Should I go E85 or C16?
Thread Starter
Drifting
Joined: Oct 2013
Posts: 1,746
Likes: 1,300
From: Fort McMurray Alberta
2018 C7 of Year Finalist
Should I go E85 or C16?
Hello everyone! So I am looking to squeeze a bit more power out of my build and wondering if the best way to go about that is E85 with a flex fuel sensor or C16/Fuse 116 race fuel.
Background of the build is a '14 M7 Stingray with a built 416, ECS1500, LT4 HPFP/Injectors, CPR low side and running meth. Car makes 840whp/750ft-lbs and is currently trapping 141 in the 1/4 on the pump/meth combo.
Goal is to make more power at the track and the occasional night of Mexico races. I do not have easy access to any of that so it will have to be carried in jugs regardless. Closest E85 pump is 750kms away so I would need a barrel if I were to go that route anyways. Another factor is, car will have to be remote tuned as my local tuners are good at installing parts and tuning other vehicles.... but cannot seem to get a handle on these C7 tunes. I have worked with Fasterproms this year, I just don't know how hard remote tuning a different fuel is.
Any advice for which route to go? From what I know (not much), I understand that a race fuel tune would need to be manually switched and basically run the car to empty before putting in the race fuel. Where as an E85 tune would adjust automatically based on the % and maybe be a bit easier to use.
Background of the build is a '14 M7 Stingray with a built 416, ECS1500, LT4 HPFP/Injectors, CPR low side and running meth. Car makes 840whp/750ft-lbs and is currently trapping 141 in the 1/4 on the pump/meth combo.
Goal is to make more power at the track and the occasional night of Mexico races. I do not have easy access to any of that so it will have to be carried in jugs regardless. Closest E85 pump is 750kms away so I would need a barrel if I were to go that route anyways. Another factor is, car will have to be remote tuned as my local tuners are good at installing parts and tuning other vehicles.... but cannot seem to get a handle on these C7 tunes. I have worked with Fasterproms this year, I just don't know how hard remote tuning a different fuel is.
Any advice for which route to go? From what I know (not much), I understand that a race fuel tune would need to be manually switched and basically run the car to empty before putting in the race fuel. Where as an E85 tune would adjust automatically based on the % and maybe be a bit easier to use.
Le Mans Master
Joined: May 2000
Posts: 8,729
Likes: 1,508
From: Redmond WA
Well, depends on two major factors:
1) Do you have close and ready access to E85?
2) Do you trust the currently available solutions for scaling up the high side fuel delivery?
If so, then E85 is your friend! But if you do not have ready access, C16 is one approach. So is RaceGasConcentrate, which I've used to great success on the dyno so far.
I don't see any reason a race gas tune would need to be switched, C16 doesn't burn (much) any different than normal gas, so other than octane, it doesn't care. I guess you could run a "street" tune with a lot less timing and try to crutch the car in town, but its boost that will generate the most octane needs...
1) Do you have close and ready access to E85?
2) Do you trust the currently available solutions for scaling up the high side fuel delivery?
If so, then E85 is your friend! But if you do not have ready access, C16 is one approach. So is RaceGasConcentrate, which I've used to great success on the dyno so far.
I don't see any reason a race gas tune would need to be switched, C16 doesn't burn (much) any different than normal gas, so other than octane, it doesn't care. I guess you could run a "street" tune with a lot less timing and try to crutch the car in town, but its boost that will generate the most octane needs...
Last edited by davepl; Dec 31, 2018 at 10:10 AM.
Thread Starter
Drifting
Joined: Oct 2013
Posts: 1,746
Likes: 1,300
From: Fort McMurray Alberta
2018 C7 of Year Finalist
1) Do you have close and ready access to E85?
2) Do you trust the currently available solutions for scaling up the high side fuel delivery?
If so, then E85 is your friend! But if you do not have ready access, C16 is one approach. So is RaceGasConcentrate, which I've used to great success on the dyno so far.
2) Do you trust the currently available solutions for scaling up the high side fuel delivery?
If so, then E85 is your friend! But if you do not have ready access, C16 is one approach. So is RaceGasConcentrate, which I've used to great success on the dyno so far.
Team Owner
Joined: Jan 2007
Posts: 29,063
Likes: 1,839
From: cookeville tennessee
ttt
At this power level I wouldn't do it at all I don't see you getting a great deal of power from it without a tune, Plus having to drive that distance are to not be tracking the car a lot I don't see it. Now with you having HP TUNERS AND BE ABLE TO CHG THE TUNE and also tracking the car a lot yes. But again this is just me on it without a new tune for it.. Robert
Melting Slicks
Joined: Oct 2017
Posts: 2,002
Likes: 326
From: North Carolina
Last edited by Matthewstorm; Dec 31, 2018 at 11:43 PM.
Le Mans Master
Joined: Mar 2010
Posts: 7,050
Likes: 945
From: DFW TX
You won’t get what you want out of E85 without port injection. At best you’ll be able to run E45-50. Your car is identical to what mine was a couple years ago. You’ll pick up 30-40 on a e blend and pretty much the same on c16.
I would do c16 until you can do port injection and go all out on E85
I would do c16 until you can do port injection and go all out on E85
Thread Starter
Drifting
Joined: Oct 2013
Posts: 1,746
Likes: 1,300
From: Fort McMurray Alberta
2018 C7 of Year Finalist
At this power level I wouldn't do it at all I don't see you getting a great deal of power from it without a tune, Plus having to drive that distance are to not be tracking the car a lot I don't see it. Now with you having HP TUNERS AND BE ABLE TO CHG THE TUNE and also tracking the car a lot yes. But again this is just me on it without a new tune for it.. Robert
You won’t get what you want out of E85 without port injection. At best you’ll be able to run E45-50. Your car is identical to what mine was a couple years ago. You’ll pick up 30-40 on a e blend and pretty much the same on c16.
I would do c16 until you can do port injection and go all out on E85
I would do c16 until you can do port injection and go all out on E85
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Team Owner
Joined: Jan 2007
Posts: 29,063
Likes: 1,839
From: cookeville tennessee
I agree I really dont see the 80 rwhp that you are thinking here from just what you are wanting to do here. But is good that you have HP tuners and can play with it at the track.. Robert