Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB - View Single Post - Can an Ecutek tune influence what flex fuel gauge reads?

kev0 · 04-08-2021, 10:29 PM

My tuner is off the clock otherwise I would have asked him but I'll ask you guys in the mean time. Can a tune influence what a flex fuel sensor will read? I switched tuners and I got the green light to go E85. I filled up 10.5 gallons of E85 and drove 10 miles but my FF gauge never changed. It only fluctuated between E10 and E11 ever since I went back to pump gas.

Car still drove fine although the fuel trims are a bit lean. This isn't a faulty gauge, is it? It worked for the past 15k miles before I switched tuners but now it isn't updating with the new tune.

04-08-2021, 10:29 PM	#1
kev0 Senior Member Join Date: Feb 2018 Drives: '14 Location: Midwest Posts: 485 Thanks: 246 Thanked 99 Times in 76 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	Can an Ecutek tune influence what flex fuel gauge reads? My tuner is off the clock otherwise I would have asked him but I'll ask you guys in the mean time. Can a tune influence what a flex fuel sensor will read? I switched tuners and I got the green light to go E85. I filled up 10.5 gallons of E85 and drove 10 miles but my FF gauge never changed. It only fluctuated between E10 and E11 ever since I went back to pump gas. Car still drove fine although the fuel trims are a bit lean. This isn't a faulty gauge, is it? It worked for the past 15k miles before I switched tuners but now it isn't updating with the new tune. Last edited by kev0; 04-08-2021 at 10:40 PM.