[Rapid_blue_zl1_22]

I have an AeroForce gauge in my car and I wired in a wideband sensor. I have the gauge set up to read Lambda, but it only reads a single digit after the decimal point. At WOT I'm showing .7-.8 Lambda, which needless to say, is completely useless. Is there a way to change the gauge to read hundreds instead of just tenths?

I can set up the gauge for regular A/F ratio, but I have read that it isn't as accurate on DI engines. I was showing 10.9-11.5 at WOT, which seems to be a little rich for DI cars.

[Rapid_blue_zl1_22]

Anyone have this problem? For those out there with a gauge for Lambda, what are you using? Should i just stick with this gauge and put it back to regular A/F ratio?

[RobZL1]

It only reads one decimal point for everything.

I'd just leave it in AFR. It's only a multiplication conversion factor. It's no more or less accurate in either mode. It's just the resolution of the gauge. These things run really rich in stock form, for what it's worth.

Another option is an AEM 30-0334. Lots of people use that one. You can change the decimal point on it, too.

[Joshinator99]

Originally Posted by RobZL1

It only reads one decimal point for everything.

I'd just leave it in AFR. It's only a multiplication conversion factor. It's no more or less accurate in either mode. It's just the resolution of the gauge. These things run really rich in stock form, for what it's worth.

Another option is an AEM 30-0334. Lots of people use that one. You can change the decimal point on it, too.

Yep, agreed, sensor only reads O2 anyway. So a 12.0 AFR is .82 lambda anyway. I run the AEM one and love that it populates it’s data in with the rest of the ECM data in HP Tuners.

[IneedAZ]

or run both..i do..AEM on my pass side and Aeroforce on drivers. I only have the Aerofoce gauge visible while driving. I mainly bought it cause they offered the ZL1 faceplate. I keep the AEM in my glovebox...its a way to somewhat verify/compare readings that i get when i log.

[Rapid_blue_zl1_22]

Originally Posted by RobZL1

It only reads one decimal point for everything.

I'd just leave it in AFR. It's only a multiplication conversion factor. It's no more or less accurate in either mode. It's just the resolution of the gauge. These things run really rich in stock form, for what it's worth.

Another option is an AEM 30-0334. Lots of people use that one. You can change the decimal point on it, too.

Thanks for the information, that is what I needed to know. My car is still on stock tune, but I have a Kong X-port blower and Corsa intake. I really just got the wideband to make sure the car was still safe. I road course track the car, so a little on the rich side definitely isn't a bad thing. I will just keep this gauge and put it back to AFR.

[Rapid_blue_zl1_22]

Originally Posted by Joshinator99

Yep, agreed, sensor only reads O2 anyway. So a 12.0 AFR is .82 lambda anyway. I run the AEM one and love that it populates it’s data in with the rest of the ECM data in HP Tuners.

Isn't it dependent on the fuel being used though? 100% 93 octane is 14.65 stoich, but E10 93 (which all pump gas is now) is 14.1 stoich. So in that case .82 lambda would be 11.5 AFR. This is why more and more people are using lambda now, stoich is always 1, no matter what fuel is used.

[RobZL1]

Originally Posted by Rapid_blue_zl1_22

Isn't it dependent on the fuel being used though? 100% 93 octane is 14.65 stoich, but E10 93 (which all pump gas is now) is 14.1 stoich. So in that case .82 lambda would be 11.5 AFR. This is why more and more people are using lambda now, stoich is always 1, no matter what fuel is used.

Yes, but you'd need to tell the aeroforce that you've swapped fuels. It won't know. If you target 12.5:1 with gas, you'll still target 12.5:1 with e85. It's still lamba of 0.85. Lambda is the base measurement. 14.7 is the scaling factor. I hope that makes sense. It will still read 12.5 with full e, even though it's actually
8.3afr.

[Kerry]

nobody gets it 12.5 is 12.5 no matter the fuel. It DOES NOT read the fuel but the oxygen. U can make the gauge read 4.8 for methanol if u set a gauge to read methanol but guess what put it in gas and even though its still running 4.8 it will read 12.5 because its an oxygen sensor NOT a fuel sensor. gezz press on with the lambda its all the same thing

[Rapid_blue_zl1_22]

Originally Posted by RobZL1

Yes, but you'd need to tell the aeroforce that you've swapped fuels. It won't know. If you target 12.5:1 with gas, you'll still target 12.5:1 with e85. It's still lamba of 0.85. Lambda is the base measurement. 14.7 is the scaling factor. I hope that makes sense. It will still read 12.5 with full e, even though it's actually
8.3afr.

So if my car is on pump 93 (10% Ethanol), What AFR should I be at? Currently, my car starts at 11.5 and finishes at 10.9 AFR at WOT. Is that still normal? It seems a little on the rich side, but I just want to make sure it isn't too rich, or more importantly too lean.

[Joshinator99]

Originally Posted by RobZL1

Yes, but you'd need to tell the aeroforce that you've swapped fuels. It won't know. If you target 12.5:1 with gas, you'll still target 12.5:1 with e85. It's still lamba of 0.85. Lambda is the base measurement. 14.7 is the scaling factor. I hope that makes sense. It will still read 12.5 with full e, even though it's actually
8.3afr.

[Joshinator99]

Originally Posted by Rapid_blue_zl1_22

So if my car is on pump 93 (10% Ethanol), What AFR should I be at? Currently, my car starts at 11.5 and finishes at 10.9 AFR at WOT. Is that still normal? It seems a little on the rich side, but I just want to make sure it isn't too rich, or more importantly too lean.

Way too rich. A ZL1 can do .84 all day long, feel free to do .82/.83 if it helps you sleep better.

[ShockingZ]

Originally Posted by Kerry

nobody gets it 12.5 is 12.5 no matter the fuel. It DOES NOT read the fuel but the oxygen. U can make the gauge read 4.8 for methanol if u set a gauge to read methanol but guess what put it in gas and even though its still running 4.8 it will read 12.5 because its an oxygen sensor NOT a fuel sensor. gezz press on with the lambda its all the same thing

What? stoich for gas is currently 14.08 for e10 and 9.8 for E85. Most E80ish setups will be around 10.0-10.2 stoich. Once you switch to lambda, you should see .84 of that but AFR would still be the 10.0 or less if you are on full E80-E85.

[Rapid_blue_zl1_22]

Originally Posted by Joshinator99

Way too rich. A ZL1 can do .84 all day long, feel free to do .82/.83 if it helps you sleep better.

To the point I will be fouling plugs, or is it just not ideal for max HP? I want the car a little on the rich side since I road course track the car.