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Thread: Granatelli Mass Airflow Sensors

  1. #1
    rodcole1 is offline Cadillac Owners Member
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    Granatelli Mass Airflow Sensors

    Has anyone tried the Granatelli mass airflow sensor on their Escalade ??

    rodcole1


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    Re: Granatelli Mass Airflow Sensors

    I don't have experience with their products, but the Granatelli Brothers seem to have a certain touch for American iron. I would not be surprised if they are well worth the cost.

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    MEJIA's Avatar
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    Re: Granatelli Mass Airflow Sensors

    I first bought the Granatelli Mass Airflow Sensor and did notice a slight difference in performance, when I really noticed a greater increase in performance was when I used this sensor and the Predator programmer.

  5. #4
    hcvone is offline Cadillac Owners 10000+ Posts
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    Re: Granatelli Mass Airflow Sensors

    I personally dyno tested 4 GMS MAF's on my Z06, 2 of them lost power and the other 2 made no more power. Sport Truck magazine did a test on a Chevy truck and they reported a loss of 8 rwhp, the test was done in the magizine last summer.

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    elwesso's Avatar
    elwesso is offline Cadillac Owners Master
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    Re: Granatelli Mass Airflow Sensors

    I dont see how changing the MAF would get you any more power.....

  7. #6
    84caddy's Avatar
    84caddy is offline Cadillac Owners Fanatic
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    Re: Granatelli Mass Airflow Sensors

    I installed a K+N filter kit on my 00 escalade and it tended to bog a bit - and make more noise than power...later I installed the Gran. mass airflow sensor, and it improved the bog/hesitation

  8. #7
    elwesso's Avatar
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    Re: Granatelli Mass Airflow Sensors

    Bet that the K/N caused the MAF to become dirtied..... Therefore reading incorrectly...

  9. #8
    84caddy's Avatar
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    Re: Granatelli Mass Airflow Sensors

    either that or the factory MAS couldn't read the new airflow from the kit making it worse! The Gran MAS prob brought it back!!

  10. #9
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    Talking Re: Granatelli Mass Airflow Sensors

    tried one on my 04 ecalade/ feltgood/ but set off my
    check enginelight/ no help from granatelli tried 3 times to reset
    sent it home

  11. #10
    fast66's Avatar
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    Re: Granatelli Mass Airflow Sensors

    ... Never used them before.

  12. #11
    T_Dogg8's Avatar
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    Re: Granatelli Mass Airflow Sensors

    mass airflow sensors are one thing i don't mess with. the gains are minimal, but the chances of screwing something up are greater.

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    Re: Granatelli Mass Airflow Sensors

    I recommend you DON'T BUY the Granatelli Mass Airflow sensor at all. Had it installed in my 2002 Escalade and it throws Check Engine lights. I purchased a Diablo programmer that can also read the codes and also had my mechanic check and recheck the system.

    Turns out that the Granatelli causes the engine to think things are running too lean and even the 5% adjustment to the fuel/air mix you can make with the Diablo isn't enough to stop the Check Engine lights.

    Made two calls to Granatelli and the are NO HELP WHATSOEVER and played dumb with something like "this behaviour is unusual" which is crap as everyone seems to have the same problem.

    Just installed the stock airflow sensor back in and everything is fine now (still have an aftermarket cold air intake but just using the stock MAF).

  14. #13
    Granatelli is offline Cadillac Owners Member
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    Re: Granatelli Mass Airflow Sensors

    Quote Originally Posted by jamesmbond View Post
    I recommend you DON'T BUY the Granatelli Mass Airflow sensor at all. Had it installed in my 2002 Escalade and it throws Check Engine lights. I purchased a Diablo programmer that can also read the codes and also had my mechanic check and recheck the system.

    Turns out that the Granatelli causes the engine to think things are running too lean and even the 5% adjustment to the fuel/air mix you can make with the Diablo isn't enough to stop the Check Engine lights.

    Made two calls to Granatelli and the are NO HELP WHATSOEVER and played dumb with something like "this behavior is unusual" which is crap as everyone seems to have the same problem.

    Just installed the stock airflow sensor back in and everything is fine now (still have an aftermarket cold air intake but just using the stock MAF).
    Crazy - Granatelli helped to co found the Diablo Predator Flashtool - For sure they work great together. Granatelli MAF sensors are also 50 state legal meaning the are calibrated and accurate to within 1/10 of 1% Lastly they have a 90% no questions asked warranty. If our tech guys could not help you (odd to me) they could have and should offered you a refund I full. As owner, I am super sorry to hear this info

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    Quote Originally Posted by hcvone View Post
    I personally dyno tested 4 GMS MAF's on my Z06, 2 of them lost power and the other 2 made no more power. Sport Truck magazine did a test on a Chevy truck and they reported a loss of 8 rwhp, the test was done in the magizine last summer.
    Sport Truck never lost power :-) Factually Sport Truck picked up over 30hp with a Granatelli MAF, Intake and Ignition wires. Here is another from that era

    http://granatellimotorsports.com/ima...%20Article.pdf

  15. #14
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    Submariner409 is offline If it won't run, chrome it
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    Re: Granatelli Mass Airflow Sensors

    The thread has been dead for 12 years - and a so-called "performance MAF" is a huge load of snake oil and hype. Caveat Emptor.

    I diddled with a JET "performance MAF" in the 2002 STS. For 2,000 miles of local and long range Interstate driving. All it did was cost about 0.7 mpg in fuel economy decrease, set fuel/air codes, and introduced a midrange stumble upon WOT application.

    If anyone wants a 2000 - 2004 Northstar "performance" MAF it's on the shelf. But not worth 5 cents. You can see how the "performance" MAF was butchered to "increase airflow". It was NOT electrically altered - no changes were made to the heated resistors or the IAC thermistor values.

    Troops, if you buy so-called "performance parts" for any of these cars, demand a set of before and after dyno runs for YOUR car and equipment setup - if you can't get them, walk.
    Attached Images

  16. #15
    Granatelli is offline Cadillac Owners Member
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    Re: Granatelli Mass Airflow Sensors

    Quote Originally Posted by elwesso View Post
    I don't see how changing the MAF would get you any more power.....
    Historically aftermarket Intakes make the truck sound cool under hard acceleration but cause turbulence for the MAF. The Granatelli MAF is still the only aftermarket MAF sensor that is calibrated for larger (higher airflow) intake systems. I know I am 12 year late to this dance but it still kills me to see it - We stand behind the product 1000%

    https://www.granatellimotorsports.co...=video_gallery

    https://www.youtube.com/watch?v=XI58S2d_2VM

    ----------

    Quote Originally Posted by Submariner409 View Post
    The thread has been dead for 12 years - and a so-called "performance MAF" is a huge load of snake oil and hype. Caveat Emptor.

    I diddled with a JET "performance MAF" in the 2002 STS. For 2,000 miles of local and long range Interstate driving. All it did was cost about 0.7 mpg in fuel economy decrease, set fuel/air codes, and introduced a midrange stumble upon WOT application.

    If anyone wants a 2000 - 2004 Northstar "performance" MAF it's on the shelf. But not worth 5 cents. You can see how the "performance" MAF was butchered to "increase airflow". It was NOT electrically altered - no changes were made to the heated resistors or the IAC thermistor values.

    Troops, if you buy so-called "performance parts" for any of these cars, demand a set of before and after dyno runs for YOUR car and equipment setup - if you can't get them, walk.
    Sport Truck never lost power :-) Factually Sport Truck picked up over 30hp with a Granatelli MAF, Intake and Ignition wires. Here is another from that era

    http://granatellimotorsports.com/ima...%20Article.pdf

    I am not here to bash JET although...I can say and agree with you taking a stock MAF and gutting it does not make for a high Perf part. Hence why they meter in your pic was never 50 state legal. JET was merely chasing Granatelli business. We should not be compared in all fairness. Watch our video above it shows why we are who we are. To say our meters don't work is to say the GM meter from the factory from 2000 forward does not work because Granatelli and DELPHI worked in concert to develop this product. We are Engineering focussed - Always have been

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