Granatelli MAF. Really work?
Thread Starter
Le Mans Master
Joined: Dec 2003
Posts: 7,457
Likes: 144
From: NC
Granatelli MAF. Really work?
See this ad on Ebay:
http://cgi.ebay.com/ebaymotors/ws/eB...925659640&rd=1
Are these the real deal? Summit sells them for $329 so I am wondering if this person can really sell them this cheap. Also, does anyone here have one on their car? Did you notice a difference? Any mystery Check Engine lights or anything like that?
http://cgi.ebay.com/ebaymotors/ws/eB...925659640&rd=1
Are these the real deal? Summit sells them for $329 so I am wondering if this person can really sell them this cheap. Also, does anyone here have one on their car? Did you notice a difference? Any mystery Check Engine lights or anything like that?
Team Owner
Joined: Mar 2001
Posts: 21,325
Likes: 3,841
From: small town in S.E Pa. PA
St. Jude Donor '03-'04
save your money... this guy must have got hold of the thousands that were sent back because they, in most cases, gave negative increases in HP gains..There are plenty of Dyno numbers posted on this forum before and after.. most showed Zero or negative increase..
Last edited by Evil-Twin; Oct 5, 2004 at 09:08 AM.
Heel & Toe
Joined: Mar 2004
Posts: 20
Likes: 0
From: Houston Tx
Just for fun, I bought one of the Granatelli MAF's for my 04 M6 Coupe. The part # was 350119-C for cold air tuning (I also have a Blackwing). I know that most of the opinions on the forum is that this MAF does little or no good, however, I did see a noticable increase in power at low rpms (2000-3000). I have never had a error code. Maybe I got one of them that actually works........
Pro
Joined: Oct 2003
Posts: 583
Likes: 40
From: Sacramento
I used to have one and it definetely worked as far as I am concerned. Most people who are saying it doesn't work were adding it to a car that has already been tuned. The Granatelli works on stock cars. Once you get to the point where you are doing dyno tuning you might as well take it off and sell it. When I added the Granatelli MAF, LS-6 manifold and a GHL exhaust I took nearly a half second off my 0-60 times. Once I modded a bit further I sold the MAF and dyno tuned.
I have had more than one reputable tuner tell me that in the circumstances described above they do work.
I sold mine a few weeks ago on ebay for $200. I would of offered it here but didn't feel like getting flamed by people who had never even tried one.
I have had more than one reputable tuner tell me that in the circumstances described above they do work.
I sold mine a few weeks ago on ebay for $200. I would of offered it here but didn't feel like getting flamed by people who had never even tried one.
Racer
Joined: Dec 2003
Posts: 300
Likes: 0
From: Oklahoma City
Put one on my car after my Halltek Stinger. There most def was a noticable difference in the performance. I picked mine up for $85 on here. Was def worth the money, but i don't think it would be for $350-$400.
Melting Slicks
Joined: Aug 2003
Posts: 3,306
Likes: 5
Theres only one way to know for sure if its going to give you any gains. TRY IT. It doesn't matter what the product is, some people are going to say its good, some will say its bad. I found out that you have to just try things for yourself sometimes. Good luck. Hope it works out for you.
Drifting
Joined: Jul 2002
Posts: 1,613
Likes: 0
From: Spring Tx
All it does is lean out your mixture. There have been quality issues since day one. Some work, most don't.You can do the same thing with ls1edit.I've been on this board more than two years and I would say failures outnumbered successes five to one.
Instructor
Joined: Jun 2004
Posts: 120
Likes: 0
Originally Posted by lost
All it does is lean out your mixture. There have been quality issues since day one. Some work, most don't.You can do the same thing with ls1edit.I've been on this board more than two years and I would say failures outnumbered successes five to one.
When I installed mine, it gave me tons of lean error codes (both right and left side), bogged my engine down at low rpms and speeds, and made my engine ping and knock like crazy. I took it off and re-installed my stock MAF and all of the problems went away.
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Team Owner
Joined: Mar 1999
Posts: 28,753
Likes: 9
From: San Jose/Bear Valley CA
CA Events Coordinator
What I did with my GMAF was install it and run the car for a few months. Then run traces to see how it actually worked on the car. We found that it actually hurt performance. So it was removed and not used since. IMO, that is the best way to find out if it works for your car or not.
VR
VR
Thread Starter
Le Mans Master
Joined: Dec 2003
Posts: 7,457
Likes: 144
From: NC
Well, this is all great info. I guess if I ever see one cheap I will pick it up and see how it works on mine. Gotta love this forum, I was just about sold on them through their marketing. Thanks.
Supporting Vendor
Joined: Oct 2002
Posts: 50,281
Likes: 518
From: Cleveland OH
St. Jude Donor '11,'13
i have a wcc ported maf on my 2000 a4 car.was tunned with ls1 edit. i read that it mess your shift point up for a a4. im going to put the stock one back in and retune the whole car and see what happens. on the other hand my brother has the same car with the same bolt ons and it didnt seem to hurt him. he put :***** 350.1 rwhp down on the same dyno same day i only did 344.7 rwhp
Pro
Joined: Oct 2003
Posts: 548
Likes: 27
From: Port Charlotte, FL.
I installed one on my 97 and from day one had the following;
Ran way to lean and there was a constant ping going through the gears, etc..
Continuous service engine light - on all the time
Didn't have a problem before and haven't had one since - Save your money.
End of story.
Ran way to lean and there was a constant ping going through the gears, etc..
Continuous service engine light - on all the time
Didn't have a problem before and haven't had one since - Save your money.
End of story.
Pro
Joined: Jun 2004
Posts: 560
Likes: 0
From: Prattville AL
Im more familiar with them on the Fbodies than C5s, but I am sure they are a lot alike. I guess its like some people said, some cars like them, some do not. I talked with James from RunninWithTheDevil (Predator dealer) and he told me that when you mess with your MAF it makes your car diffiuclt to tune and I guess thats where you can lose power.
Instructor
Joined: Jun 2004
Posts: 120
Likes: 0
Originally Posted by cerino2000
Gotta love this forum, I was just about sold on them through their marketing. Thanks.
Racer
Joined: Dec 2003
Posts: 300
Likes: 0
From: Oklahoma City
First couple days mine worked fine, then yesterday it decided it didn't like the new MAFS anymore. Looked up the codes, sure enough.... running lean. I know my Camaro didn't have that problem... WTF!?!
Also now my coolant temperature is running high... around 228 when sitting still and about 208 while driving. quite a bit above normal for a 68F day. Wonder if they are related?
Also now my coolant temperature is running high... around 228 when sitting still and about 208 while driving. quite a bit above normal for a 68F day. Wonder if they are related?
Tech Contributor
Joined: Oct 1999
Posts: 41,037
Likes: 9,799
From: Charlotte, NC (formerly Endicott, NY)
Lean mixture runs hotter. A good reason to be careful when leaning the mixture to gain a couple horsepower if you are doing wide open throttle runs for 20 to 30 minutes at open track events.
Bill
Bill
Melting Slicks
Joined: Feb 2002
Posts: 2,148
Likes: 1
From: GA
I've had one on my car for about four months now. No problems whatsoever. I don't get to drive hard very often so can't really say with any affinity whether or not it made a difference. Again, I second the notion that they are asking way to much for them. Look for a used one for less and try it. That way, if your car has issues with it, you've not risked as much...
Safety Car
Joined: Jul 2004
Posts: 3,904
Likes: 29
From: Vancouver Washington
If you do get one make sure its the - C model for cold air intakes. The new ones have screens (I've heard the old ones didn't) Also, take the time to run through the relearning process that was posted here somewhere. You pull two fuses, turn the car on and off and then replace the fuses and go out for a 50 minute drive. Seems to work or at least I didn't get any codes.
Le Mans Master
Joined: Sep 2004
Posts: 7,027
Likes: 6
From: Shiloh Ohio
Test run G MAS
Hi, I am going to the track friday night, just happens my most recent mod is a GMAS and a high air flow bridge. I have the new one with cold air function and the screen. Should be close to the same temps I ran in the spring so if I beat a 12.81 with me or a 12.71 with my smaller cousin driving i would say it works. I will let you know Friday night when I get home.
