Atlanta Metro BRZ/FRS

[reeves]

Originally Posted by bestwheelbase

Cool. Link us to the data. We did a search but could not find any hard numbers.

No hard data I'm refering to specifically.. Like I said, just a general knowledge of E85 characteristics vs. 93 octane gas.. On a google search, I found a general comparison here.. they also mention the "cooler/cleaner" benefits of E85, among many others.

[MosesFRS]

Originally Posted by reeves

No hard data I'm refering to specifically.. Like I said, just a general knowledge of E85 characteristics vs. 93 octane gas.. On a google search, I found a general comparison here.. they also mention the "cooler/cleaner" benefits of E85, among many others.

Is it worth doing or just go FI and be done with it?

[bestwheelbase]

Originally Posted by reeves

No hard data I'm refering to specifically.. Like I said, just a general knowledge of E85 characteristics vs. 93 octane gas.. On a google search, I found a general comparison here.. they also mention the "cooler/cleaner" benefits of E85, among many others.

Oh okay. We have never heard this general knowledge, so thanks for explaining.

That ImportTuner article, in the section called "Pros of using E85", mentions tempterature twice:

1. The higher autoignition temperature of Ethanol (689 degrees F, compared to gasoline's 475 degrees F) enables E85 to be more knock-resistant and handle more boost or higher compression.
   
2. E85 initiates a cooler intake charge, allowing for higher boost pressure.

Frankly I do not understand the comment about "initiates a cooler intake charge" but I am not an engineer, and neither was the author of that article. Shame they didn't go into more technical detail. Nothing really mentions cooler operating temperatures. Maybe @Visconti and @FA20Club.com can shed light on the topic.

[reeves]

Originally Posted by MosesFRS

Is it worth doing or just go FI and be done with it?

I feel like that's going to be a personal preference on how much "power" you're seeking. I was able to add ~30 hp & ~15 lb-ft of torque to the wheels, and that was enough for me.. esp. with the torque dip eliminated from my car . It's the perfect blend of power & fuel economy for my needs: DD and long out of state trips.

After this past weekend.. I noticed my hi-speed highway cruising MPG did go up (from previous trips on the same route). By hi-speed, I mean 75-85 mph cruising.. I averaged 28-29 mpg before on that same trip crusing at those same speeds (during the winter too with colder temps). This past weekend, I got a surprising 31.4 mpg.. and I had my A/C on the entire trip too.. I even had stretches where I was going 90mph (when I was by myself on the hwy). I was running 93 octane of course, not E85.

My unproffesional explaination is that it's noticeably easier to maintain cruising speeds with the added mid-range power.. I notice my "on-the-fly" MPG guage is generally much higher, especially on downward inclines.. Before, I needed a bit more 'gas' pedal to maintain my speed around ~80mph, even on a downward slope of the hwy.

[reeves]

Originally Posted by bestwheelbase

Oh okay. We have never heard this general knowledge, so thanks for explaining.

That ImportTuner article, in the section called "Pros of using E85", mentions tempterature twice:

1. The higher autoignition temperature of Ethanol (689 degrees F, compared to gasoline's 475 degrees F) enables E85 to be more knock-resistant and handle more boost or higher compression.
2. E85 initiates a cooler intake charge, allowing for higher boost pressure.

Frankly I do not understand the comment about "initiates a cooler intake charge" but I am not an engineer, and neither was the author of that article. Shame they didn't go into more technical detail. Nothing really mentions cooler operating temperatures. Maybe @Visconti and @FA20Club.com can shed light on the topic.

I've been driving on 93 octane this entire past week.. and today I'm finally back on E85 . I'm going to try and get on a good (and relatively deserted) stretch of hwy and cruise for a bit at 85-90mph, and see if my oil temps are still hovering around 230 degrees F.

That's what I've observed this past weekend during my outta town trip running on 93 octane, so this week I'll see if E85 does any good for lower the oil temps or not.

[Ahernandez0909]

Originally Posted by reeves

Thanks for the pics and getting the sound clip for me Ahernandez! That was a great race-- I mean, drive up the back roads!

I definitely felt the added mid-range pull on my car after I drove your car. I tried to drive yours the same way I did mine's, shifting around 4.5-5K so I could shifting into the "dip" rpms.. It was a good back-to-back comparison for me. The berk exhaust is definitely too loud for me, but it does sound nice at WOT.

That "drive up back roads" showed me I need a tune and some headers Then again, I'm not so sure if I'll be able to DD a car with the loud exhaust I have now PLUS headers haha. I'm thinking of the tune first. However, it'll be a while down the road before I do that. If I ended up buying everything I wanted RIGHT when I got the money for it I would have nothing else to do later. I wanna make it feel like a new car every year so I'm gonna try and slow down on my modifying. I'm thinking if I should get a tune soon, headers, cosmetic changes, or nothing at all. We'll see

That race... I mean... that high speed drive up and down those back roads were awesome. Definitely going to have to meet up again some time. Hopefully with others. I would love to see more people. We should make this a frequent thing. Meeting up and driving around NE GA. If anybody wants to make this a weekly, biweekly, or monthly meet, it would be great. Let me know Thanks for the test drive @reeves

[jstans84]

Originally Posted by Ahernandez0909

That "drive up back roads" showed me I need a tune and some headers Then again, I'm not so sure if I'll be able to DD a car with the loud exhaust I have now PLUS headers haha. I'm thinking of the tune first. However, it'll be a while down the road before I do that. If I ended up buying everything I wanted RIGHT when I got the money for it I would have nothing else to do later. I wanna make it feel like a new car every year so I'm gonna try and slow down on my modifying. I'm thinking if I should get a tune soon, headers, cosmetic changes, or nothing at all. We'll see

That race... I mean... that high speed drive up and down those back roads were awesome. Definitely going to have to meet up again some time. Hopefully with others. I would love to see more people. We should make this a frequent thing. Meeting up and driving around NE GA. If anybody wants to make this a weekly, biweekly, or monthly meet, it would be great. Let me know Thanks for the test drive @reeves

I hope you didn't cross any double yellow lines :p

Sent from my SPH-L900 using Tapatalk 2

[reeves]

Originally Posted by jstans84

I hope you didn't cross any double yellow lines

haha na we kept it civil.. the last thing i need is a reckless driving/speeding ticket.

[jstans84]

Just saw an Asphalt and a Firestorm on Fulton Industrial.

Sent from my SPH-L900 using Tapatalk 2

[ravenblackfrs]

Whose white frs is in B lot parking at Hartsfield Jackson Intl airport in ATLANTA. I'm parked beside you! Don't worry, she is safe and sound.

[Ahernandez0909]

When @reeves and I took the twins out for a meet and drive

[killerkid08]

Originally Posted by bestwheelbase

Oh okay. We have never heard this general knowledge, so thanks for explaining.

That ImportTuner article, in the section called "Pros of using E85", mentions tempterature twice:

1. The higher autoignition temperature of Ethanol (689 degrees F, compared to gasoline's 475 degrees F) enables E85 to be more knock-resistant and handle more boost or higher compression.
   
2. E85 initiates a cooler intake charge, allowing for higher boost pressure.

Frankly I do not understand the comment about "initiates a cooler intake charge" but I am not an engineer, and neither was the author of that article. Shame they didn't go into more technical detail. Nothing really mentions cooler operating temperatures. Maybe @Visconti and @FA20Club.com can shed light on the topic.

From my understanding, due to the alcohol content of ethanol, when sprayed into the air charge as it enters, the fuel pulls heat from the intake charge into itself. This reduces the intake charge temps, allowing for additional air to enter the cylinder.

[Ahernandez0909]

Driving to work today I saw a bright red FR-S in the express lane on 85S. I drive like 6 miles on the highway to work and its always rush hour so I just stay in the right lane. As soon as I saw him, I weaved my way to the lane next to the express lane. I sped to catch up to him but once I was about 100 feet behind him he stopped accelerating. I guess he noticed me :P We shared thumbs up and went on our way. Stupid and reckless but it made my morning . That's still one of the only Twins that I've seen on the road without planning on it.

[yeleng22]

Sighted an asphalt on law/Suwannee rd around three today. Looking good!