Maf spray claim
Thread Starter
Safety Car
Joined: Jul 2008
Posts: 3,966
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From: Made In America
St. Jude Donor '10-'11
Maf spray claim
I just got back from Autozone and bought some Maf cleaner spray and it is specifically designed for fuel injected cars with Mafs. Great, it's the right stuff. I read the bottle and it says adds 4-10 horsepower to the wheels. I asked the sales clerk about it and he swore up and down that it would make my car alot faster. I was thinking this guy was a bit odd but yea, i spraed each side down with 4 quick shots and am letting it dry for a few hours in the shade. I know damn good and well, I am not going to see any horsepower. It's not even that dirty. What do you guys think of that outrageous claim for some cleaner?
Race Director
Joined: Apr 2003
Posts: 17,699
Likes: 1,667
From: moraga ca
Hate to say this, but there's a sucker born every minute. Bolt the maf back up, drive to Autozone with your receipt and return the thing. How in the world do you think this can possibly give you 4 hp? By the way, I've got some land in a swamp in Florida for sale... 
Le Mans Master
Joined: Jul 2007
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From: Tampa Florida
Race Director
Joined: Apr 2003
Posts: 17,699
Likes: 1,667
From: moraga ca
Melting Slicks
Joined: Oct 2004
Posts: 2,510
Likes: 4
From: Austin Texas
Forget about the 4-10 HP gains, abvious selling hype.....but it is good practice to to clean your MAF sensors and the screan mesh. The MAF sensor is heated up by running specific amount of current through it. as more air passes over the sensor during accleration, the temps sensor will decrease, which will casue the circuit to increase current to maintain a pre-determined sensor temp. All of this activity and information is translated into the Mass of Air that is Flowing. By keeping the sensors clean, they can react more accurately. The intent of the screen is to have uniform air flow through the intake so that the small sensors are representative of the airflow through the entire screen. De-screening is not a good idea, as this can create turbulance and mess up the true air mass reading.
Thread Starter
Safety Car
Joined: Jul 2008
Posts: 3,966
Likes: 4
From: Made In America
St. Jude Donor '10-'11
I didn't buy it for the horsepower gain! I bought it because it was the only brand they sold and the maf should be cleaned occassionally. I would rather spend 5 dollars and ignore the claim than having my maf sensor cause my motor to run rich or lean due to the fact that it's getting a false reading. I was saying, how can any one be gullable enough to buy it PURELY for that reason. I was poking fun of it. Notice I said "outrageous" claim, how I openly admitted it was purely 
. I am expecting nothing from cleaning the Maf sensor other than having the feeling that I am doing my part of keeping my motor and the electronics up to par to minimize the chance of failure. There may be suckers born, but I am not one and took no interest in that stupid claim.
. I am expecting nothing from cleaning the Maf sensor other than having the feeling that I am doing my part of keeping my motor and the electronics up to par to minimize the chance of failure. There may be suckers born, but I am not one and took no interest in that stupid claim.
Thread Starter
Safety Car
Joined: Jul 2008
Posts: 3,966
Likes: 4
From: Made In America
St. Jude Donor '10-'11
I just got back from Autozone and bought some Maf cleaner spray and it is specifically designed for fuel injected cars with Mafs. Great, it's the right stuff. I read the bottle and it says adds 4-10 horsepower to the wheels. I asked the sales clerk about it and he swore up and down that it would make my car alot faster. I was thinking this guy was a bit odd but yea, i spraed each side down with 4 quick shots and am letting it dry for a few hours in the shade. I know damn good and well, I am not going to see any horsepower. It's not even that dirty. What do you guys think of that outrageous claim for some cleaner?:toetap:
As stated in my original post, I expect no horsepower gains...
Thread Starter
Safety Car
Joined: Jul 2008
Posts: 3,966
Likes: 4
From: Made In America
St. Jude Donor '10-'11
Horsepower from cleaning the Maf?
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Thread Starter
Safety Car
Joined: Jul 2008
Posts: 3,966
Likes: 4
From: Made In America
St. Jude Donor '10-'11
Forget about the 4-10 HP gains, abvious selling hype.....but it is good practice to to clean your MAF sensors and the screan mesh. The MAF sensor is heated up by running specific amount of current through it. as more air passes over the sensor during accleration, the temps sensor will decrease, which will casue the circuit to increase current to maintain a pre-determined sensor temp. All of this activity and information is translated into the Mass of Air that is Flowing. By keeping the sensors clean, they can react more accurately. The intent of the screen is to have uniform air flow through the intake so that the small sensors are representative of the airflow through the entire screen. De-screening is not a good idea, as this can create turbulance and mess up the true air mass reading.
Melting Slicks
Joined: Oct 2004
Posts: 2,510
Likes: 4
From: Austin Texas
so do I win all that $$$$ in your avatar ?
Thread Starter
Safety Car
Joined: Jul 2008
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From: Made In America
St. Jude Donor '10-'11
Le Mans Master
Joined: Feb 2000
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From: Kempner Texas
I suspect the claim of horsepower increase is based on a worse case situation. If your MAF wires are heavily coated with oil or residue, then cleaning them with the spray MAY show a HP increase.
When the MAF wires on my 86 were coated with K&N filter oil, my BLM readings were pegged at 108. Spraying the wires with CRC brought those values back into normal range. That change could have resulted in a HP improvement.
Advertising, many times, plays games with your head.
Jake
When the MAF wires on my 86 were coated with K&N filter oil, my BLM readings were pegged at 108. Spraying the wires with CRC brought those values back into normal range. That change could have resulted in a HP improvement.
Advertising, many times, plays games with your head.
Jake
Race Director
Joined: Aug 2000
Posts: 11,470
Likes: 763
I just got back from Autozone and bought some Maf cleaner spray and it is specifically designed for fuel injected cars with Mafs. Great, it's the right stuff. I read the bottle and it says adds 4-10 horsepower to the wheels. I asked the sales clerk about it and he swore up and down that it would make my car alot faster. I was thinking this guy was a bit odd but yea, i spraed each side down with 4 quick shots and am letting it dry for a few hours in the shade. I know damn good and well, I am not going to see any horsepower. It's not even that dirty. What do you guys think of that outrageous claim for some cleaner?
- your first clue - "sales clerk at autozone" 
Last edited by Joe C; Mar 11, 2009 at 03:59 PM.
Melting Slicks
Joined: Jun 1999
Posts: 2,949
Likes: 23
From: Bowling Green KY
All these MAF's have a "burnoff" feature specifically for this reason - so they shouldn't ever really get dirty enough to need a cleaning. That being said, I'll probably still try some of this stuff.
Melting Slicks
Joined: Jun 1999
Posts: 2,949
Likes: 23
From: Bowling Green KY
Pro
Joined: Jun 2001
Posts: 520
Likes: 6
From: Elverson PA
I cleaned my maf using this stuff over a white rag. I was surprised at how much black residue was on the rag when I was done. As far as hp gain, doubt it, but every little thing adds up. If you have a dirty maf, dirty tb, and dirt everywhere you will have idle and maybe driveability problems, and I will bet your car won't run as well as someone who has everything clean and maintained.
Dave
Dave