I have 1200 miles on race fuel on my apex. Original sensor. How do you have it turning on?
Does it come on with the key or when it starts? If it comes on only with the key, once the heater comes on any combustion condensation will cause it to blow out. The best way is to wire it to come on when it starts, or make sure you just start it when cold. Don't let it heat up first then start it.
Also if the sensor gets too hot it might cause a problem too, how far away in the pipe is it?
And finally the Innovate is a POS somewhat and there are a lot of people with sensor problems. AEM doesn't appear to have the problems the Innovate does.