Ok im a kind of newbie when it come to electronics, some people are good in sports, school etc but everyone have their quality...

Anyway I find that the temperature really affect my AF ratio on my car and here in Montreal the temperature is really not stable and can vary of 30 degree really easily. Sometimes my idle is really nice and sometimes you can feel that it would need an adjustement on the air/fuel.

I have a ,wide band PLX M250 on my racing car that I can see the air/fuel ratio on the steering display and after a session we adjust the carburator ( Formula Ford 1600 ) and its a really reliable wideband cuz I used it a whole racing season without any problem... session after session it was reading fine.

Its a fairly cheap product, my question is, is there anyway that my AEM EMS could run this wide band every day and do the adjustement if necessary ?? Im talking about something that I dont even know if its possible... usually the wide band is only used on the dyno...

tell me what are my possibility ?




Modified by yellowturbo at 2:24 PM 4/18/2005

 

I'm not sure if the SEM could do the adjustments automatically or very easily at that.

I can agreee with you on the A/F changing. I have 2 tunes. One for winter and one for summer. In any case yes you can run your wideband everyday. I have the PLX m-300 and the sensor they use are on stock Volvos and VW's anyway so they will last a long time on unleaded gas.

Someone may chime in on the AEM part of your question

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by adseguy &raquo;</TD></TR><TR><TD CLASS="quote">I'm not sure if the SEM could do the adjustments automatically or very easily at that.

I can agreee with you on the A/F changing. I have 2 tunes. One for winter and one for summer. In any case yes you can run your wideband everyday. I have the PLX m-300 and the sensor they use are on stock Volvos and VW's anyway so they will last a long time on unleaded gas.

Someone may chime in on the AEM part of your question</TD></TR></TABLE>

well I only drive my car in the summer but here sometimes in spring its like 2 degree celcius but later in the summer it can be 30 degree celcius...

just a question what is the purpose of running a wb in your car ? is it just to see if everything is okay ?

 

damn canadians and their celcius

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by m R g S r &raquo;</TD></TR><TR><TD CLASS="quote">damn canadians and their celcius </TD></TR></TABLE>

lol yeah and I like centimeters !

sorry Im really not used to farheneit ...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by yellowturbo &raquo;</TD></TR><TR><TD CLASS="quote">
Its a fairly cheap product, my question is, is there anyway that my AEM EMS could run this wide band every day and do the adjustement if necessary ?? Im talking about something that I dont even know if its possible... usually the wide band is only used on the dyno...

tell me what are my possibility ?

Modified by yellowturbo at 2:24 PM 4/18/2005</TD></TR></TABLE>

Yes you can do this, I run mine like this everyday. I am using the TechEdge, but basically the samething. you can fill in the table on the O2 sensor feedback, and tell the exact a/f you want at every load/rpm. my tuning is so close I dont need it right now, but when I go on road trips I turn it on and set it leaner(15-16:1 in low load) and get close to 40mpg on a 12 sec car.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by salt &raquo;</TD></TR><TR><TD CLASS="quote">

Yes you can do this, I run mine like this everyday. I am using the TechEdge, but basically the samething. you can fill in the table on the O2 sensor feedback, and tell the exact a/f you want at every load/rpm. my tuning is so close I dont need it right now, but when I go on road trips I turn it on and set it leaner(15-16:1 in low load) and get close to 40mpg on a 12 sec car.</TD></TR></TABLE>

damn this would be nice... now my car is tuned so I could do what you explain to me and get a well tuned car every day right ?

Is it a close loop setup ?

 

Yes, not running a WB all the time is something I would have trouble doing. Having all the time a precise reading of the A/F is priceless.

That way you won't have any excuses about that your tune wasn't right after leaving you in the dust

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Civic TSI &raquo;</TD></TR><TR><TD CLASS="quote">Yes, not running a WB all the time is something I would have trouble doing. Having all the time a precise reading of the A/F is priceless.

That way you won't have any excuses about that your tune wasn't right after leaving you in the dust </TD></TR></TABLE>

bla bla bla.........

 

I went ahead and purchased myself an AEM wideband, guage type, for my car. My main reason for getting one was to be absolutely sure nothing messes up with my setup. More for precautionary purposes on my end. Gives me peace of mind.

My Honda is also a daily driver, and the odd weekend warrior too.

 

as far as getting a good idle and cruising afr in different temps what you can do is set the wideband up so it will feed your ecu the narrowband signal so it will make adjustments just like your stock o2 does. This way when the temp changes your o2 sensor will make corrections for you. As for getting it to automatically adjust in open loop you will need to be using some sort of an ems that has automatic iat adjustments for temperature changes. I wish uberdata had auto iat adjustments

 

I run my AEM wideband daily driven, no problems. There is a feedback feature will change your fuel map a set % relative to what it should be.

I dont use this feature, but I'm sure there are new updates because im still running one of the original version 1.03. AEM EMS Forum has pissed me off, so I steer clear.

 

damn thanks for all those constructive reply !

keep them coming !

oh btw my stock 02 sensor is dead due to racing fuel but my tuner told me that it wouldnt change anything for now.... and if I want something really precise I should get a WB.

 

3 Celsius is about 38 Fahrenheit

30 Celsius is about 86 Fahrenheit

The AEM has an automatic correction table for air temperatures, unlike Hondata. If you set this up your car should run the same on a 3 degree day as it does a 30 degree day.

Fuel -- &lt;&lt;Advanced Fuel&gt;&gt; -- Fuel Trims -- Air Temp Fuel Corr Table

You can also have it compensate for Barometric pressure, boost, as well as EGT's, which is a great thing to have for a street car.

 

yes a wideband will give you a little bit more accurate narrowband signal. All you need to do is feed the signal from your wideband controller into your o2 sensor input on the ecu harness.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SOHC_MShue &raquo;</TD></TR><TR><TD CLASS="quote">yes a wideband will give you a little bit more accurate narrowband signal. All you need to do is feed the signal from your wideband controller into your o2 sensor input on the ecu harness. </TD></TR></TABLE>

Widebands signal is a lot more accurate, its also simply spread out a little wider to give you a little bit more accuracy. The sensor itself is able to get more accurate readings than any of the narrow bands.