hi i just intalled in my Z (just mod MD 5/16" Spacer, O2 Exahust) the innovate LC-1 innovate A/F gauge, and dunno why but it shows when starts engine 7.5 ~ 10.3 AFR, but i have also apexis turbo timer and with that it shows 13.5 ~ 16 AFR, so anything is wrong with installaton? i'm worry because in next week i'm going to install the vortech supercharger, so i follow the instructions for the innovate AF LC1

First disconnect the sensor from the exhaust, later i put in ACC to supply 12V to LC-1 for 20 seconds, lateri turn it off and then the sensor is expose to the AIR for calibration, then i switch on and wait like 2 minutes till the LED lights comes steady, so i did twice this all instructions but still the same, so anyone can help me? thanks

 

you did the calibration in open air right? as in not installed in the exhaust yet?

 

Yes! Must calibrate and make sure all our grounds are good grounds. They go on and on about grounds on the Innovate forums.

 

yeah i did calibrate in open air , not installed in exhaust,

 

yeah i did calibrate it twice and the same numbers, yeah i did put all grounds in it but still the same, but can you give me an example where is the best ground to put it on?

 

One of the black wires is for calibration, you ground it to "reset" the sensor. I hooked it up with the other grounds and boy did that screw with my readings.

 

hi i did add dat ground to a LED push bottom for reset , and still the same, today i check all Grounds to fit in a chassis lug, but still the same numbers, 7.5 ~ 10.3 AFR, i pushed the bottom for re-cablibrate Free Air Calibration, but still the same numbers man, i suckss!!! anyone can give me more information? thanks you all and i appreciate for your advices

 

Contact Innovate, or check on their forums. I'm sure the people on their forums will have a better idea and sooner.

Also are you sure the LED push button isn't allowing a ground in and of itself? I'd try using a two pole momentary non-lit button to make sure.

 

Best ground is the engine block or batt negative.

 

hi, yeah i did put the ground on chassis on a lug with a nut, but still the same, but i'll calibrate again tomorrow and i'llcheck if works.

 

Chassis ground may not be good enough. As an experiment run a wire to the negative part of the battery. Also you should have more than one ground. You have the ground for the gauge. You also have the grounds for the LC-1 itself. You also have the analog output grounds. The gauge can be chassis. But the LC-1 needs to be grounded to batt. neg. Again this information is from the Innovate forums they are very explicit about grounds and ground offsets.

 

hi thank a lot for your advice, so i connect LC-1 GND to battery negative, Gauge GND and analog output GND in Chassis ? like this? i'll try it in a few hours thanks

 

i have mine connected to ECU ground (soldered to wire). works great, although most people would say not to do that

 

hi all !~! yeah it works!!! i connected to the battery GND and also there are 2 cables for output Yellow and brown, so i connect the brong one (output 2) and calibrate free air, and did work! so right now my AFR is between 13.7 ~ 15.8 AFR but one question when i accelerate the pedal it shows aroung the 13.7 ~ 15.8 AFR but when i let the pedal (no accelerate) the AFR is like so high 18 ~ 22.4 AFR buy i thinkthat s maybe because im not giving fuel, right?

 

you mean let off the pedal when youre moving and in gear?

 

yeah!! when i let off the pedal in a gear, so is that normal?

 

When you let off the pedal in gear the injectors should shut off. So you should read a very lean AFR.