i have heard good things about PLX.. except for the price of course..
here is the link

http://www.plxdevices.com/cgi-bin/sh...ategory%3D00WB

 

I too have been very happy with my Zeitronix ZT-2

 

I like and prefer AEM UEGO ..

 

i have the lc-1 hooked to my aem works like a charm

 

I asked Scott from TTP about it on Wednesday and he said "probably 2 weeks." No word on price.

 

^ Awesome..thanks

 

i like the plx m 300
i heard that the aem is one of the worst widebands out there

 

thanks for all the feedback, i ordered the Zeitronix a few days ago. See how well it works out and get some logs finally going.

 

Anybody know anything about the Autometer Cobalt wideband gauge? I'm assuming it comes with a sensor...
I was thinking about going with this one because it will match my Defi Blue Racer gauges pretty well.

 

Anyone that is interested in the ZEITRONIX widebands and options please remember to contact us with any questions you may have. We are the master distributor for Zeitronix.

 

Virtually all widebands should work with E-85, though not all of them will be able to properly display AFR (they will display a value, but you will need to correct it).

Widebands typically use what is called a UEGO, or 'exhaust gas O2' sensor. The sensor works by using an oxygen pump and a Nernst cell. By oxidizing the exhaust gas, the sensor can be used to determine the 'equivilency ratio'. From this, lambda is inferred.

Lambda is a fuel independant measurement that reflects relative position to "stoichiometric ratio", or optimum air/fuel mixture for chemical combustion. In lambda, this point is always "1.0". Numbers smaller than 1.0 are richer (more fuel) than stoichiometric and, naturally, numbers larger than 1.0 are leaner than stoichiometric.

The widebands then take lambda and multiply it by a fixed value ("AFR multiplier") to *estimate* AFR. So, with gasoline, lambda is multiplied by 14.7. It is important to understand that AFR from the wideband is really just an estimate, you are actually looking at lambda (position relative to stoichiometric ratio). Between different blends of fuel the actual number is hardly every exactly 14.7.

With E-85, the only thing that needs to change is the multiplier, instead of 14.7, I think you would use a value of about 9.7. I know you can set the mutliplier to anything you want with Innovate widebands, I'm sure some other widebands let you change the AFR multiplier as well.

However, even if your gauge is fixed at 14.7, you can still use it, you just need a calculator. Let's say the gauge shows an AFR of 10.5. To figure out what the AFR is for E-85 you would first convert back to lambda (10.5 / 14.7 = 0.714), then multiply the result by the correct AFR multiplier (0.714 * 9.7 = 6.93).

-jjf

 

well it seems to me that you can't go wrong with any of the major widebands PLX, Zeitronix, Inovative, AEM. Just up to what works for you price/looks wise

 

aem uego

 

I didn't say that! I just said that they are really lambda meters, not AFR meters, so compatibility with E-85 fuel should not be a problem.

As far as 'going wrong', it really depends on what you want the wideband for. The controllers are quite sophisticated and vary wildly in terms of results. For example, on the bench, with calibrated gases, widebands using the exact same UEGO sensor can have an accuracy ranging from <.1 AFR (.007 lambda) to >1.0 AFR (.070 lambda) and have a measurement settle time of anything from <5 mS to >1000 mS.

So, 'good enough' really depends on what you are trying to do.

-jjf

 

+ZEITRONIX sure does measure well into the 9's AFR and displays LAMBDA on the sleek LCD screen as well as logs it for up to 9 hours.

E85 + ZEITRONIX is a potent combination for performance.