Hey guys,


I was told that if I install an AEM Infinity, I won't be able to read air fuel ratios through the AEM guage, the only way would be to log. Just wanted to know if this is true or not.


Thanks guys

 

Negative you can get a serial gauge that hooks up to the infinity that monitors like 23 different things if you so choose. I have one in my evo

 

Ya that is not true and someone may have given wrong info;

With the Infinity unit, you can directly connect it to the O2 sensor via their special harness. Then you can view a physical display through your computer and see your AFR/Lambda. However, if you connect this O2 sensor to a gauge, then you can see the AFR/Lambda without the need for the laptop. If you already have a gauges installed in the vehicle, and you added Infinity afterward, then unless you disconnect the O2 sensor from the gauge, you should still be able to read off the gauge.
Hope this make sense?


https://www.evolutionm.net/forums/sa...-fuel-iat.html

 

Your knock sensor won't work properly if at all.

 

What? If you're going to post false info at least try to back it up.

 

It's not false information. For whatever reason the Infinity cannot properly detect knock on an Evo 8 when using the stock 2-tooth crank trigger plate. Knock detection works fine after switching to a 12-tooth crank trigger plate.

http://aemelectronics.com/?q=forum/d...nsor-going-out

 

It's false when you make a comment with no context or explanation. Which is all he ever does. Anyone who puts an EMS on their car should really be doing the 12 tooth trigger anyways.

 

Changing the trigger wheel on the crank will only increase the resolution of the noise detected.... since it is only recorded within few degrees of firing, that's all!

I don't think the OP had asked about the knock sensor, his question was more toward the AFR/Lambda. And if the knock noise floors calibrated well..... I mean using proper Det-cans to confirm, then it will work just fine.

 

It's got nothing to do with the trigger wheel.
Det cans don't work either but it's nice to convince yourself that they do.

The evo like all of the older Mitsubishi knock sensors is a resonant type which outputs one frequency and only one frequency, the voltage level of which is proportional to the knock intensity.
Toyota also use resonant knock sensors as do GM. and many others. But not in all models and the tuned frequencies are different.
Subaru don't.


Tooners should all know this?
Otherwise they're not tooners.
Because not knowing this.....you can't tooon.

 

So how do you calibrate the noise limits? what are your feedback measures?

 

If you want to use an aftermarket computer , you need to change the knock sensor.
Use the Bosch donut type flat response sensor.


Otherwise stick with the factory computer and factory knock sensor which works perfectly with no programming required.

 

What is the rationale behind changing the knock sensor?
reason I ask because I use the factory sensory, and verified its functionality with Det-Cans.

 

Because it's the wrong type and works in a totally different way.

If you ever hear knock with det cans, it's because there's far too much of it.
That's why professionals use instruments , not ears.

 

Can you explain why it is the wrong type?
Maybe this is something we should raise to AEM if true.
Thx

 

Why don't you just read up on the difference between a flat response type and a resonant type sensor?
AEM SHOULD know but they don't.

It's extremely important. Unfortunately most of what you'll read about them is wrong

They sense knock in a different way with a different sort of input giving a different output.