Flex Fuel Sensor install
Burning Brakes
Joined: Oct 2012
Posts: 873
Likes: 86
From: Katy Texas
Burning Brakes
Joined: Oct 2009
Posts: 1,004
Likes: 68
From: Cincinnati OH
Race Director
Joined: Jul 2007
Posts: 10,961
Likes: 2,643
From: Texas Hill Country
The software is updated every day. How often one chooses to download is up to them.
Le Mans Master
Joined: Aug 2005
Posts: 5,375
Likes: 328
From: CA.
St. Jude Donor '13-'14-'15
Finally had the time to install the flex fuel sensor on my C7---happy to reply the conversion was seamless-- At P/T there is virtually no difference and is completely un noticeable---- During PE from about 2800 on up the ECM adds apprx 2 degrees of timing which is normal for my 47% ethanol content--- After increasing the content to 66% the timing adder went to +3 degrees----all the increases in ethanol and the respective timing made the 40-100 times quicker---When getting to 70% the timing adder was at + 4 degrees-----Fueling was set at a safe .83 lambda-------Now going to experiment with adding more fuel and timing to see if it responds better----Right now I'm at apprx 26.5 degrees timing from 2800 on up to about 6000 where it drops off to approx. 22 degrees-------No KR at all and no audible pinging--
Race Director
Joined: Jul 2007
Posts: 10,961
Likes: 2,643
From: Texas Hill Country
Finally had the time to install the flex fuel sensor on my C7---happy to reply the conversion was seamless-- At P/T there is virtually no difference and is completely un noticeable---- During PE from about 2800 on up the ECM adds apprx 2 degrees of timing which is normal for my 47% ethanol content--- After increasing the content to 66% the timing adder went to +3 degrees----all the increases in ethanol and the respective timing made the 40-100 times quicker---When getting to 70% the timing adder was at + 4 degrees-----Fueling was set at a safe .83 lambda-------Now going to experiment with adding more fuel and timing to see if it responds better----Right now I'm at apprx 26.5 degrees timing from 2800 on up to about 6000 where it drops off to approx. 22 degrees-------No KR at all and no audible pinging--
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Burning Brakes
Joined: Oct 2009
Posts: 1,004
Likes: 68
From: Cincinnati OH
Everyone gets free updates. Don't install with the disc, just download off your login page at www.hptuners.com.
The software is updated every day. How often one chooses to download is up to them.
The software is updated every day. How often one chooses to download is up to them.
Last edited by Elite275; May 5, 2015 at 08:30 AM.
Race Director
Joined: Jul 2007
Posts: 10,961
Likes: 2,643
From: Texas Hill Country
Mine should be delivered today. I received the key in an email last night. If you download from the login page can you install the drivers for the USB cable from there as well or do those load from the CD? I'm hoping to have time to download my tune and poke around tonight.
If you are only going to be tuning your car then you really don't need 2.25, although it is the future version. The 2.25 Scanner is not fully functional so if you want reliability and full features then stick to 2.24.
Burning Brakes
Joined: Oct 2009
Posts: 1,004
Likes: 68
From: Cincinnati OH
Thanks for the insight. I honestly won't be doing any real tuning for awhile. I'm just tired of my current issues I'm experiencing and this will give me insight into things and force me to start learning. I can data log and make minor adjustments based on feedback from guys like yourself and T/A who have similar mods and are reporting out real world results based on your learnings. I'm soaking us as much as I can and once I have the tool I can really get in there and investigate some of the more in depth items you guys have been discussing and look at the table values myself.
Le Mans Master
Joined: Apr 2001
Posts: 5,473
Likes: 717
From: Black Forest CO
Just take is slow and do lots of reading. There is a ton of good info in the HPT and EFILive forums and tutorials. I learned on the LS1B controller in my 02 C5. The E92 in the C7 is a completly different beast compared to the LS1B. I have a lot to learn (always) to begin understanding how the E92 works.
Thanks for the insight. I honestly won't be doing any real tuning for awhile. I'm just tired of my current issues I'm experiencing and this will give me insight into things and force me to start learning. I can data log and make minor adjustments based on feedback from guys like yourself and T/A who have similar mods and are reporting out real world results based on your learnings. I'm soaking us as much as I can and once I have the tool I can really get in there and investigate some of the more in depth items you guys have been discussing and look at the table values myself.
Burning Brakes
Joined: Oct 2009
Posts: 1,004
Likes: 68
From: Cincinnati OH
Just take is slow and do lots of reading. There is a ton of good info in the HPT and EFILive forums and tutorials. I learned on the LS1B controller in my 02 C5. The E92 in the C7 is a completly different beast compared to the LS1B. I have a lot to learn (always) to begin understanding how the E92 works.
Thread Starter
Drifting
Joined: Mar 2011
Posts: 1,519
Likes: 7
From: Indy
If anyone needs a tune after the sensor install, I have everything you need. My tune is flawless, and built for reliability, and adjusts to altitude, and humidity. Additionally, if you decide to add headers, or any other parts down the road, the first update tune is free
Racer
Joined: Mar 2011
Posts: 449
Likes: 8
From: Hayes Virginia
I am seriously thinking about doing this E85 mod because it is readily available here. My only issue is having a tuner close by that can make the (proper) adjustments. My question is.. Can the car be driven after the sensor and wiring are installed and connected to find a tuner or does someone out there have a flash type tuner for this set up as I am not like Higgs and you others that tune your own cars.... Thanks
Melting Slicks
Joined: Dec 2014
Posts: 2,345
Likes: 442
From: Jupiter FL
It seems like tuning for this is in the stone age from what I see. On my little ST I have multiple tunes that I can flash on the fly, anywhere from crappy 87 octane to e30 mix. The tuning was done specifically for my car by sending in log files of performance in 3rd or 4th gear full throttle pulls. The tuning was rather cheap and the tuning device (Cobb access port) was about $350. I do realize whats being done here is a little more elaborate, making the ECU understand what % E is running but if I could just flash a tune for e30, e50 or e85 on the fly it would be awesome.
Burning Brakes
Joined: Oct 2012
Posts: 873
Likes: 86
From: Katy Texas
It seems like tuning for this is in the stone age from what I see. On my little ST I have multiple tunes that I can flash on the fly, anywhere from crappy 87 octane to e30 mix. The tuning was done specifically for my car by sending in log files of performance in 3rd or 4th gear full throttle pulls. The tuning was rather cheap and the tuning device (Cobb access port) was about $350. I do realize whats being done here is a little more elaborate, making the ECU understand what % E is running but if I could just flash a tune for e30, e50 or e85 on the fly it would be awesome.
Melting Slicks
Joined: Dec 2014
Posts: 2,345
Likes: 442
From: Jupiter FL
I know I like the idea a lot, unfortunately I think it's past novice mechanic abilities like me.
Safety Car
Joined: May 2006
Posts: 4,016
Likes: 93
From: St. Louis, MO
Tech Contributor