10-21-2009, 10:27 AM | #1 |
Drives: 2010 Camaro Join Date: Jun 2009
Location: Phoenix
Posts: 251
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Air Intake Information for GM's 3.6L V6
The new Camaro direct injection system is advanced. The PCM is capable of identifying sensor readings that are outside of acceptable parameters and will compensate. The ability to compensate for sensor readings will allow the PCM to function with what is assumed to be degrading components. Sensor readings such as Mass Air Sensor frequency are expected to be within a particular range when sampled along with other engine sensors readings to include engine RPM, throttle position, etc. A component or group of components that cause sensor reading to be outside of acceptable range will lead to compensation settings from the PCM. The malfunction indicator lamp can illuminate if sensor readings (or combination of readings) are beyond these acceptable limits.
The PCMs ability to compensate results in restored functionality (or loss of temporary performance gains). Vehicle modifications can result in temporary “improvements” that are later adjusted back to original performance if those modifications result in sensor readings that are outside of the expected parameters. For example, installing an intake system with less restriction (more air flow) and mass air sensor mounting location that does not allow for proper sampling of the additional air flow. This will force the PCM to make necessary adjustments until it receives acceptable readings or combination of sensor readings. These “adjustments” result in original performance levels or an illuminated MIL if requirements are met. An intake system that is properly designed to provide less restriction (more air flow) while allowing the mass air sensor to sample the incoming air flow accurately (as it did in the original intake) should not result in the PCM re-learning or compensating. The additional air flow resulting from less restriction should be measured from the mass air sensor accurately as the correct frequency reading per volume of air. Additional air flow should continue to be sampled accurately from the mass air sensor until the additional amount of air flow exceeds the functional limits of the mass air sensor or the allowable parameters of the PCM. An unmodified Camaro will perform better at sea level than it will at 7000 feet elevation. This is due to the more dense air that is available at sea level. The mass air sensor will accurately read the difference in air density and the PCM will process accordingly (not relearn the performance back out) because the other PCM readings and functionality are within allowable limits. A properly modified Camaro will respond the same with additional air flow being measured accurately while maintaining sensor readings that are accurate and within allowable spec of the PCM. The challenge for aftermarket manufacturers is to develop performance systems that provide added air flow while retaining sensor functionality within their design limits. Our staff of engineers and ASE certified techs utilize our in-house chassis dyno, flow bench, mass air sensor flow bench, rapid prototype equipment and much more to insure our products function and fit as intended. Our success has resulted in the consultation of performance intake systems to OEM manufacturers. |
10-21-2009, 10:36 AM | #2 |
PWA Relapse
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Thanks for clearing this up!
- X
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10-21-2009, 11:04 AM | #3 |
You Can Call Me Jay
Drives: 2010 1LT RJT Manual w/CAI & Solo Join Date: Sep 2009
Location: Louisville, KY area
Posts: 1,284
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exactly what I suspected all along.
Thats why I went and bought the Airaid. AND I LOVE the sound & extra torque. |
10-21-2009, 11:33 AM | #4 |
Don't Feed the Troll
Drives: 2010 Camaro 2LT/RS & 1999 Corvette Join Date: Jun 2009
Location: Montgomery, TX
Posts: 774
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Question about the MAF?
Which way is the proper way to install the MAF in the Airaid system? Does it really matter? After reading the above info by David, it just might make a difference. I installed the MAF the way it showed in the directions, which is opposite of the way the factory had it.
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10-21-2009, 12:01 PM | #5 | |
You Can Call Me Jay
Drives: 2010 1LT RJT Manual w/CAI & Solo Join Date: Sep 2009
Location: Louisville, KY area
Posts: 1,284
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Quote:
No CEL and it's performing very well....so I'm not worried. |
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10-21-2009, 12:05 PM | #6 |
Airaid, well done and hopefully this dispells some of the fiction that it cannot be accomplished with the V6 PCM! Cannot wait to install mine when it arrives.
best J |
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10-21-2009, 12:16 PM | #7 | |
Drives: 2010 Camaro Join Date: Jun 2009
Location: Phoenix
Posts: 251
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Quote:
The MAF sensor will only mount in the tube 1 way. If you put it in backwards, the holes do not line up. any other questions, please let me know. Thanks, David |
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10-21-2009, 02:06 PM | #8 |
:chevy:
Drives: 2LT/RS Join Date: Jun 2008
Location: Toronto
Posts: 13,033
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thanks for the info David!
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10-21-2009, 02:19 PM | #9 |
Cousin of Foo
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So your saying a Houston Camaro performs better than a Denver Camaro?
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10-21-2009, 02:35 PM | #10 |
Drives: 2006 Dodge Charger / 2SS IOM Join Date: Dec 2008
Location: United Kingdom
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10-21-2009, 03:49 PM | #11 | |||
Drives: 1LT; IBM; 6 Spd Manual Join Date: May 2009
Location: Heath, Tx.
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Quote:
Quote:
'Within an allowable spec' does not mean a predetermined power level does it ? In other words, the ECU has a set target torque / power rating and therefore based on sensor inputs, compensations or adjustments will be made to maintain a set performance level ? Quote:
Dave, thank you for posting. Your attention to customer detail and inquiries only make me more satisfied that I purchased an Airaid system.
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10-21-2009, 04:55 PM | #12 |
Red Brick of Vengeance!
Drives: 12 Second Brick Join Date: Jun 2009
Location: at my pulpit
Posts: 7,745
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Good info!
From the Jannetty CAI shootout (http://www.camaro5.com/forums/showthread.php?t=48202) Here are the results: http://spreadsheets.google.com/pub?k...=1&output=html In regards to fuel trims... Stock was -3%. My understanding is that the ECU is saying "Ok, I calculated the amount of fuel I need based on the MAF, temp, etc. and I am running a bit to rich based on the o2 sensor so I had to subtract some fuel (-3%) to bring my Air Fuel Ratio back to where i want it" After installing the Airaid the fuel trim goes to +7%, (10% swing). Now the the ECU is saying "Ok... I calculated the amount of fuel I need based on the MAF, temp, etc. and now I'm running to lean. I had to add more fuel (+7%) to bring my A/F back where I want it" Now my understanding is +7% is not a big deal (some say less than +/- 10% to +/- 20%... So this is some of the part of the ECU that corrects things... There are also long term and short term fuel trims... and my understanding is if the fuel trims get to far apart then you can trigger a CEL.. Say the long term is -5% and all of a sudden the short term fuel trim goes to +25% you probably have a problem! LOL
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10-21-2009, 10:25 PM | #13 | |
Drives: 2007 MINI Cooper S Join Date: Oct 2009
Location: Santa Fe, New Mexico
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Hello everyone... I've been cruising around the sight for about a month now, reading and researching all that is being written about the V6 Camaro in hopes of eventually making a well formed decision when it comes time to lay down some money for one.
That said, I was struck by the following: Quote:
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10-21-2009, 11:53 PM | #14 |
Drives: SIM/2LT/RS/Black/Manual Join Date: Aug 2009
Location: Roanoke, VA
Posts: 143
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So will relocating the IAT sensor outside of the MAF sensor, as some are doing to get a colder air read, cause any issues with the PCM calculations making it "reset" and prevent gains?
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