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post #1 of 31 (permalink) Old 06-12-2013, 08:13 PM Thread Starter
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E87 vs e89

I recently got a tune from trifecta for my 05 Balt base coupe I was told to use e89 to see the horsepower increase. I wasnt sure if this was true. Are there any harmful effects from using a higher octane? Are there any positive results? Right now im getting 22 mpg with a cold air intake and header.


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post #2 of 31 (permalink) Old 06-12-2013, 08:16 PM
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Whats e87 and e89? You mean regular 87 and premium 89 or 93?
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post #3 of 31 (permalink) Old 06-12-2013, 08:18 PM Thread Starter
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Yes premium e87


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post #4 of 31 (permalink) Old 06-12-2013, 08:19 PM
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Don't understand the E part. All we have is 87, 89 and 93. No ethanol in it.
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post #5 of 31 (permalink) Old 06-12-2013, 08:55 PM Thread Starter
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In America we have 10% ethanol


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post #6 of 31 (permalink) Old 06-12-2013, 09:08 PM
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Yeah, he's right, 10% Ethanol here in the states. There is never any negative to running a higher octane fuel. Since you are now tuned, I'm assuming you're now tuned to run a higher octane fuel and your car will work better with that higher octane. People will correct me if I'm wrong but I know that you won't do any damage running a higher octane.

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post #7 of 31 (permalink) Old 06-12-2013, 09:17 PM
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Quote:
Originally Posted by Clarky215285 View Post
In America we have 10% ethanol


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10% is right but I've never heard people call it e87 or e89. Lol.

---------- Post added at 12:17 AM ---------- Previous post was at 12:16 AM ----------

Kmac is also correct. No downside in running higher octane. Most people who get a tune run higher octane anyway.
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post #8 of 31 (permalink) Old 06-12-2013, 09:19 PM Thread Starter
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Kmac probably knows what im talking about since we're both from upstate ny. Some of the yellow labels on pumps say e87 etc


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post #9 of 31 (permalink) Old 06-12-2013, 09:23 PM
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87 is regular gas. The tune you got is for that. I've been running 93 recently for cooler combustion temps, seems to run a little better but no overly notable difference.

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post #10 of 31 (permalink) Old 06-12-2013, 09:23 PM
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Quote:
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Kmac probably knows what im talking about since we're both from upstate ny. Some of the yellow labels on pumps say e87 etc


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Really? Im from Ky. There's a little tag at the tops of the pumps that say may contain up to 10% ethanol. But nothing beside the octane number. Get me a pic please, I'd like to see that.
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