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Author Topic: Which air/fuel meter did you install?
Reggie Verified Driver
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Region: Delta
Car #: 77
Year : 1990
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I would like to know the brand, size and if possible, the model # of the a/f meter you installed in your spec miata. Thanks!

trimless1 Verified Driver Made Donation to Website
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Innovate Motorsports: http://www.innovatemotorsports.com/index.html

LC-1 with DC gauge. Good quality, easy install, and customer service was excellent.

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Gale Corley
99 SM GRE Super Deluxe
93 SM GRE Jr. Deluxe

Cajun Miata Man Verified Driver
Overdog Driver

Region: Houston; SWDIV
Car #: 15
Year : 99
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Same. Although the probe does burn out frequently.

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James York


sponsored by:
Stan's Auto Center, Lafayette LA
powered by:
East Street Racing, Memphis TN
set up guru:
Gilfus Racing, Austin TX

Muda Verified Driver Made Donation to Website
ComingToAMirrorNearYou

Region: WDC
Car #: #23
Year : 1991
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Common, cheap sensor.
Lasted a couple of seasons.
Bosch #17014. Advance Auto had the lowest price.
Picked one up for around $50 a few months ago.

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Muda Motorsports
"We're all here 'cause we're not all there."

Teamfour Verified Driver Made Donation to Website
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Year : 1993
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quote:
Originally posted by trimless1:
Innovate Motorsports: http://www.innovatemotorsports.com/index.html

LC-1 with DC gauge. Good quality, easy install, and customer service was excellent.

Yep, I have the same. I also tied it in to my Traqmate so I can graph the A/F ratio through out the entire race. That way I can see how flat the curve is and make adjustments accordingly.

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Lee Tilton
1993 Meowta #04
Brimtek Motorsports/ Team Four Racing
Team Four Racing

Gatoratty Verified Driver Made Donation to Website
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Year : 1992
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I installed LC-1 and hooked it up to my Traqmate, but the AEM looks good also.

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Paul McLester

Spence Gatrell
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Region: Oregon
Car #: 27
Year : 1991
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I use the LCU on my AIM system.

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When in doubt.. Stand on it!

B Wilson Verified Driver Series Champ
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Region: Oregon
Car #: 68
Year : 91
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^+1. Nice to to overlay all the data. Even though I have a lot of sensors, I really only look at speed and A/F data these days.

-bw

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Bruce Wilson
2010 Oregon Region Champ
2010 Monte Shelton Driver of the Year
2010 25 Hours of Thunderhill E3 and Under 2 liter Overall Champion
Oregon Region SM Class Advisor

kevin 22 Verified Driver
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Region: NYR
Car #: 22
Year : 1991
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Where do you install the O2 sensor?

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Kevin Anderson

Teamfour Verified Driver Made Donation to Website
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I welded a bung into the downpipe. Make sure you can get to the sensor because you will need to remove it from the bung and place it in clean air for calibration.

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Lee Tilton
1993 Meowta #04
Brimtek Motorsports/ Team Four Racing
Team Four Racing

Astro Verified Driver Made Donation to Website
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Car #: 87
Year : 1990
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I bought the AEM. http://www.aemelectronics.com/wideband-air-fuel-systems...deband-air-fuel-gauge-25/

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David Spencer
1990 Miata - #87 SM

KeithSE
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I have used the AEM unit on a different type of car for a couple of years now. I have had no issues with it and it is always within a tenth or two of what the dyno says. No calibration, just plug and play.

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Keith Andrews

B Wilson Verified Driver Series Champ
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quote:
Originally posted by kevin 22:
Where do you install the O2 sensor?

Or get a 1.8 downpipe.
Yes it is legal.

-bw

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Bruce Wilson
2010 Oregon Region Champ
2010 Monte Shelton Driver of the Year
2010 25 Hours of Thunderhill E3 and Under 2 liter Overall Champion
Oregon Region SM Class Advisor

Rich Verified Driver
Oh, that's where that is.

Region: STL
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quote:
Originally posted by Astro:
I bought the AEM. http://www.aemelectronics.com/wideband-air-fuel-systems...deband-air-fuel-gauge-25/

Me too. It had a serial port for datalogging though I never did hook it up to my DL-1 so I can't speak to how well it worked. I can say that it was very easy to read at a glance and reliable and was within about .1 of a tailpipe lambda used by my dyno operator. The probe had zero problems for two seasons and was still accurate when I sold the car.

We ordered a new downpipe from Mazda and I believe the OBDI pipe is superceded now? Because it had two bungs.

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Rich Wiese

Spec Wrecker Ford

cpdenis
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Region: 11
Car #: 09
Year : 99
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Great info. I'm looking to order the Aem as above.
1. Is their an extra bung on the 99 or do I need to weld one in?
2 Can this be later connected to a Traqmate and how is it done? Don't have the traqmate yet.

-Bob-
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I was looking around the AEM site and found this no weld O2 sensor mount. I thought a weld bung was the only solution available.

http://www.aemelectronics.com/no-weld-o2-sensor-mount-2-inch-660

kevin 22 Verified Driver
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Year : 1991
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forgive me for not really understanding.
The 1999 I am building has one bung in the downpipe which will be used for the stock O2 sensor. I will need to have another bung welded into the downpipe??? Do I just removed the shielding thats on the pipe around where it will be welded??? Does it matter how far down the pipe it goes ??? or how far from the other O2 sensor

Thanks

Kevin

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Kevin Anderson

-Bob-
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Kevin,

What my guy did for me was take a torch and cut a round hole in the shielding a tad larger than the weld bung. He then blew out a hole in the pipe large enough for the bung. Once welded in I can use it for a gauge or when dynoing the car. Mine is a few inches beyond the OEM point.

Maybe someone has good information on your other questions...Does it matter how far down the pipe it goes ??? or how far from the other O2 sensor?

Teamfour Verified Driver Made Donation to Website
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You want the sensor as close to the manifold as possible. Mine is just below the OEM bung. The new bung must be welded carefully. Even the slightest pinhole allowing air into the area will really mess up the reading. That is why I don't care for the clamp on mounts.

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Lee Tilton
1993 Meowta #04
Brimtek Motorsports/ Team Four Racing
Team Four Racing

cpdenis
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Year : 99
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Lee, did you use a straight or angled bung. I can only find a angled weld in type at the mythical flying horse auto parts. Any suggestions where to get a straight bung if needed?

[ 12-19-2010, 07:45 AM: Message edited by: cpdenis ]

Gatoratty Verified Driver Made Donation to Website
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My LC-1 came with a straight bung that I had welded into my downpipe just near the O2 bung..

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Paul McLester

Spence Gatrell
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I have a downpipe with two bungs.. Not sure where it came from

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When in doubt.. Stand on it!

KeithSE
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The AEM unit comes with a straight/standard O2 bung.

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Keith Andrews

B Wilson Verified Driver Series Champ
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quote:
Originally posted by Spence Gatrell:
I have a downpipe with two bungs.. Not sure where it came from

It's what you get when you order new from Mazda.

-bw

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Bruce Wilson
2010 Oregon Region Champ
2010 Monte Shelton Driver of the Year
2010 25 Hours of Thunderhill E3 and Under 2 liter Overall Champion
Oregon Region SM Class Advisor

Teamfour Verified Driver Made Donation to Website
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quote:
Originally posted by cpdenis:
Lee, did you use a straight or angled bung. I can only find a angled weld in type at the mythical flying horse auto parts. Any suggestions where to get a straight bung if needed?

Like gatoratty said, the LC-1 should come with a straight bung.

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Lee Tilton
1993 Meowta #04
Brimtek Motorsports/ Team Four Racing
Team Four Racing

   

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