After looking at things, I decided to take the plunge and have my tuner set up my car for E-85!
I knew putting the hellcat injectors into the car during the initial build was a good idea.
It's now using a GM Flex Fuel sensor inline on the fuel line heading up to the rails. Because of how the sensor works (and that it uses 12V source power... and it's noisy), we wired it into the fuel pump source so it wouldn't impact other sensors.
Just by seat of the pants I've definitely picked up some power. The Holley learning / compensation did a good job - the only change needed was adding in more fuel volume against % of ethanol in the fuel. Since the car has a wideband O2 sensor, it tunes towards lambda, which allows it to set all the parameters correctly for the fuel change. My local station has been serving up 77% ethanol for the last several tanks, which equates to 18% more fuel versus straight gas. It's running cooler, and now I can run the A/C effectively without the temp running away. It's also wild, when I park the car in the garage and close the door there's substantially less residual heat under the hood.
I'm going to go for another "live tune" session with my guy before the end of this month, since I'll be running her at Rock Falls Speedway for the first time.
If you've considered it, DO IT! It's worth it. The only thing I'll have to do is run a couple of tanks of 93 octane with Stabil at the end of the season for storage. Then when spring rolls around, I can run the "normal" gas down, and fill with ethanol, since the computer does the compensation.
I knew putting the hellcat injectors into the car during the initial build was a good idea.
It's now using a GM Flex Fuel sensor inline on the fuel line heading up to the rails. Because of how the sensor works (and that it uses 12V source power... and it's noisy), we wired it into the fuel pump source so it wouldn't impact other sensors.
Just by seat of the pants I've definitely picked up some power. The Holley learning / compensation did a good job - the only change needed was adding in more fuel volume against % of ethanol in the fuel. Since the car has a wideband O2 sensor, it tunes towards lambda, which allows it to set all the parameters correctly for the fuel change. My local station has been serving up 77% ethanol for the last several tanks, which equates to 18% more fuel versus straight gas. It's running cooler, and now I can run the A/C effectively without the temp running away. It's also wild, when I park the car in the garage and close the door there's substantially less residual heat under the hood.
I'm going to go for another "live tune" session with my guy before the end of this month, since I'll be running her at Rock Falls Speedway for the first time.
If you've considered it, DO IT! It's worth it. The only thing I'll have to do is run a couple of tanks of 93 octane with Stabil at the end of the season for storage. Then when spring rolls around, I can run the "normal" gas down, and fill with ethanol, since the computer does the compensation.
