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

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Old 12-28-2011, 01:18 PM   #1
1985airborne
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Jet Mass flow Sensor???

Has anybody used one and will this throw a CEL with headers and a CAI and Catback exahuast? One of my buddies was asking me about it and I didnt know so I thought Id ask you guys...
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Old 12-28-2011, 02:08 PM   #2
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Its crap and a waste of money. A sensor is a sensor; they don't make power. Although theirs tend to fail more often or not be calibrated as well as GM's.
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Old 12-28-2011, 02:14 PM   #3
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Snake oil.
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Old 12-28-2011, 05:12 PM   #4
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DON'T!!!!!
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Old 12-28-2011, 08:58 PM   #5
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wow i was considering this too after people told me they felt more power with it but i guess not now
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Old 12-28-2011, 09:54 PM   #6
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The only mass airflow sensor mod anybody should do is check to make sure you have the better GM one, then replace it with a good GM one if needed.

As has been discussed several times, you can check by looking at the stamped identification number/letters on the sensor body. You want a letter followed by two numbers, of any combination.
There's a picture and close-up of the spot in the second picture here:
http://www.jdpmotorsports.com/brands...ensor-15865791
And even then, for most people, it won't make much of a difference, unless you have a Vararam, supercharger, or a custom tune.

Other than that, keep it stock!

- Jeremy
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Old 12-29-2011, 12:06 AM   #7
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Ok Guys thanks for the insight!!! I WILL NOT BUY!!!
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Old 12-29-2011, 05:51 AM   #8
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What about the MAF's from Granatelli Motor Sports?

http://www.granatellimotorsports.com...parent=33&pg=1
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Old 12-29-2011, 06:53 AM   #9
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Quote:
Originally Posted by cplabaunza View Post
What about the MAF's from Granatelli Motor Sports?

http://www.granatellimotorsports.com...parent=33&pg=1
Not sure what Granatelli did to "calibrate" their MAF's but all the MAF does is measure the air coming into the engine. As long as the stock one is reading properly, there's no need to swap it out. A MAF that guarantees a increase in anything is just changing the resistor values to "trick" the PCM. Ones i've seen in the past have lowered the temp value to make the PCM give more timing. This is a bad thing since it could potentially do harm to your engine.
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Old 12-29-2011, 01:03 PM   #10
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Quote:
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Not sure what Granatelli did to "calibrate" their MAF's but all the MAF does is measure the air coming into the engine. As long as the stock one is reading properly, there's no need to swap it out. A MAF that guarantees a increase in anything is just changing the resistor values to "trick" the PCM. Ones i've seen in the past have lowered the temp value to make the PCM give more timing. This is a bad thing since it could potentially do harm to your engine.
Exactly. Just like those $10 "performance chips" you see on eBay, they fool the computer to run differently than it should. You may notice a difference, but not worth the risk IMHO.

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Old 01-01-2012, 07:21 AM   #11
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Well there it is! Question answered!
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Old 01-01-2012, 02:06 PM   #12
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Quote:
Originally Posted by Granatelli View Post


Granatelli works in concert with GM, Delphi and Hitachi. Our meters offer more dynamic range. The Jet Meter is a stock meter with a decal.

If your car has no more than exhaust and a cold air you most likely don't need a meter.
More dynamic range? Are you saying that your MAF has a higher topend reading?
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Old 01-01-2012, 02:34 PM   #13
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+1 on explaining your dynamic readings please.
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Old 01-01-2012, 05:18 PM   #14
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I wouldn't mess with it unless you really need to.. Check you sensor just to make sure you don't have a "weak" sensor. I thought that it's a letter followed by a number.. It's a letter by 2 numbers? Because then I have a weak one as mine is just one number
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Old 01-01-2012, 08:19 PM   #15
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Quote:
Originally Posted by nycoupe11 View Post
I wouldn't mess with it unless you really need to.. Check you sensor just to make sure you don't have a "weak" sensor. I thought that it's a letter followed by a number.. It's a letter by 2 numbers? Because then I have a weak one as mine is just one number
From memory, as long as you have a letter and a number, you have one of the updated one. The supposedly "weak" ones only had a letter.
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Old 01-01-2012, 09:03 PM   #16
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Yea that's what I figured but after doing a CAI and ported throttle body I felt like at low RPM the car was gasping for air. Might be in my
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Old 01-01-2012, 11:14 PM   #17
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Originally Posted by Granatelli View Post
Look at it like this...if anyone needed a meter, we could sell them a replacement part that is better than stock, made by the same company with the same exacting standards and it would cost less than a factory part
I got the strong GM one from a dealer for $70; yours are listed at $173. Doesn't sound cheaper.
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Old 01-02-2012, 01:40 AM   #18
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Quote:
Originally Posted by Granatelli View Post
yes - stock slot in meter goes to 15,000 hz. The GMS meter is stable up to 20 khz. Also many industrial applications use the GMS meter becuase it can easily communicate with a frequency converter for 0 to 6 volt reference
That's good to know but who is over running their MAF? At what HP range do you start to run over 15 khz?
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