Good MAF vs. Bad MAF..the Dyno Test @ MarylandSpeed - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

MarylandSpeed · 08-27-2011, 06:02 PM

We had a customer come in today who wanted to dyno his Camaro. His mods were a CAI intake, ADM Scoop, Solo High flow cats, and I *think* a Borla catback. It also had a mail order tune from another vendor...which we did not touch. He had been experiencing bucking, and realized he had the so called "bad" MAF with the single letter. He wanted to buy a new one for us, so I threw in some extra dyno runs to see what happened before and after. The end results are in the graph below.

We did two runs on the stock "bad" MAF sensor, followed by 3 with the new "good" sensor. The customer had been running with the CAI lid off..which I am thinking contributed to run 1 being a little higher. The rest of the runs were run with the lid on. As you can see..it is basically the same car with either MAF. There was no difference outside the margin of error for the dyno...aside from a little roughness up top..where the car may be pulling spark.

Now to understand why the car is the same, you have to understand why the "bad" MAF is bad. Basically, it does not react as fast to incoming airflow as the newer one. That being said, it still reacts plenty fast for both the stock, and most traditional "bent" elbow intakes. Where you run into an issue is with an intake like Vararam that places the MAF right in front of the throttle body. Then the shower reaction time is exposed. Now the true test here will be when the customer reports back if his bucking is gone. If it is not, then the issue was obviously not the MAF. Either way..I thought it would be a neat little comparison to look at.

mike25 · 08-27-2011, 06:10 PM

looks like the new maf is causing a loss of tq.

SUX2BU · 08-27-2011, 06:21 PM

Cool. I would so be dynoing anything and everything if I had a dyno.

MarylandSpeed · 08-27-2011, 07:29 PM

Quote:

Originally Posted by mike25

looks like the new maf is causing a loss of tq.

Like I said, the first and best run did not have the lid on the cai intake. Also it was warm humid so the car was def hot. I don't think the results are different enough to show either way.

mike25 · 08-27-2011, 08:08 PM

Quote:

Originally Posted by MarylandSpeed

Like I said, the first and best run did not have the lid on the cai intake. Also it was warm humid so the car was def hot. I don't think the results are different enough to show either way.

ah missed that part.

Camaro2SSRS · 08-27-2011, 08:19 PM

Quote:

Originally Posted by SUX2BU

Cool. I would so be dynoing anything and everything if I had a dyno.

me too!!

MarylandSpeed · 05-30-2012, 09:30 PM

Lot of talk about the MAF sensor recently, so I thought I would bump this.

carls2010 · 05-30-2012, 09:42 PM

great info to post...

joey0480 · 05-30-2012, 10:03 PM

Very informative and appreciate you guys took the time to do this

buzzy56 · 05-30-2012, 11:16 PM

I had a weak MAF sensor & finally changed it out for a strong one.Noticed right away that the sometime erratic idle at start up seemed to improve greatly.All I have is a CAI for add ons so I dont know ?????? Worth the money ???

Birm · 05-31-2012, 08:05 AM

Quote:

Originally Posted by MarylandSpeed

Lot of talk about the MAF sensor recently, so I thought I would bump this.

Much appreciated

The Stig · 05-31-2012, 08:28 AM

Quote:

Originally Posted by SUX2BU

Cool. I would so be dynoing anything and everything if I had a dyno.

my smart car rental car? Dyno'd

IndeedSS1 · 05-31-2012, 08:38 AM

Now this is good info

So you were dynoing with the hood open? I know that doesn't change the MAF sensor comparison, more curious about the CAI lid being on or off since the car has a scoop.

carls2010 · 05-31-2012, 09:41 AM

I Had replaced my weak sensor when veh had stock INTAKE, And it did improve idle, that rough at times

08-27-2011, 06:02 PM	#1
MarylandSpeed Account Suspended Drives: 2012 ZL1 & 2010 2SS/RS Join Date: Jul 2009 Location: Maryland Posts: 3,378	Good MAF vs. Bad MAF..the Dyno Test @ MarylandSpeed We had a customer come in today who wanted to dyno his Camaro. His mods were a CAI intake, ADM Scoop, Solo High flow cats, and I think a Borla catback. It also had a mail order tune from another vendor...which we did not touch. He had been experiencing bucking, and realized he had the so called "bad" MAF with the single letter. He wanted to buy a new one for us, so I threw in some extra dyno runs to see what happened before and after. The end results are in the graph below. We did two runs on the stock "bad" MAF sensor, followed by 3 with the new "good" sensor. The customer had been running with the CAI lid off..which I am thinking contributed to run 1 being a little higher. The rest of the runs were run with the lid on. As you can see..it is basically the same car with either MAF. There was no difference outside the margin of error for the dyno...aside from a little roughness up top..where the car may be pulling spark. Now to understand why the car is the same, you have to understand why the "bad" MAF is bad. Basically, it does not react as fast to incoming airflow as the newer one. That being said, it still reacts plenty fast for both the stock, and most traditional "bent" elbow intakes. Where you run into an issue is with an intake like Vararam that places the MAF right in front of the throttle body. Then the shower reaction time is exposed. Now the true test here will be when the customer reports back if his bucking is gone. If it is not, then the issue was obviously not the MAF. Either way..I thought it would be a neat little comparison to look at.

08-27-2011, 06:10 PM	#2
mike25 Drives: 2012 Camaro 2SS/RS Join Date: Jul 2009 Location: Dubba V Posts: 2,869	looks like the new maf is causing a loss of tq. __________________ 2LT/RS M6 CGM VIN#53104 SOLD 2012 Black 2SS/RS w/ Hurst- Mods: Corsa catback, SSE, Vararam

08-27-2011, 06:21 PM	#3
SUX2BU Quit being a pu$$y Drives: FAST Join Date: Jan 2011 Location: Sachse TX (DFW) Posts: 5,825 View My Garage	Cool. I would so be dynoing anything and everything if I had a dyno. __________________ <----- Click HERE to see ALL of my mods/write ups

05-30-2012, 10:03 PM	#9
joey0480 Drives: 2013 Evo X Join Date: Sep 2011 Location: New Jersey Posts: 562	Very informative and appreciate you guys took the time to do this __________________ 2013 Evo X GSR (SSS, leather, exterior package)....stage 2 bro SOLD:Team L99 ADM Race Intake and Scoop Vmax Ported TB Borla-S axlebacks ARH 1 7/8 Long Tubes and Hi Flo Cats 160 Thermostat Pfdat front and rear sways and endlinks Gold Pearl Powdercoated calipers Gloss black CFD strut covers GM gill stripes ******** 12" Stealth Kicker Package

05-30-2012, 11:16 PM	#10
buzzy56 buzzy56 Drives: 2ss summit white L99 Join Date: Nov 2009 Location: paradise Posts: 1,115 View My Garage	Don't Know ? I had a weak MAF sensor & finally changed it out for a strong one.Noticed right away that the sometime erratic idle at start up seemed to improve greatly.All I have is a CAI for add ons so I dont know ?????? Worth the money ??? __________________ OLD SCHOOL / NEW SCHOOL COOL

05-30-2012, 09:30 PM	#7
MarylandSpeed Account Suspended Drives: 2012 ZL1 & 2010 2SS/RS Join Date: Jul 2009 Location: Maryland Posts: 3,378	Lot of talk about the MAF sensor recently, so I thought I would bump this.

05-30-2012, 09:42 PM	#8
carls2010 Drives: 2006 Corvette Join Date: May 2011 Location: oswego, ny Posts: 263 View My Garage	great info to post...

05-31-2012, 08:38 AM	#13
IndeedSS1 Drives: 2010 Camaro SS LS3 Join Date: Sep 2010 Location: Eastern MO Posts: 3,786	Now this is good info So you were dynoing with the hood open? I know that doesn't change the MAF sensor comparison, more curious about the CAI lid being on or off since the car has a scoop. __________________ She is only memory now.

05-31-2012, 09:41 AM	#14
carls2010 Drives: 2006 Corvette Join Date: May 2011 Location: oswego, ny Posts: 263 View My Garage	I Had replaced my weak sensor when veh had stock INTAKE, And it did improve idle, that rough at times

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