Flex Fuel Sensor install
Race Director
Joined: Jul 2007
Posts: 10,961
Likes: 2,643
From: Texas Hill Country
I have been running e85 for about 3 months now and am running 27 degrees at WOT with no KR. Mileage is off by 30% as expected and part throttle and full throttle response is noticeably improved. My car when stock had ET and MPH at Atlanta GA. (1200 ft elevation and DA usually 2000 +++) 13.05 and 109. Now with factory Z06 exhaust, and drag radials at the same track 12.08 and 116. Car and driver weight 3420. Thanks to Dave Steck
Thread Starter
Drifting
Joined: Mar 2011
Posts: 1,519
Likes: 7
From: Indy
Pro
Joined: Jan 2013
Posts: 567
Likes: 28
From: Arizona
A Trifecta "canned" tune on a stock C7 provides 25 hp alone, so E-85 with a comprehensive tune ought to provide 55 hp? Not sure how that sub-divides between the base tune and a further tune for E-85.
Racer
Joined: Aug 2000
Posts: 420
Likes: 31
From: Greenville SC
I have a safe frontage road and have run serial 40mph-100mph tests with increasing advance with a before to after max increase of .65 seconds per HPtuners software looking at time stamps for first screen that shows 40 and then 100. I reached a point of diminishing gains at 25 to 27 degrees advance at wide open throttle, 70% etoh per sensor display (winter blend). Temperature, wind, fuel load and thus car weight, and barometric pressure along with intake temperature obscure any greater precision. As each of these can force the car into a different cell on the timing table. Duty cycle is 104% so I think this is the absolute max with factory injectors and pump and pressure. My previous all time best was a 11.95@118 at Darlington SC with ?DA -354 during winter. That was with less ETOH (40%) and less timing and a heavy set of factory wheels so I feel that it could do 11.82@119 or better now. The thing I love about the car now is how smooth and great the low speed torque delivery is in daily driving.
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Racer
Joined: Aug 2000
Posts: 420
Likes: 31
From: Greenville SC
I bought the sensor from Dave Stick at DSX tuning it comes complete with wiring and harness I believe that if you check his website that you will find the same part for 2007 to 2013. With the same pin for the sensor connection to the ECM.
Intermediate
Joined: May 2018
Posts: 30
Likes: 0
Intermediate
Joined: May 2018
Posts: 30
Likes: 0
just got done installing mine, real easy overall. Hardest part was the 10mm fender bolt on the inside of the fender. Once the connector was removed, I could fish it out between the fender on door. Had pleanty of room to open connector and insert pin. All good, vehicle runs normally. Now to get it to the tuner to make sure I did everything correct and it sees the sensor. More after next week
PS: my side skirts will be in late next week, glad I did this before I installed those...
PS: my side skirts will be in late next week, glad I did this before I installed those...