I've given up trying to get my LC1 to accurately read. It outputs 8.9 constantly and only works 15% of the time. They have said that they will replace it, but at this point I think I'm just going to get another unit as it is too much of a pain in the a$$. Tried recalibration, new sensor, and relocating the O2 bung with no luck (reads error 8).
Which wideband are you using and have you had any success with it? I am looking into the AEM unit - I already have their boost controller and it works well....
i have the aem unit. it a good piece but the ring surronding the gauge could be nicer. my autometer sport comp 2's look like the factory gauges but this has a silver painted plastic ring or black. even has peramiters already in hp tuners
rats, sorry when I was given the link it didnt requrie a subscription and I dont have one. I dont remember the outcome but I do remember that the uego unit did very well. I only rember that becasue it was the unit I had.
AEM all the way. That is the only wideband we use in all our shop cars and out personal ones. They seem to work the best and super easy to use and understand.
Location: Tinker till it blows... then back it off a notch, maybe!!
Sorry to hear about chasing your tail with the LC1
I did some research before attempting the install on my 03 Z and chose to install the sensor in place of the driver's side narrow band.
The wires going to the narrowband include power for the heater and a direct ground to the pcm along with reference and narrowband signal wires which are now supplied by the LC-1. Another reason why I chose to do this is that with the LS #5 /7 ring land problems which seem to surface more often than expected, I thought that monitoring that side of the engine and keeping it a bit rich would be better than going to the other (easier) side and hoping that the driver's side would fall in line.
Good luck with the new unit and again...sorry to hear that you had so much trouble with the LC1
I have the AEM UEGO and have used it on my old blown C5 and now my C6. I loved the ease of use and easy integration with HPT but recently I have noticed that if I am in closed loop my AFR floats around 15.5:1. Another guy noticed this as well with his PLX. After much debate on the HPT forums we're still not sure whether our WB's are accurate near stoich or WOT. The only way to tell would be to install a second/different controller and sensor. So previously I would have said AEM for sure but now I'm not sure.
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Bill Winters
'05 Black on black M6 Z51 - TTIX and forged 408 in the works.
"When life hands you lemons you upgrade to a C6." - Me
It's impossible to tell without another wideband as a sanity check. I tuned the car in open loop MAF to a perfect 14.7:1 according to the AEM. Then I re-enable closed loop and the stock O2's switch back and forth normally but the closed loop AFR is ~15.5ish so either the WB is reading correctly and there is a problem with the narrow band O2's or they narrow bands are working right and the actual AFR is ~14.7 (in closed loop) but the AEM is not acurate around stoich which begs the question; Is it off throughout the entire band?
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Bill Winters
'05 Black on black M6 Z51 - TTIX and forged 408 in the works.
"When life hands you lemons you upgrade to a C6." - Me
I've given up trying to get my LC1 to accurately read. It outputs 8.9 constantly and only works 15% of the time. They have said that they will replace it, but at this point I think I'm just going to get another unit as it is too much of a pain in the a$$. Tried recalibration, new sensor, and relocating the O2 bung with no luck (reads error 8).
Was it reading 8.9 on an Innovate gauge, or through some other external logger/display?
I ask because there were some known issues DAC chips in older units that caused the analog output, which you would use for external displays or datalogging, to die.
The wideband sensor itself is incapable of reading below 10:1 (and the controller knows this) so for you to see 8.9 means that either the grounding/wiring was done incorrectly (not likely, based on what you're saying) or that the DAC chip was fried.
I use the LC-1 in my boosted C5Z constantly and it works like a charm, it's a shame they had a flaw with the older DAC chips. All seems to be resolved now though.
Corvette Store
Wideband - which one?
Easier to set up and no calibration needed.
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