Has anyone monitored their Air Fuel ratio driving ?
 

I took a wide band AF and hooked it up to the secondary O2 sensors.. I dont have any cats..

Cruising AF was around 14 - 14.5 and WOT was 12.5 - 13..

Pretty happy with these results...

I'm trying to find the easiest/cheapest/most reliable method, what did you use?

I just used a 300$ monitor my dad uses to tune his muscle cars..

It plugged into the bung and worked great.. I dont have the model or anything, but Im sure you could find something have decent at the local performance shop.

Good to know where you're at in regards to AF for peace of mind. IMO

Your WOT # is perfect IMHO.

Cruise jumps around a bit more, but WOT was solid at 12.5-13 range.

Id like to find something that could tell me if the ECU is pulling timing... Anyone know of anything that could do that?

I use this. You can log quite a few things. 52 different fields to be exact. Also clears faults.

http://www.dashdaq.com/features/gauges.htm

I have a wideband gauge in my car that I added, very useful especially back when I was running nitrous and swapping back and forth between a couple different ECUs.

Does this unit show ignition timing? If the ecu has pulled timing due to knock..?

AFR is looking good. Mine was 12.8 WOT to redline on a Dynojet.

Ive used the Dash Dyno, hooks up to your OBDII port and could monitor your AFR's while driving. Don't know how accurate it is but its a cool little gadget.
On the dyno my AFR's were between 12.5-13 at WOT, don't remember exactly.

For decent wideband logging, install Zietronics & wideband O2s for logging with a DashDaq. 55K guys have been doing this for sometime.....
LM2 from Innovative is what I use on the street.
DAS and Xentry can do this too.

Is there anything that can monitor the ignition timing, knock senors and tell me if the car is pulling timing?

This is a wonderful looking item. (I have a Brockway D gauge in my Porsche only because it fits in a extra single din slot and looks totally stock.) On the C63 this window mount makes sense. Thanks for the reference on it.

DashDaq does monitor timing. Also fuel trim. For the knock sensor, you can use Phormula ks-3 or ks-4 or tap into the existing knock signal and have DasDaq monitor it too.

Just Like Lenin said, Dasdaq will log ignition advance and other PIDs. The nice thing about Zietronics is the ability to monitor independant sensors.

Sorry I only saw this now. Like Lenin said it does display Ignition Timing amongst others.

I have found that the bung in exhaust and Dash Daq display identical lambda values (Bear in mond that I am catless).

Ever since I have the Dash Daq I hardly dyno my car. I measure airflow, check timing figures, lambda.

It helps you understand waht your car does in different conditions like hot vs cold, pump fuel vs race fuel, low altitude vs high altitiude, etc

If you want you can add Zeitronix AFR bung to Dash Daq and EGT sensors, etc.

Brilliant device.

So this dasdaq will tell me if the car is pulling timing in different conditions? Will it display accurate air fuel too?? I just want to make absolutely sure before I buy it, thanks guys.


Whats LAMBDA values??

You will need a Zietronics with 1 or 2 wideband O2 sensors for the DashDaq to log from. This will be accurate. Ignition logs over OBD2 are not perfect (perhaps a little slow) but will give you an idea of what the car is doing real time.
Lambda is a measurement of mixture. Lambda 1 = 14.7 AFR

Here is a sample screen print of info you can get with Zeitronix and DashDaq combo. You can also record all of this through the DashDaq to an SD card and send it to a tuner of your choice from the track. And if you spend a few more $$ on a special cable, you tuner can send you updates to your file while you are still at the track.

https://mbworld.org/forums/attachmen...8-41-44-am.jpg

I recognize this is an old thread however I am in market for a data logger for AFR and was looking that Dashdaq. Do I really need to get the Zt-2 also or just Dashdaq is enough? Car in question is 13 e63 amg biturbo

Read post #18 above. Yes you need both for accurate results. There are also several other wideband sensors that are supported.

Innovate LM2 for me.

If u just want to monitor afr. Go with the lm2. Plug it in the down stream o2 bungs.

used das dag for sale by lenin on this forum in engine & performance section

With LM-2 we can add extra sensors like in the ZT-2?

For what I read LM-2 can log OBD2 data and O2 only or I'm wrong?

With zeitronix ZT-2 without dashdaq we cannot read from OBD2 or there is another way?
I checked PCMSCAN software and they support ZT-2 as an aux input but don't know if it will read also from extra sensors plugged in to zt-2!

https://palmerperformance.com/produc...lpro/index.php