The MAF thread! Which one to purchase?
#1
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The MAF thread! Which one to purchase?
After some troubleshooing, I need a new MAF. After some TGO searching, I see the popular one is the Wells SU-145, which as been discontinued. I do not want an adjustable MAF.
So my options are:
-A new replacement Bosch (Wells SU-145) unit from http://www.wdautoparts.com/ ($182 with shipping). It says wells, but it is a Bosch in a Wells box since it has been discontinued.
-Micro Tech SENSOR MASS AIR FLOW (491018) unit from http://www.partsamerica.com/productd...pe=473&PTSet=A ($172.88). I believe this is the non adjustable MAF that is the closest to the Wells SU-145 according to Vader.
-Borg Warner Air Flow Meter / Mass Air Flow (25877M) unit from http://www.partsamerica.com/productd...pe=473&PTSet=A ($204.99).
-Standard Motor Products MAF Sensor (MF5877 ) unit from http://www.partsamerica.com/productd...pe=473&PTSet=A ($178.99)
Anyone have experience with these? I was thinking of going with the Micro Tech SENSOR MASS AIR FLOW (491018) since Vader said this is the closest to the Wells SU-145. I just want to make sure this is the non adjustable version. Which I believe it is because the Adjustable MicroTech is over $300.
So my options are:
-A new replacement Bosch (Wells SU-145) unit from http://www.wdautoparts.com/ ($182 with shipping). It says wells, but it is a Bosch in a Wells box since it has been discontinued.
-Micro Tech SENSOR MASS AIR FLOW (491018) unit from http://www.partsamerica.com/productd...pe=473&PTSet=A ($172.88). I believe this is the non adjustable MAF that is the closest to the Wells SU-145 according to Vader.
-Borg Warner Air Flow Meter / Mass Air Flow (25877M) unit from http://www.partsamerica.com/productd...pe=473&PTSet=A ($204.99).
-Standard Motor Products MAF Sensor (MF5877 ) unit from http://www.partsamerica.com/productd...pe=473&PTSet=A ($178.99)
Anyone have experience with these? I was thinking of going with the Micro Tech SENSOR MASS AIR FLOW (491018) since Vader said this is the closest to the Wells SU-145. I just want to make sure this is the non adjustable version. Which I believe it is because the Adjustable MicroTech is over $300.
Last edited by IROCThe5.7L; 05-20-2007 at 02:09 PM.
#2
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Re: The MAF thread! Which one to purchase?
why wouldnt u want adjustable if its only 100$ more than a stock replacement, im gona go with a grannelli high flow thats adjustable for 300$ from summit, will flow enough air for my future 500hp 383 and allows me to tune it. i would go with that, any reason why u wouldnt want the adjustable?
#3
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Re: The MAF thread! Which one to purchase?
Yes, I did some extensive searching before I made this thread. And it seemed a lot of people with a stock or close to stock engines had problems with adjustable MAF's. From bad idles, to throwing MAF codes. A few of those people switched to a non adjustable MAF and all their problems went away.
Last edited by IROCThe5.7L; 05-21-2007 at 08:55 AM.
#4
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Re: The MAF thread! Which one to purchase?
The Micro-Tech you're eyeballing should be NON-Adjustable. I picked up a used one from a member here a while back, and there's no adjustments to be made on it. They do have the circuit board in them like the Wells SU-145, instead of the wire filament the Bosch unit has. I haven't used mine yet, but I do like the idea of the circuit board vs. a wire after hearing from other people how delicate/fragile the wire setup is. For the price, and the circuit board technology, I'd say go with the Micro-Tech. I too have heard about guys having troubles with the Granatelli adjustable unit.
#5
Re: The MAF thread! Which one to purchase?
MicroTech 491018. It isn't just "close" to the old Wells unit, but is a carbon copy. For whatever reason, the Wells unit is no longer available with the thick-film TFT sensor, single flat metal matrix inlet screen,and larger I.D. body. The last one I installed was about five months ago and cost $168 and some pennies.
FWIW, if you need adjustment, do that in the program, and don't fool with the MAF output.
FWIW, if you need adjustment, do that in the program, and don't fool with the MAF output.
#6
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Re: The MAF thread! Which one to purchase?
Awesome! Thanks for the replies guys. Much appreciated.
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Re: The MAF thread! Which one to purchase?
Sorry to Hi jack the thread BUT How do you know when the MAF is faulty ?
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#8
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Re: The MAF thread! Which one to purchase?
I was having a hot start problem that went away when I unplugged the MAF. I put a known working one in, and the problem went away. That's how I knew the MAF was bad. Here's my other thread on it:
https://www.thirdgen.org/forums/tech...f-problem.html
#9
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Re: The MAF thread! Which one to purchase?
-Standard Motor Products MAF Sensor (MF5877 ) unit from http://www.partsamerica.com/productd...pe=473&PTSet=A ($178.99)
#10
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Re: The MAF thread! Which one to purchase?
[QUOTE=Vader;3347719]MicroTech 491018. It isn't just "close" to the old Wells unit, but is a carbon copy. For whatever reason, the Wells unit is no longer available with the thick-film TFT sensor, single flat metal matrix inlet screen,and larger I.D. body. The last one I installed was about five months ago and cost $168 and some pennies.
QUOTE] The Micro-Tech is the exact same thing. I read a post on here about a year ago where a member said that Micro-Tech supposedly had the patent rights to that particular sensor, so that's why Wells had to quit making them. How true that is, I couldn't say, but it makes sense.
QUOTE] The Micro-Tech is the exact same thing. I read a post on here about a year ago where a member said that Micro-Tech supposedly had the patent rights to that particular sensor, so that's why Wells had to quit making them. How true that is, I couldn't say, but it makes sense.
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Re: The MAF thread! Which one to purchase?
does anyone know what the difference between an 88 tpi system to a trans am tpi system, i did a swap from a 305 tpi to 350 trans am tpi and ive realized i need a new prom, i recently broke my MAF, is there anyway to elimate the MAF cuz im leaning towards buying the granelli which is 300 along with the bbk throttle body anther 300, would these 600 bucks make a significant difference in my horsepower are these mods worth my pockets being empty for a while.
#12
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Re: The MAF thread! Which one to purchase?
If both cars were the same year, there really shouldn't be any difference other than the prom. If both cars are MAF, the only way they would be any different is if the T/A was an 85 or an 89. 85 used a different ecm, and 89 didn't have the cold start, or 9th injector like the 85-88's. The only feasible way to eliminate your MAF sensor would be to convert to the 90-92 speed density system, which would require either re-pinning your existing harness, or getting a 90-92 harness, a 730 model ecm, and a 90-92 5.7 prom chip. Personally, I think it would be a BIG waste of 600 bucks to spend it on the Granatelli MAF, and a BBK TB. You probably wouldn't notice any difference at all by putting those on your car. The stock TB is probably good to about 400 HP or better, and as far as the MAF goes, the Micro-Tech unit mentioned in this thread is almost half the cost of the Granatelli, and probably works 10 times better. I had a guy rebuild my stock TB because the throttle shaft bores were worn out, and he enlarged it to 52 mm at the same time, and it only cost me about $145, which is half the cost of a BBK. Those parts will increase the "bling" factor of your engine, but will do absolutely nothing for a performance gain. Save your $600 for something that will actually make a difference in your power.
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Re: The MAF thread! Which one to purchase?
The Micro-Tech is the exact same thing. I read a post on here about a year ago where a member said that Micro-Tech supposedly had the patent rights to that particular sensor, so that's why Wells had to quit making them. How true that is, I couldn't say, but it makes sense.
http://www.micro-tech-auto.com/maf.html
And for its price, it would appear to be the MAF to get.
Edit: but I'm looking at the partsamerica website right now, and it says the Micro-Tech MAF is $230.99, not $172.88.
Last edited by LAFireboyd; 05-23-2007 at 05:19 PM. Reason: price
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Re: The MAF thread! Which one to purchase?
oopps i should read more lol it is 230 online but instore its still 173 get'em now
Last edited by redcamaro83; 06-06-2007 at 03:52 PM.
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Re: The MAF thread! Which one to purchase?
thanks pat 4 the advice, saved me a few hundred bucks i just kinda figured u add as many bolts ons as money will allow and they should make a difference, i figured i will go with the micro tech MAF since its receiving so much praise, i broke mines trying to dissamble it so i must buy a new one reardless so micro tech it is, neways where can i pick one up 4 the 170 price.
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Re: The MAF thread! Which one to purchase?
The partsamerica website is for Checker, Schuck's and Kragen auto parts stores. One of those should be in the area where you live.
#18
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Re: The MAF thread! Which one to purchase?
I went to Advanced Auto Parts and they told me I needed to order it online.
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Re: The MAF thread! Which one to purchase?
Does anyone know the best place to get a micro-tech? I will need to be able to get it shipped to Australia
#21
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Re: The MAF thread! Which one to purchase?
I am also considering this Micro-Tech MAF. My IROC wont run with the stock sensor plugged in, plus got a code 34 as well. Time for a new one.
My question is, with this new high tech circuit board MAF, does it still need to perform the burnoff function? You know, after you shut HOT engine off, runs that burn-off cycle to clean off the contaminents on the sensor wire?
Just curious about that....................
My question is, with this new high tech circuit board MAF, does it still need to perform the burnoff function? You know, after you shut HOT engine off, runs that burn-off cycle to clean off the contaminents on the sensor wire?
Just curious about that....................
#22
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Re: The MAF thread! Which one to purchase?
Yeah, since there's no actual burnoff function, the Micro-Tech has a deal built into the circuitry that tells the computer that the burnoff has been performed. I have to be honest though, it was a couple of years ago when I last replied to this thread, and at the time I was all stoked about the Micro-Tech MAF, but my opinion of them has changed. I've read posts on here from other members that have used one, and they said the calibration of it is a bit different from the OEM Bosch MAF, and that it can cause some issues with how the car runs, sometimes even causing the ecm to throw a MAF code. I personally can't chime in one way or the other since I bought a used, supposedly functioning Micro-Tech from a member here on the boards and the damn thing ended up being junk! It threw a MAF code as soon as I started the car. Luckily I had an original Bosch unit that came with a TPI setup I got from a running car, so I installed that one and my car runs perfect with it. So you might want to consider just getting a remanned Bosch unit instead of the Micro-Tech. It's too bad the Micro-Tech sensor didn't work out on mine because I liked the idea of the circuit card instead of the delicate wire on the original, not to mention they're supposed to flow better too. However, I'm running the original Bosch unit on a Super-Rammed, AFR-headed 355 and it seems to feed my motor just fine.
#23
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Re: The MAF thread! Which one to purchase?
Well, it's been around 3 years. Still no problems with my Microtech MAF (491018).
#24
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Re: The MAF thread! Which one to purchase?
Well I hope I did the right thing, since today just ordered the Micro-Tech from AAuto, will be here next day. Got it for $173. I did check out a new GM (Bosch?)one at local Chevy dealer, and they quoted me $800!!!! I like the idea of the new circuit board type.
Maybe you (Pat) got a bad one since it was used.
Also, I do my own chip programming, so i can make the MAF tables do whatever it takes to get it running right. Sounds like I might be in for some fun.
Maybe you (Pat) got a bad one since it was used.
Also, I do my own chip programming, so i can make the MAF tables do whatever it takes to get it running right. Sounds like I might be in for some fun.
#25
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Re: The MAF thread! Which one to purchase?
Oh yeah, that's why I said I really can't give a good testimonial on them. Since mine was used I basically got shafted by a dishonest seller. I got my fingers crossed for ya! Looks like Iroc the 5.7 has had really good luck with his Micro-Tech for the last 3 years too. Damn, if they quoted you 800 clams for a Bosch it must've been an OEM one! I've looked up remanned Boschs on Autozone's website and they're only about $125 from that A1 Cardone company. I might still be willing to give the Micro-Tech a shot. I'll just make sure to buy a NEW one with a warranty next time around!
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Re: The MAF thread! Which one to purchase?
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Re: The MAF thread! Which one to purchase?
A few years ago I hit the wrecking yard. 'F' and 'Y' body cars (mostly 'F's) were searched and $50 later I was off and running with a MAF. I had an 86 Vette then.
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#28
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Re: The MAF thread! Which one to purchase?
It just sucks when you have multiple things go wrong at the same time. but all are fixable.
On the MAF, i did see the reman Cardone unit as another option, and it was a bit less money. But it still is the old hot wire design. I am hoping this newer MicroTech gives me some improvement AND reliability.........
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