Hi all,

I am researching the Xede system, in particular the SMART upgrades and have a few questions.

I have read all the available documentation from Vishnu, and the numerous threads about the benifets of the SMART system as well as some of the problems people have been having.

I like the SMART system, it seems like a decent product definately what you expect from Vishnu (bashers stay away please, I am happy to be a Vishnu repeat customer)

Anyhow, I like the smart system, but don't like the wideband O2 solution they released with SMART. Here in CA its hard to pass visual inspection with 3 O2 sensors. That's my only objection other than an extra hole in my DP.

That said, if I get it installed and schedule some custom dyno time to calibrate the smart system to the O2 sensor, how hard is it to make the SMART system work with a Zeitronix wideband?

http://www.zeitronix.com/Products/zt2/zt2.htm

I like that wideband because it provides narrowband outputs to drive the ECU (no bung to weld).

I am guessing that other than calibrating the O2 sensor, and maybe tweaking the Smart tables, that nothing else would change? correct?

If anyone has experiance with the Zeitronix, that would also be helpful. In particualr, I am curious how long the O2 sensor will last, my EVO is a daily driver, so I don't really want to be changing sensors all the time.

 

The LC-1 provides two outputs. One is used by the Xede and in the factory default configuration the other is setup for narrowband replacement. So you don't need to go with a Zeitronix to get what you want.

That said where will you put the wideband? The front sensor location will exceed the max temp for the sensor. The rear location is after the cat, so that isn't a solution. An alternative is that potentially you can use a part from the LC-1's manufacture that permits mounting the sensor in a too hot location.

Per the wideband sensor specification, the sensor will last 100K miles, assuming it isn't abused (e.g. too hot, etc).

 

well, what I want is to use the wideband in the stock location so I don't have 3 O2 sensors.

But since, it will exceed the max temps of the sensor, what choice do I have?
( I am assuming that the part used to allow the sensor in the hot areas is just a spacer like some of the O2 CEL fixes I have seen ) and I don't think that would be a good solution.


Thanks for the input, I was under the impression that the LC-1 didn't have the outputs for the narrow band.

 

It is a spacer that has poor heat transfer, or at least that was my read on the product.

With the sensor mounted just in front of the cat on the top of the pipe, it is rather hard to see as it is up in the tunnel.

 

yeah, that's what I figured. Now that I understand that it is a heat limitation it's probably better to drill holes in the DP.

[edit]
after looking at the website for the LC-1, I kind of like it better thant the Zeitronix anyway.. Cheaper too, which is always a good thing

thanks for your help freedom.

 

I just put in a new dp and hfc in my car, and i welded my bung in the pipe in the cat itself, just after the flange (before the honeycomb). this way you can remove the wideband or whatever just by swapping cats instead of dealing with the whole downpipe.

and yes, its on the very top of the pipe up in the channel, so you cant see it.

[EDIT] Oh, and if you're going with the SMART then yes the LC-1 is the only supported route. If you are tuning with an AFC or something like that i would probably go with the Zeitronix.. most of the extra features of the LC-1 require the LM-1, which is more expensie the the ZT and its LCD screen...