAF is dangerous. A guy working out of his garage building a larger intake tube out of plastic, which increases turbulance, spells disaster. AKA.. Cobra Densecharger and Mac CAI.
Straight shot or not, you can lean out your engine by moving the maf around. Just because you didnt experience now, doesnt mean it wont happen in the future.
Case in point.. I installed my JLP Ram Air kit in dec... The little gasket thinger had fallen past the sample tube just a **** hair, causing the truck to lean out.
If the incoming air doesnt hit the meter correctly, thats when the shizzle hits the fan.
Straight shot or not, you can lean out your engine by moving the maf around. Just because you didnt experience now, doesnt mean it wont happen in the future.
Case in point.. I installed my JLP Ram Air kit in dec... The little gasket thinger had fallen past the sample tube just a **** hair, causing the truck to lean out.
If the incoming air doesnt hit the meter correctly, thats when the shizzle hits the fan.
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From: Selden NY
I sure hope Johnny, or any tuner or mfg, who's Air kit moves the Maf will have something to say here ?
That sucks Mo Fo, that gasket's a bitch to work with aint it ?
I always worried about that seal when I change my filter set up time after time before going with the JLP Box.
I do know "and understand" ANY un-metered air is bad.
thats why I no longer run a Breather Cap (even know I licked that problem over a yr ago by using a check valve in the breater)
I guess this is another reason why I run super super rich and use 2 ranges colder plugs,
Safety, Safety, Safety.........Forgiveness, Forgiveness, Forgiveness
That sucks Mo Fo, that gasket's a bitch to work with aint it ?
I always worried about that seal when I change my filter set up time after time before going with the JLP Box.
I do know "and understand" ANY un-metered air is bad.
thats why I no longer run a Breather Cap (even know I licked that problem over a yr ago by using a check valve in the breater)
I guess this is another reason why I run super super rich and use 2 ranges colder plugs,
Safety, Safety, Safety.........Forgiveness, Forgiveness, Forgiveness
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Originally posted by Flying ****
What is it you dont understand? A 90 degree bend before a MAF is dangerous. A guy working out of his garage building a larger intake tube out of plastic, which increases turbulance, spells disaster. AKA.. Cobra Densecharger and Mac CAI.
Straight shot or not, you can lean out your engine by moving the maf around. Just because you didnt experience now, doesnt mean it wont happen in the future.
Case in point.. I installed my JLP Ram Air kit in dec... The little gasket thinger had fallen past the sample tube just a **** hair, causing the truck to lean out.
If the incoming air doesnt hit the meter correctly, thats when the shizzle hits the fan.
What is it you dont understand? A 90 degree bend before a MAF is dangerous. A guy working out of his garage building a larger intake tube out of plastic, which increases turbulance, spells disaster. AKA.. Cobra Densecharger and Mac CAI.
Straight shot or not, you can lean out your engine by moving the maf around. Just because you didnt experience now, doesnt mean it wont happen in the future.
Case in point.. I installed my JLP Ram Air kit in dec... The little gasket thinger had fallen past the sample tube just a **** hair, causing the truck to lean out.
If the incoming air doesnt hit the meter correctly, thats when the shizzle hits the fan.
Now this is a more understandable post then the previous one.
