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It provides the end user with quick and easy adjustment of the air/fuel. A lot of people don't have access to chip burning and they could use some slight tweaking.
Since it is a 1 screw adjustment, it is a global change that is linear in nature and constant through the entire range of airflow. I purchased this prior to getting into tuning and do not have any use for it now that I have more control of what my car needs.
From the ad. ..
Get 47 percent more airflow than stock!
Granatelli offers these innovative mass airflow sensors as an upgrade for your stock one. The sensors feature state-of-the-art hybrid electronics, which provide improved ignition and injector timing control that results in a 10-15 hp gain at the rear tires. They're easy to install, and they're housed in a rugged, injection-molded body to reduce heat soak, which is a common problem with stock metal sensors.
But if you have it already, and they say it flows better, wouldnt you just keep it, its like saying you have a 2" exhaust but because your tune is better, you dont need that 3".
Deli sammich is up to something.
__________________ SuperStreet in the making...
SBC, Forged internals, 215cc aluminum heads, 90mm TB, .600+ lift cam, Long tube headers, 3.5" exhaust. 9" Procharger. Powered by megasquirt 2
lol, you're killin' me Travis. Just buy it and put it on your girls T/A already.
There is no secret, or aftermarket DFI. I'm using an OEM Bosch piece with a little custom work done to the screen/heatsink, no big. My car responded to it better after some testing/tuning.
The Granatelli does not physically have a bigger body as Vin said. It is stock measurements, has 1 screen only which is made of a less restrictive pattern, along with the modern electronics inside that could potentially provide better flow.
I own and use one. Usually with shipping and such they run closer to $350 from a REPUTABLE supplier. The reason for emphasising, is that all of these MAF's for our cars are expensive and none are foolproof even new. Occasionally people have to return one from all the different manufacturers; read the threads to vouch.
It is approx the same size as taking one of our factory units and descreening and shaving, as a starting point. If you port out your TPI systems and open up the intake box, you'll eventually be outflowing the factory screened unit.
No, there's no way to fine adjust an MAF without laying it out on a flow bench; however, if you do want to do the mega TPI porting and fine tuning before learning how to burn your own PROM chips this is perfect. Just be sure to change out the three MAF relays. I believe the Grantl. unit makes one of the relay''s 'moot' but why reinvent the system. There's no reason to use the old factory MAF's with their fragile fine wire internals anymore.
If you arn't very good at TPI diagnostics, I wouldn't recommend an adjustable; as it's too easy to end up chasing TPI Boggarts. Nitro
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Started IROC project in 2006 thinking to mimic a modern day stealth Mad Max's police Interceptor. Am attempting to maximize every possible cfm out of the TPI system. /Just replaced ENTIRE suspension with Spohn-Moog-UMI/ //Dying to learn PROM programing
Because I've fought & fought with issues dialing in my IROC for the past couple (4) years, I can sometimes make an educated guess. Possibly I bought the number one lemon camaro in California or the previous owner rolled the odometer back a couple hundred thousand miles or I'm just slowwwww to learn
So here's my best guesstimate on the running rich thing. MAF systems are much more forgiving of 'out of tuneness' issues when compared to Speed Density. Based on that, it's a wonder why our 3rd Gen site is layered with overly rich running V8's compared to other vehicles. I've read enough of your prior messages to know you're well aware that these early TPI computer OBD 1 systems are more co-dependant that Charles Manson's multiple personalities.
What I think you've been possibly running into is your system is initially reporting to your ECM that the engine is running lean; and as soon as it gets that signal it starts to dump large amounts of fuel into the system to compensate for that initial low idle signal. Does this sound possible?
I havn't been able to get my ECM to transmit the computer info correctly from my ALDL port, which is my current excuse for not having started in on PROM burning. What was suggested to me today by a lifetime GM mechanic is to go back to my factory PROM (I'm running a PCM's for less unit) and see what my sensors do afterwards. I can't remember when I had the PROM made if I had mentioned to the company that I was going to add in the mega-port plenum parts or not. Perhaps that initial hit of extra internal air could cause my ECM to think it's initially running lean. Let me know whatcha think, okay? Later, Nitro
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Started IROC project in 2006 thinking to mimic a modern day stealth Mad Max's police Interceptor. Am attempting to maximize every possible cfm out of the TPI system. /Just replaced ENTIRE suspension with Spohn-Moog-UMI/ //Dying to learn PROM programing
Does this part really make any real diff in the whole scheme of things -vs- a factory part?
I can honestly say that when I put one on my car there was definitely an improvement in performance. How much I can't say. Combined with the new Holley TB the engine seems so much more at ease and is truly a pleasure to drive. I think it breathing easier really helps a lot. Sorry I have no performance data to back that up. FWIW
__________________ Yours Aye! Rick ~^~^~^^~^~^~^~^~^~^~^~~^~^~~^~^~^^~~^~^
88 Firebird Formula 350- 85,XXX miles *G92* *Ws6*
