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Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons Bolt-Ons | Intakes | Exhaust

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Old 06-29-2013, 05:24 AM   #1
TSSUNAMI
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Strong MAF sensor. Believe the hype.

So I've had my 2011 1SS RS for some time now, and I've had a nagging issue with mild throttle surging when going into neutral, as well as a choppy idle, and an occasional random bogging when downshifting and getting on the gas hard.

After reading thread after thread, about vacum leaks (couldn't find any leaks) Throttle surging (some think it's normal) The potential drawbacks of an OTR intake (I have a New Era, it's awesome.) As well as a plethora of other issues and solutions, I stumbled onto a thread about the MAF sensor.

I'm sure many of you here have read up on the topic, but it never occured to me that my car just may have a weak sensor.

Ordered my new "strong" MAF from Apex Chase, last week. It arrived today. Took all of 5 minutes to install.

Here's the results.

Low RPM surging: GONE
Choppy Idle: GONE
Bogging on downshifts: GONE
Bogging from off throttle to high throttle conditions: G O N E

Decel popping was also marginally softened. (my car sounded like a drive bye shooting. It's not as cool as you'd think. I promise. Especially at 5 AM when I'm typically coming home from work.)

Overall I am a VERY happy camper right now. Prior to adding long tube headers, I really never noticed any of these issues. I thought a good tune would fix it. I was wrong. This may have been the best 100 bucks I've ever spent on my car.

Thank you Chase!
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Old 06-29-2013, 05:34 AM   #2
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That is great! I am glad that your issues were finally worked out.

For those that would like more information on the MAF sensor issue, check out the link below.

"Weak" vs "Strong" Camaro SS MAF Sensors
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Old 06-30-2013, 04:34 PM   #3
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When I installed my ADM Race intake this was the first thing I checked. I was fortunate enough to have a strong MAF from the factory.

Without a doubt this is a thing to be aware of.
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Old 07-02-2013, 05:19 AM   #4
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Quote:
Originally Posted by Firefighter View Post
When I installed my ADM Race intake this was the first thing I checked. I was fortunate enough to have a strong MAF from the factory.

Without a doubt this is a thing to be aware of.
It is a crap shoot. Some get lucky, some don't. But like you said, definitely something you want to check.
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Old 07-02-2013, 07:11 AM   #5
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I had a weak one. Swapped it out along with the Apex scoop and bottle. Very happy camper.
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Old 07-02-2013, 01:19 PM   #6
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data logging can make it easy to detect if you have a weak maf.
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Old 07-02-2013, 01:23 PM   #7
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Quote:
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data logging can make it easy to detect if you have a weak maf.
What are we looking for? All I have ever seen is my MAF signal, so I don't really have anything to compare it to.
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Old 07-02-2013, 01:25 PM   #8
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Hehe. Nevermind BLACK10... it's right there in the 1st paragraph of Chase's article .
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Old 07-02-2013, 01:31 PM   #9
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Quote:
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data logging can make it easy to detect if you have a weak maf.
Just curious, has anyone did the "strong" MAF mod and it didnt cure their bucking and surging problem?
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Old 07-02-2013, 01:37 PM   #10
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Just curious, has anyone did the "strong" MAF mod and it didnt cure their bucking and surging problem?
I have a strong MAF and my car has always idled rough and bucked in parking lots pretty bad. It also squeaks sometimes when the motor misses a beat at idle. Almost sounds cammed once it's warmed up.
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Old 07-02-2013, 01:57 PM   #11
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Quote:
Originally Posted by thahemp View Post
I have a strong MAF and my car has always idled rough and bucked in parking lots pretty bad. It also squeaks sometimes when the motor misses a beat at idle. Almost sounds cammed once it's warmed up.
That's why I was asking. Bc my car idles rough at first start up, sounds cammed which is kinda cool, then after it warms up for a min, the idle calms down.

Then once I pull out of my driveway and get onto the street, it drives perfect thru the gears, but as I'm slowing down like at a stoplight, it surges pretty hard as it downshifts to each lower gear. The rpms act like as if someone gives it gas right as its downshifting.
This gets a little less noticeable after you drive it for 10-15 min but it never COMPLETLY goes away!
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Old 07-02-2013, 02:06 PM   #12
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Quote:
Originally Posted by Camarojt View Post
That's why I was asking. Bc my car idles rough at first start up, sounds cammed which is kinda cool, then after it warms up for a min, the idle calms down.

Then once I pull out of my driveway and get onto the street, it drives perfect thru the gears, but as I'm slowing down like at a stoplight, it surges pretty hard as it downshifts to each lower gear. The rpms act like as if someone gives it gas right as its downshifting.
This gets a little less noticeable after you drive it for 10-15 min but it never COMPLETLY goes away!
There are several things that could cause similar symptoms. What modifications do you have done to your car?
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Old 07-02-2013, 02:10 PM   #13
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Quote:
Originally Posted by Camarojt View Post
That's why I was asking. Bc my car idles rough at first start up, sounds cammed which is kinda cool, then after it warms up for a min, the idle calms down.

Then once I pull out of my driveway and get onto the street, it drives perfect thru the gears, but as I'm slowing down like at a stoplight, it surges pretty hard as it downshifts to each lower gear. The rpms act like as if someone gives it gas right as its downshifting.
This gets a little less noticeable after you drive it for 10-15 min but it never COMPLETLY goes away!
Mine never calms down. I'm probably gonna check mine again... It was so long ago that I checked it I'm starting to doubt myself.

I think I'll use BLACK10's method and monitor the MAF frequency with the laptop. I hate pulling that fastlane intake out.
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Old 07-02-2013, 07:22 PM   #14
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Quote:
Originally Posted by Apex Chase View Post
There are several things that could cause similar symptoms. What modifications do you have done to your car?
All bolt ons Chase.

ADM CAI w/scoop
PTB
1 7/8 headers
3" exhaust
UDP
Circle D 3600 stall
strong MAF
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