the big octaine guestion ??

I think it'll kill your o2 sensor after a while, but from what i've read the denso o2s take it better
 
I put 110 in the tank a couple of weeks ago at the track. I got o2 trouble code before I left the track to go home that day...
 
I've been running half 110 mix for a week or so since I went to the track, and no trouble code, cross counts are still cross counting... I'm using a Denso O2 though, not a stock AC Delco.
 
I been running straight 110 and on a couple of occasions mixed in some 116. All summer long. :cool: Denso heated O2.
 
i run about 12 gallons of 110 through mine every couple weeks when i go to the track so far so good o2 cc look fine :)
 
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