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LC-1 Wideband Air/Fuel Ratio Controller

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Old Jan 2, 2006 | 10:10 PM
  #1  
streetzlegend's Avatar
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LC-1 Wideband Air/Fuel Ratio Controller

Dynotune offers this lc1 wideband /controller that can plug into most autometer a/f gauges. You guys think this set up will give an accurate reading? They also offer it with their own digital gauge. Can anyone comment on this please? or what other wideband o2 and gauge is available? I did my search and was not able to find too much on this.
Old Jan 3, 2006 | 07:31 AM
  #2  
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is your friend. It all depends what you need it to do. BTW, i'd get an a/f gauge that shows numbers, not the silly light show. If you want the lights then get a gauge that shows both. The affordable wideband o2 kits (that i know of) that come with their own displays are the PLX M-300 (around $300) and the Zeitronix Zt-2 (around $279). The zeitronix can't datalog on it's own, but it can give outputs so you can datalog on a laptop computer. The M-300 has the advantage if you want to use a piggy-back computer with an auto-tune feature like E-manage Ultimate or SMT-7 because of it's 0V-5V linear output but has ZERO datalogging capability. If datalogging or a linear output don't matter to you both are perfectly fine. The Innovate LC-1 you're looking at is fine too if you can find a good display for less than 100 bux.

I just looked at the displays they have on their site and they're all crap, the Autometer gauge included. I'd just get a PLX M-300 or Zeitronix Zt-2 and call it a day.

PLX:

Zeitronix:
Old Jan 21, 2006 | 11:25 AM
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Havent checked the site in a while but let me add some info. The Innovate products are the best on the market. But let me tell you why not just saying it.
The biggest difference is actually the (pat. pend.) measurement principle of the LM-1/LC-1. Different from all other widebands it does NOT use the pump current as AFR indication. Instead it uses the sensor to form with the LM-1/LC-1 circuit what's called a delta-sigma analog to digital converter. The difference is that the analog signal in this case is not a voltage or current, but directly the exhaust gas composition. This allows it to:

A: react extremely fast with no settling or overswing
B: be independent of electronic parts tolerances and drifts
C: compensate for sensor drift due to aging every time you do a free air calibration.
D: calibrate for the actual sensor characteristic independent of the factory calibration resistor, which is only correct when the sensor is new.
E: is much less susceptible to exhaust back pressure.

Another advantage of that measurement principle is automatic compensation for 'rich gas loading'. This is an effect most WB manufacturers do not compensate for or even know of. When a WB sensor is operating in a rich gas for a prolonged time (minutes), it's cells 'load up' and slowly drift, requiring more and more pump current. This will indicate richer and richer than it actually is. If the ECU is WB controlled in closed loop, the engine would actually run leaner and leaner to compensate.
The LM-1's/LC-1's measurement principle is not susceptible to that.

As far as the Dynotune gauges you will not find a better built gauge, all billet aluminum and accuracy second to none. If you saw a Dynotune gauge next to an Autometer gauge your questions would be answered. Here is another site but see what people say about the Dynotune Gauges
http://www.ls1tech.com/forums/showthread.php?t=385440
Dynotune does not sell Autometer gauges never have and never will. We just program the LC1 for you to work with the autometer gauge.

Dean
dynotunenitrous.com
Old Jan 24, 2006 | 09:31 AM
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Ive used it and it works great. I'd highly recommend one.
Old Jan 26, 2006 | 07:55 AM
  #5  
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i have an LC1 and it works good but i wouldnt hook it up to an autometer gauge
Old Jan 26, 2006 | 09:19 PM
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subs. do u have it to their digital one?
Old Feb 2, 2006 | 08:36 PM
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this should be a sticky since i dont think theres alot of info on widebands. but im probably wrong
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