AEM Ems -- Speed Density

[TheBoz]

So here is my question, can you convert to speed density just by using the AEM Ems. Is there anyother stuff you need.

Thanks

 

[GVR4592]

Aem ems, 2g knock sensor, map sensor, air intake temp sensor, and wideband.

 

[LilBeanTSI]

A wideband is not necessary to convert to speed density.

 

[GVR4592]

A wideband is neccesary to use AEM Ems.

 

[laggin3]

As well as any form of tuning.

 

[talondsp1]

Aem ems, 2g knock sensor, map sensor, air intake temp sensor, and wideband.

I am about to get an aem ems, and i want to make it speed density. Does the map sensor, air intake sensor and wideband have to be aem brand? or can i use my 3 bar gm map sensor? can you choose different brand sensors on it, or at least change the settings so it will work with any sensor? Thanks for any info.

 

[1SloColt]

A wideband is neccesary to use AEM Ems.

It is not necessary to have a wideband in order to run the AEM, stop posting bad info. A wideband is definitely a good tool to have for great tuning but it is not necessary.

 

[GVR4592]

You cant do ANY fuel tuning with the AEM without a wideband. The AEM EMS is not capable of reading the stock narrowband sensor. So that means you are completely screwed when it comes to any sort of fuel tuning. How do you get a good idle, cruise, or wot A/F ratio if you don't know the A/F ratio???

 

[1SloColt]

You cant do ANY fuel tuning with the AEM without a wideband. The AEM EMS is not capable of reading the stock narrowband sensor. So that means you are completely screwed when it comes to any sort of fuel tuning. How do you get a good idle, cruise, or wot A/F ratio if you don't know the A/F ratio???

It'll tell you where you are in relation to stoich, . But you didn't say you need it for a good tune, you claimed it was necessary to have in order to run the AEM, in which case it isn't. Like I stated in my above post, its a good tool to have to get the car tuned well. But you are right that it doesn't tell you squat using the stock O2, tells you whether the car is richer than 14.7, at 14.7, or more lean than 14.7. I could get it to idle properly

 

[hostile]

On a mas system you know exactly how much air the engine is taking in, with speed density the amount of fuel injected is caluclated from air temp, pressure and the VE of your engine.


I don't know anyone who owns an AEM running speed density without a wideband.

 

[GVR4592]

It'll tell you where you are in relation to stoich, . But you didn't say you need it for a good tune, you claimed it was necessary to have in order to run the AEM, in which case it isn't. Like I stated in my above post, its a good tool to have to get the car tuned well. But you are right that it doesn't tell you squat using the stock O2, tells you whether the car is richer than 14.7, at 14.7, or more lean than 14.7. I could get it to idle properly

Look at my vehicle profile, do you think I'm talking out my ass? You need a wideband to run AEM, without it the car wouldn't leave the driveway. There is more to getting a good idle then just adding or removing fuel in the main fuel map. There are a few idle fuel trims and other settings, and very small changes can swing the A/F a large amount. You wouldn't know where to start without knowing the A/F ratio.

 

[hairybeanbag]

Look at my vehicle profile, do you think I'm talking out my ass? You need a wideband to run AEM, without it the car wouldn't leave the driveway. There is more to getting a good idle then just adding or removing fuel in the main fuel map. There are a few idle fuel trims and other settings, and very small changes can swing the A/F a large amount. You wouldn't know where to start without knowing the A/F ratio.

my car leaves my driveway, without a wideband.

 

[GVR4592]

Ok let me rephrase that, that statement is not correct. You shouldn't leave the driveway without a wideband when you are initally setting up the AEM, unless you are going to a very nearby tuner. If you can get it to run well enough to get there.

I have set up a few cars with AEM and I've seen AEM trained tuners set up cars with AEM. I've never seen a car start just by uploading a basemap to the ECU. It always takes tweaking. Most times you can't just upload the basemap and go cruising. The car either bogs or bucks under acceleration, and sometimes won't stay running when you come to a stop, without some fuel tuning. This obvisouly doesn't apply to every car and every situation, but in my experience it has been true in all cases.

If you know of a way to tune the A/F using the AEM Ems without a wideband please let me and other tuners know so we can stop wasting our money on widebands.

 

[tstkl]

On a mas system you know exactly how much air the engine is taking in, with speed density the amount of fuel injected is caluclated from air temp, pressure and the VE of your engine.


I don't know anyone who owns an AEM running speed density without a wideband.

thats because thats the SMART thing to do. thats like saying, I dont know any fast dsm's that are not turbo'ed. a non turbo dsm can be made fast, but its so much easier to make a turbo dsm fast.

 

[hairybeanbag]

Ok let me rephrase that, that statement is not correct. You shouldn't leave the driveway without a wideband when you are initally setting up the AEM, unless you are going to a very nearby tuner. If you can get it to run well enough to get there.

I have set up a few cars with AEM and I've seen AEM trained tuners set up cars with AEM. I've never seen a car start just by uploading a basemap to the ECU. It always takes tweaking. Most times you can't just upload the basemap and go cruising. The car either bogs or bucks under acceleration, and sometimes won't stay running when you come to a stop, without some fuel tuning. This obvisouly doesn't apply to every car and every situation, but in my experience it has been true in all cases.

If you know of a way to tune the A/F using the AEM Ems without a wideband please let me and other tuners know so we can stop wasting our money on widebands.

I tune my car on a dynodynamics dyno, it's a load holding so you can tune more than just WOT like a dyno jet etc. Being able to build your maps with off boost driving conditions, and simulating hills really helpfull with drivability. plus it's safer than driving around with your laptop in your lap. I have never needed to chang anything on the street even with my AEM wideband!!

 

[DSM PERFORMANCE]

Is it possible to be daily driven with EMS with air speed density once it's well tuned, without retuning unless mod are added ?

 

[4WARND]

my car leaves my driveway, without a wideband.

So does mine. Although it is on the list of parts I am adding soon.

 

[hairybeanbag]

Is it possible to be daily driven with EMS with air speed density once it's well tuned, without retuning unless mod are added ?

go to horsepowerfreaks.com and read some of the AEM testimonials and watch their little vidio. If you have a good tuner your car will run better than the stock ecu.

Piggybacks are almost as ### as the beachboys.

 

[GVR4592]

So does mine. Although it is on the list of parts I am adding soon.

So are you guys saying you did your tuning without widebands?

 

[LilBeanTSI]

If you know of a way to tune the A/F using the AEM Ems without a wideband please let me and other tuners know so we can stop wasting our money on widebands.

Correct you need a wideband to tune the car but it is not neccassary to make the AEM run. That is why you get the car tuned on a dyno that has a wideband. Once its tuned thats it, you dont need to touch it again until you get something else done. Would having a wideband in the car be better, of course this way you can constantly see what your afr's are and make changes at the track if need be. It would be a nice LUXURY, but it is not a neccesity. And i'm sure they had their cars tuned using a wideband and they just don't run one in the car.

 

[laggin3]

Correct you need a wideband to tune the car but it is not neccassary to make the AEM run. That is why you get the car tuned on a dyno that has a wideband.

Are you kidding me? Regardless of whether or not you PERSONALLY have a WB, you need one to get any kind of a REAL tune out af an AEM. I still havent seen anyone post how they got to their current dyno numbers without using a WB. Yes you can get the car started and running halfass, but it is without a doubt, required to get a good tune out of your car.

 

[Mark90gst]

you dont NEED a wideband, It RECCOMMENED, if you have any AEM EMS questions go here

www.aempower.com

go into the electionic forum and go under the 30-1300 box=dsm forum, post there,

You can you many different sensors with the aem, download the firmware it is FREE, read all 217 pages of the manual , the 27 PAGE users guide and AEM FUEL TUNING MANUAL, before you condiser buying the aem,
the stock aem ems maps for the 1g DSM are very good, as long as you do all the changes correctly, my car starts super fast, never fouls plugs, and is awsome with the aem

I have a aem wideband, which is cool for auto tune

 

[LilBeanTSI]

Are you kidding me? Regardless of whether or not you PERSONALLY have a WB, you need one to get any kind of a REAL tune out af an AEM. I still havent seen anyone post how they got to their current dyno numbers without using a WB. Yes you can get the car started and running halfass, but it is without a doubt, required to get a good tune out of your car.

Right, you obviosuly misunderstood my statement. A wideband is required to get a good tune out of the car, but once the car is tuned you don't need a wideband for the AEM to function. Obviosuly people are using widebands to tune their cars, but once the car is tuned you no longer need the wideband. Which is why I said you can get the AEM installed at a shop and tuned on a dyno with it's own wideband. AEM is plug and play for a reason, it can use ALL the stock sensors.

 

[HighPSI TSi Guy]

I am about to get an aem ems, and i want to make it speed density. Does the map sensor, air intake sensor and wideband have to be aem brand? or can i use my 3 bar gm map sensor? can you choose different brand sensors on it, or at least change the settings so it will work with any sensor? Thanks for any info.

If you dont know the answers to those questions, you might want to cancel your order.

 

[GVR4592]

You guys thaat say the wideband is reccomended but not needed, have you tuned any standalone systems? And when you say that its reccomended but not needed, are you saying that it's not needed ever or it's just needed during the tuning process?