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03-09-2007, 04:40 PM
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Hummer Authority
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Join Date: Sep 2005
Location: Texas
Posts: 1,795
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Re: High Performance MAF Sensor
At the MossH2 price, I would do it for sure! It "will" help some. I like mine and paid the retail price for it
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03-09-2007, 04:57 PM
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Hummer Professional
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Join Date: May 2005
Location: Indio, California
Posts: 465
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Re: High Performance MAF Sensor
i noticed a little improvement with my Granatelli MAF sensor and Airaid intake but no huge power gains...just enough for you to notice better acceleration
__________________
2003 Hummer H2 LUX...sold
2006 Hummer H2 SUT LUX...sold
2018 Polaris GEM e4
2022 Can-Am Maverick X3 XRS Turbo RR
2024 Rivian R1S Adventure
2024 GMC Sierra AT4X HD
2024 GMC Hummer EV 2X SUV
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03-10-2007, 02:34 AM
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Hummer Veteran
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Join Date: May 2004
Location: Lighthouse Point Florida
Posts: 175
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Re: High Performance MAF Sensor
 I run the gran. MAF and a factory match air raid filter and noticed a nice bump in performance. I also run the hypertech. I did not want the open intake with all the florida mud and rain so I kept the factory filter box.
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2004 Lux with 6 inch Fabtech with tie rods, 38 inch MT's, 4:88 gears, and some minor engine tweaks.
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03-10-2007, 05:34 AM
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Hummer Authority
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Join Date: Nov 2004
Location: Little Rock, Arkansas
Posts: 1,784
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Re: High Performance MAF Sensor
Screeper I think You are smart staying with the factory box. It was designed to keep water out of intake. Anyone that off roads much I feel would be protecting their engine by using the factory box with a better filter like You are using.
The Gran MAF if it is the bench set tuned to cold air intake may help throttle response some but, so will a vortex throttle body spacer that i ran and kept it even with SC on my H2. Most people think they are worthless but, they will improve throttle responce. So in that respect they both will do that. The spacer is just about $150 less than the regular pricing of the Gran MAF. Just based on my experience with a Gran since summer of 1999 i wish i had gone with the throttle body spacer on the 5.3L than the almost double the cost of Gran MAF. The price that the Gran is being offered at Moss I would give it more thought. Even if it just peps up the throttle response just a little it may be worth it for that price.
__________________
05 H2 SUV cus. paint, Magnuson SC 6/12lb boost, cowl hood scoop, 12" dash touchscreen, GM elec. fans, HPTuners.com tuning soft., Dynatech headers dual catback exhaust Jet Hot chrome front to back Flowmaster Super 40's, Diamo 8 Karat rims & 325X60-20" Toyo, 4 OEM Captain seats Katzkins leather, rear console computer inside running all AV/NAV etc., Infinity component system 3 amps Tsunami Caps, rear flip down 12" monitor, headrest monitors, overhead console boost, fuel pressure, & A/F ratio gauges
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03-10-2007, 06:32 AM
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Hummer Professional
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Join Date: May 2005
Location: Indio, California
Posts: 465
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Re: High Performance MAF Sensor
Quote:
Originally Posted by HUMMERcustoms.com/TAZ
Screeper I think You are smart staying with the factory box. It was designed to keep water out of intake. Anyone that off roads much I feel would be protecting their engine by using the factory box with a better filter like You are using.
The Gran MAF if it is the bench set tuned to cold air intake may help throttle response some but, so will a vortex throttle body spacer that i ran and kept it even with SC on my H2. Most people think they are worthless but, they will improve throttle responce. So in that respect they both will do that. The spacer is just about $150 less than the regular pricing of the Gran MAF. Just based on my experience with a Gran since summer of 1999 i wish i had gone with the throttle body spacer on the 5.3L than the almost double the cost of Gran MAF. The price that the Gran is being offered at Moss I would give it more thought. Even if it just peps up the throttle response just a little it may be worth it for that price.
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will the throttle body spacer do any good if you already have the granatelli MAF?
__________________
2003 Hummer H2 LUX...sold
2006 Hummer H2 SUT LUX...sold
2018 Polaris GEM e4
2022 Can-Am Maverick X3 XRS Turbo RR
2024 Rivian R1S Adventure
2024 GMC Sierra AT4X HD
2024 GMC Hummer EV 2X SUV
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03-10-2007, 12:42 PM
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Hummer Authority
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Join Date: Nov 2004
Location: Little Rock, Arkansas
Posts: 1,784
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Re: High Performance MAF Sensor
Raven
It does not hurt and the spacer I choose to run is the "Helix Power Tower" by Enhanced Performance Products. The Gran is designed, if You buy the cold air calibrated version, is to try and help get a better balance of fuel and oxygen. It should give You a feel of sharper throttle response. The wideband tuning I'm messing with takes care of all that so I will run the stock MAF till it is time to let the tuning software take over for the MAF.
As I mentioned and have been told by several tuning specialist that if you are going up in boost the factory MAF will work until about 10lbs. of boost so the OEM MAF is no bum piece of equipment. That is the only reason I have not put a Gran MAF on, otherwise a Gran would be on my rig. I will be removing the MAF in boost at some point so no need to spend the money.
The Helix Power Tower is designed for optimum fuel/air mix which the Gran MAF is calibrated to help improve the amounts. The spacer seemed if anything to help the low end which is done by speeding the air flow up and getting the air to spiral more to improve the mix and how fast it gets the blend done before it all gets into the cylinder causing a more powerful firing etc.
I do not see any reason why they should not compliment each other, especially in a non boost situation. I would pick the spacer if forced to choose between the 2 but, since You have the Gran MAF I would not hold back in using the spacer. Each part of the puzzle You can put together is going to all add up at some point to maximize the efficiency of Your engine. Just as with a stock setup I would not hesitate to add MSD coil packs and Taylor wires to maximize the power of the spark to make for a more efficient burn as I can get. The handheld tuner then has it's place in the puzzle as well.
There are allot of add-ons that I have tried before going to SC that when all done together got my rig to run really nice. I got a Magnuson sponsored so I moved into the boost world, plus it looks good for shows. Most of these add-ons have been mentioned in this forum by many. If You would like to PM me I would be glad to try and do my best to give an honest assessment of what you have done and what you may want to do more. No secrets or anything it is just better to discuss Your needs in specific rather than make suggestions in a generalization. The add-ons would come to a more reasonable cost than going to boost and all that goes with tuning for it plus all the gauges You should have to monitor what is going on. Each of us must do what they feel is best for ourself. So I would research others ideas that should be able to be found in a search. Maybe just Google the non boost performance opinions that are all over the net.
Hopefully i have been helpful Raven. If I have confused things rather than clear it up please ask so i do not get You going off into the wrong direction.
TAZ
__________________
05 H2 SUV cus. paint, Magnuson SC 6/12lb boost, cowl hood scoop, 12" dash touchscreen, GM elec. fans, HPTuners.com tuning soft., Dynatech headers dual catback exhaust Jet Hot chrome front to back Flowmaster Super 40's, Diamo 8 Karat rims & 325X60-20" Toyo, 4 OEM Captain seats Katzkins leather, rear console computer inside running all AV/NAV etc., Infinity component system 3 amps Tsunami Caps, rear flip down 12" monitor, headrest monitors, overhead console boost, fuel pressure, & A/F ratio gauges
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03-10-2007, 04:12 PM
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Hummer Authority
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Join Date: Sep 2005
Location: Texas
Posts: 1,795
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Re: High Performance MAF Sensor
Hay Taz, you know we tend to mostly agree. However, usually those spacers or twirly things will actually slow down the max flow being allowed to enter the TB. They are for low end, and hurt the top end. It's best to leave them out if you are trying to increase flow rates. They do work well on stock intake where you are trying to only pickup the low end some.
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