[Z06] Granatelli Motorsports replacement MAF sensor
07-06-2007, 04:37 PM
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Granatelli Motorsports replacement MAF sensor
Granatelli Motorsports replacement MAF sensor
does this mod work on a zo6 or is it just made for c6s?
does this mod work on a zo6 or is it just made for c6s?
Last edited by zo6 liberty; 07-06-2007 at 06:14 PM.
07-06-2007, 06:05 PM
#3
Does it help what? I've been around the C6 Z06 forum for quite some time, and I've never heard of it.
07-06-2007, 06:06 PM
#4
Drifting
The Granatelli MAF sensors got a pretty bad rap in the past on the C4 forum. The C6s appear to be sensitive to changes in the intake plenum. There are proven MAF sensors listed in this forum. I would proceed with caution and not make the change unless there are proven results from this MAF sensor.
07-06-2007, 06:30 PM
#6
Drifting
The Granatelli MAF sensors got a pretty bad rap in the past on the C4 forum. The C6s appear to be sensitive to changes in the intake plenum. There are proven MAF sensors listed in this forum. I would proceed with caution and not make the change unless there are proven results from this MAF sensor.
Heard the same thing.
07-10-2007, 05:20 AM
#9
Le Mans Master
wouldn't use any of their products after some of the crap they pulled/made over the past few years
07-10-2007, 08:01 AM
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St. Jude Donor '09
High Performance
The only MAF sensor that can be used on the LS7 and LS3 is the GM/Hitachi Probe MAF sensor.
Delphi lost the MAF battle three years ago when the Z06 was in development with their very restrictive Delphi MAF. I actually spoke with a Delphi engineer about their unit, and he indicated that the Hitachi MAF was less restrictive, and much less expensive. Two good reasons for GM to choose the Hitachi "Probe" MAF meter.
There is no such thing as a high performance MAF meter. Hype and BS from those that promote these have clouded the aftermarket since the 90s. We tested aftermarket MAF sensors and found a loss of power since the airflow was not being measured properly, which is the sole purpose of the Mass Air Flow Meter.
On the Z06, the MAF sticks into the air path at a specific location to sense the mass of air at a given amount of space. Algorithms and MAF codes are developed for each application, and the fallacy is that each modification must have a specific tune to go along with it.
Tuning, in the case of changing an airbox from a stock box, the only problem with tuning, is that "the area of measurement" must be within 10% of the exact area of measurement of the stock airbox, or the meter calculation will be off throughout the entire MAF code. Even locating the MAF meter in the wrong location will cause misread airflow, as was the case with the original LS7 airbox, during development.
One of the tricks, so to speak of the Halltech Killer Bee AAIS is about to be given away. Our bridge inserts the MAF meter far less into the airpath than stock. This helps airflow, since the protrusion of the MAF, is the only restrictive aspect of the MAF meter. How much does this matter? Our calculations show a 4% difference between measured airflow with our Killer Bee AAIS vs stock. The Killer Bee actually does slightly better job metering the airflow through our 103mm MAF housing than the stock bridge. Interestingly, we have calculated the area of measurement of the stock bridge (oval) vs. Halltech's MAF housing (circle) and found that the area is 4% smaller, increasing velocity at the MAF, and increasing actual airflow by this same factor due to the decreased protrusion of the sensor itself. Bigger is not better, since the measurement is the important job of the meter. The smaller the protrusion, the more airflow the engine will actually get.
The bottom line is there is only one MAF that can be used safely on the Z06, which does not require recalibrating the entire MAF code:
www.CorvetteLS7.com has a picture of the Hitachi MAF meter and the part number for reference on the lower left sidebar. They are under $100, and can be purchased from GM for installation in your stock AIS for hotswap situations if you have an aftermarket AIS.
Jim
Delphi lost the MAF battle three years ago when the Z06 was in development with their very restrictive Delphi MAF. I actually spoke with a Delphi engineer about their unit, and he indicated that the Hitachi MAF was less restrictive, and much less expensive. Two good reasons for GM to choose the Hitachi "Probe" MAF meter.
There is no such thing as a high performance MAF meter. Hype and BS from those that promote these have clouded the aftermarket since the 90s. We tested aftermarket MAF sensors and found a loss of power since the airflow was not being measured properly, which is the sole purpose of the Mass Air Flow Meter.
On the Z06, the MAF sticks into the air path at a specific location to sense the mass of air at a given amount of space. Algorithms and MAF codes are developed for each application, and the fallacy is that each modification must have a specific tune to go along with it.
Tuning, in the case of changing an airbox from a stock box, the only problem with tuning, is that "the area of measurement" must be within 10% of the exact area of measurement of the stock airbox, or the meter calculation will be off throughout the entire MAF code. Even locating the MAF meter in the wrong location will cause misread airflow, as was the case with the original LS7 airbox, during development.
One of the tricks, so to speak of the Halltech Killer Bee AAIS is about to be given away. Our bridge inserts the MAF meter far less into the airpath than stock. This helps airflow, since the protrusion of the MAF, is the only restrictive aspect of the MAF meter. How much does this matter? Our calculations show a 4% difference between measured airflow with our Killer Bee AAIS vs stock. The Killer Bee actually does slightly better job metering the airflow through our 103mm MAF housing than the stock bridge. Interestingly, we have calculated the area of measurement of the stock bridge (oval) vs. Halltech's MAF housing (circle) and found that the area is 4% smaller, increasing velocity at the MAF, and increasing actual airflow by this same factor due to the decreased protrusion of the sensor itself. Bigger is not better, since the measurement is the important job of the meter. The smaller the protrusion, the more airflow the engine will actually get.
The bottom line is there is only one MAF that can be used safely on the Z06, which does not require recalibrating the entire MAF code:
www.CorvetteLS7.com has a picture of the Hitachi MAF meter and the part number for reference on the lower left sidebar. They are under $100, and can be purchased from GM for installation in your stock AIS for hotswap situations if you have an aftermarket AIS.
Jim
Last edited by Halltech; 07-10-2007 at 08:10 AM.
aftermarket, airflow, c5, circle, corvette, delphi, filter, granatelli, high, ls7, maf, motorsports, oval, performance, problems, sensor, z06
