07-19-2021, 11:15 PM | #1 |
Drives: 2017 ZL1 Join Date: Aug 2020
Location: Lakeside, Az
Posts: 489
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So educate me on e50 vs 93 vs 100
With all the donations from you wonderful folks for my little blower porting this fall, I'm wondering exactly what benefits at what venues with the various fuels available at both the 1/2 mile and road race events and (hopefully I'll also get down the 1/4 mile this fall/winter depending on if they ever consider covid a done deal and open it up.)
Car has headers, hi flow cats, 9.17 lower, rotofab, soler ported tb, jms voltage booster, e sensor and tune. Car was dynoed in cool air in feb with e45 on a mustang dyno and showed 688 at the wheels. Typically at the 2 venues mentioned my aeroforce gauge will show e content between 40-45% no matter if I get it at the pump or mix 5 gallons of vp with 10 gallons of 91. With the talk on another thread it's got me curious if I should be running 100 at the tracks or try to get to e50 or if one is better then another for roadcourse vs 1/2 mile stuff? I'm also curious if when sending the blower off to Kong if they make a griptech quickchange pulley close to the oem size and have that done while they have it? Thanks in advance for shared info! |
07-19-2021, 11:26 PM | #2 |
Drives: 2016 1SS NFG A8 Join Date: Aug 2017
Location: 46804
Posts: 6,793
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E50 for sure. It's still 102-103 octane and better cooling properties. I would say anything above E40 has an advantage over 100 octane fuel.
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2016 NFG 1SS A8
Options-2SS Leather/NPP Perf. mods-Whipple 2.9/Fuel System/Flex Fuel/103mm TB/Rotofab Big Gulp/Cat Deletes/Corsa NPP Per. times- 10.5 @ 137 w/ 1.8 60ft Full weight on 20's 1200DA |
07-21-2021, 02:57 AM | #3 |
Drives: 2017 ZL1 Join Date: Aug 2020
Location: Lakeside, Az
Posts: 489
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Thanks
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07-21-2021, 05:57 AM | #4 |
Drives: 2017 Camaro 1SS Join Date: Aug 2016
Location: NH
Posts: 1,692
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Wait, to get E50, you are mixing 91 gas with E85, correct? If so, then I would suggest that you think about mixing 100 gas instead with your E85 to arrive at the E50. Reason being of course, little more octane. I am talking about for your race use, not daily driver of course.
Normal E85 is mixed with cheap gas to arrive at their theoretical ~104 octane that some people claim, from what I've heard. There's a company called Ignite that sells E85 that is mixed with high octane gas, and they seem to claim 114 octane for it. That's what I'm getting at, better gas in the mix means better knock resistance. |
07-21-2021, 06:38 AM | #5 | |
Drives: 2022 Lt1 A10 Join Date: Nov 2015
Location: clark, mo
Posts: 8,860
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Quote:
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2022 Lt1 6.2 A10, Maggie 2300, THPSI Port Inj/10 rib, Rotofab, E, Nickey, SCOL, Griptech, RC Bandits, Hoosiers/MT 9.80@142.96 1.44 60ft, 6.34@112 707/669 RWHP/TRQ. 16SS Maggie 2650 9.41@147 1.35 60ft, 5.99@119. 16 C7 A8 10.90@128 Bolt on stuff
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07-21-2021, 06:58 AM | #6 | |
Drives: 2023 BMW M4 Competition Join Date: Dec 2012
Location: USA
Posts: 657
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Race gas is also very expensive and isn't readily available at the pump in most places. I like you don't trust pump gas when/if running a tune. E30-E85 makes a lot more power and safer than 91-93, and much more feasible than race fuel. https://www.amazon.com/REV-X-E85T050.../dp/B07KQNS6KD
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2023 BMW M4 Competition (daily)
2022 ZLE M6 (weekend toy) 2022 BMW X3m40i Past: 2022 Tesla S Plaid 2020 Shelby GT500 sold 2019 Hellcat Redeye-traded for new GT500 2019 ZL1 A10 - sold (meh) 2019 Tesla M3P 2016 Hellcat Challenger - A8 sold but never forgotten 2016 Camaro 2SS M6 2014 Mustang GT A6 2012 Mustang GT M6 "brembo" 3.73/FBO 2012 Camaro SS L99 (Wife's)- slow |
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07-21-2021, 07:41 AM | #7 | |
Drives: 2019 Chevy Camaro ZL1 M6 Join Date: Jul 2019
Location: Sea level
Posts: 1,252
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Quote:
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Kong Stage X Port, NW103, LPE HPFP, XDI +30 Injectors, ARH Headers, Flex Fuel, JMS Booster, AWE Touring, Elite E2-X CC. Stock heads, stock cam, stock pulleys: Tuned by KingLT1. 740whp Uncorrected on e50
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07-21-2021, 08:17 AM | #8 |
Drives: 2016 1SS NFG A8 Join Date: Aug 2017
Location: 46804
Posts: 6,793
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True E85 is 109 octane. E70 is 105 octane. Most pump E85 is actually E70-E78 depending on location. There are actually a few pumps in my area that are E90. Most ignite products claiming 114 octane are E98 based.
Mixing E with 91 does yield 2 points lower octane opposed to mixing with 93. E70 mixed with 93 to get E50 is 101.7 octane. E70 mixed with 93 to get E40 is 100 octane. Anything above E40 will provide good gains.
__________________
2016 NFG 1SS A8
Options-2SS Leather/NPP Perf. mods-Whipple 2.9/Fuel System/Flex Fuel/103mm TB/Rotofab Big Gulp/Cat Deletes/Corsa NPP Per. times- 10.5 @ 137 w/ 1.8 60ft Full weight on 20's 1200DA |
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