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 QUICK QUESTION GUYS JUST BOUGHT AN 03 SI EP3..!!
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jdmeg6118




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209 posts [100%]
Lake Elsinore And Fontana.. ca
4-6-2008
  QUICK QUESTION GUYS JUST BOUGHT AN 03 SI EP3..!!« » Reply  Edit


QUICK QUESTION GUYS JUST BOUGHT AN 03 SI EP3..!! From a lot and no owner's manuel girlfriend's car.My question is does the car require 91 octane and up???Or is 87 octane ok??? Thank's!!



98 Civic DX-sold
91 Civic SI-missed
93 Integra GSR-SOLD!!
94 Civic EX-sold
2000 HONDA CIVIC SI FOR SALE!! HIT ME UP..Looking for a GSR.!!

Other car's i owned.. 93 Integra LS, 92 Accord coupe LX, 90 Integra RS, 90 Accord EX, 89 Accord DX Flooded lol.



02_Si_FTW




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66 posts [100%]
Portland OR
2-18-2008
 « Re: QUICK QUESTION GUYS JUST BOUGHT AN 03 SI EP3..!! (jdmeg6118)« » Reply  Edit


You can run unleaded but of course, its not going to run as well as 91

blueshark123




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528 posts [100%]
NJ
1-9-2006
 « Re: QUICK QUESTION GUYS JUST BOUGHT AN 03 SI EP3..!! (02_Si_FTW)« » Reply  Edit


Quote, originally posted by 02_Si_FTW »
You can run unleaded but of course, its not going to run as well as 91

What are you talking about lol. He has to run unleaded gas. 87, 89, 91 and 93 are all unleaded.



2004 RSX Type-S - 654WHP 470WTQ @ 28psi C16 - Full-Race Stage 3 GT
http://www.evans-tuning.com
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WhiteOnRice




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3519 posts [100%]
Wisconsin
7-14-2005
 « « » Reply  Edit


Manual says 87.



EP3 Squad
Member #1

k20a3 for sale - 63k miles, PM me.


SkoundrelUSA




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6062 posts [100%]
Joisy
8-11-2004
 « Re: QUICK QUESTION GUYS JUST BOUGHT AN 03 SI EP3..!! (blueshark123)« » Reply  Edit


Quote, originally posted by blueshark123 »

What are you talking about lol. He has to run unleaded gas. 87, 89, 91 and 93 are all unleaded.

lol love when people don't know the difference between octanes or whether gas is leaded or not



Oh sure she was. Asked me where the "humor" section was? Humor? Come on...

For Sale
Main relays for EG
black Muteki lug nuts


WhiteOnRice




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3519 posts [100%]
Wisconsin
7-14-2005
 « Re: QUICK QUESTION GUYS JUST BOUGHT AN 03 SI EP3..!! (SkoundrelUSA)« » Reply  Edit


Quote, originally posted by SkoundrelUSA »
lol love when people don't know the difference between octanes or whether gas is leaded or not

Hehe, I dare anyone in Cali to run leaded and pass inspection.



EP3 Squad
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k20a3 for sale - 63k miles, PM me.


moores55




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750 posts [96%]
somewere tx
12-13-2005
 « Re: QUICK QUESTION GUYS JUST BOUGHT AN 03 SI EP3..!! (WhiteOnRice)« » Reply  Edit


Hey i asked the same question, my gas cap says to only run 91oct. but im cheap and have kpro so i tune for low oct, 87 ftmfw.



06 F150 FX4
03 ep3 turbocharged/ EP3 Squad #3
06 sv650s, H.I.D'S, framesliders, viper exhaust.
94 del sol si- totaled by a drunk.
"I'll keep you in the bedroom so long, they'll put your face on the back of a milk carton"

WhiteOnRice




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3519 posts [100%]
Wisconsin
7-14-2005
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Yeah, these threads make me want to photocopy my manual so it can be /thread once and for all.

Ninja edit: Uh oh... shop manual does not say 87 octane.

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IT'S 86 OCTANE!


Page 23 of 02/03 Civic Si shop manual.

Modified by WhiteOnRice at 5:02 PM 4/29/2008



EP3 Squad
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k20a3 for sale - 63k miles, PM me.


SkoundrelUSA




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6062 posts [100%]
Joisy
8-11-2004
 « Re: (WhiteOnRice)« » Reply  Edit


damn lol. Well the compression is pretty low so I guess it really isn't necessary to go high



Oh sure she was. Asked me where the "humor" section was? Humor? Come on...

For Sale
Main relays for EG
black Muteki lug nuts


ep3man




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16 posts [100%]
Centreville md
4-27-2008
 « Re: QUICK QUESTION GUYS JUST BOUGHT AN 03 SI EP3..!! (jdmeg6118)« » Reply  Edit


i have an 02 ep3 and i ran a whole tank through with 87, then with 91. i didnt notice a difference. it ran just as good



I GOT VTAKK !!!!

WhiteOnRice




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3519 posts [100%]
Wisconsin
7-14-2005
 « « » Reply  Edit


I've got months on 87, switched to 93 for two tanks (with ecu reset) and as expected, noticed no difference.



EP3 Squad
Member #1

k20a3 for sale - 63k miles, PM me.


SkoundrelUSA




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6062 posts [100%]
Joisy
8-11-2004
 « Re: (WhiteOnRice)« » Reply  Edit


Quote, originally posted by WhiteOnRice »
I've got months on 87, switched to 93 for two tanks (with ecu reset) and as expected, noticed no difference.

No improvement in gas mileage either?



Oh sure she was. Asked me where the "humor" section was? Humor? Come on...

For Sale
Main relays for EG
black Muteki lug nuts


WhiteOnRice




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3519 posts [100%]
Wisconsin
7-14-2005
 « « » Reply  Edit


I got like 5-10 more miles per tank.



EP3 Squad
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k20a3 for sale - 63k miles, PM me.


canadianep3




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30 posts [100%]
pr ab
5-19-2007
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why do ppl think runnin higher octain fuel will make there car run better all it does is stop detination i always see ppl with peice of shit cars and dodge neons puttin high octain fuel in them

WyldRice




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408 posts [100%]
Rice Street MN
4-22-2006
 « Re: (canadianep3)« » Reply  Edit


Hell- only 86!
(is that only for Canadian specs? )
i'm wondering if i can get by with the farmers blend- E-85 ...???

would that work? its only 1 below recomended- (And it's a lot cheaper per gallon around here!)

Wait a sec....
i can get 87 and 89 for the same price, and i usually put in 89,

so when i get to a half a tank- could i mix e-85 into it? (why not?- would it hurt performance?)

if it's ok, and gas hits over $4, i'll give it some consideration!


WhiteOnRice




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3519 posts [100%]
Wisconsin
7-14-2005
 « « » Reply  Edit


Dude, e-85 means it's 85% ethanol - CH3CH2OH. The octane rating is actually around 100 but it doesn't mean you can use it. In short, your compression is too low for efficient usage.



EP3 Squad
Member #1

k20a3 for sale - 63k miles, PM me.


WyldRice




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408 posts [100%]
Rice Street MN
4-22-2006
 « Re: (WhiteOnRice)« » Reply  Edit


Quote, originally posted by WhiteOnRice »
Dude, e-85 means it's 85% ethanol - CH3CH2OH. The octane rating is actually around 100 but it doesn't mean you can use it. In short, your compression is too low for efficient usage.

DAMN! stuck paying full price!

well, it was worth a shot! at least i'm not considering "cooking oil" like some people on you tube
(i guess it's for for diesel engines only)
thanks for the heads up Whitey!

i wouldn't want to f'up "lil bandit!"... so i'll stick with the 87 or 89!


vrrodri




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311 posts [100%]
San Antonio TX
7-2-2002
 « « » Reply  Edit


I got my 04 EP3 last week and it runs on 87 octane--sweeet

WyldRice




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408 posts [100%]
Rice Street MN
4-22-2006
 « Re: (vrrodri)« » Reply  Edit


Quote, originally posted by vrrodri »
I got my 04 EP3 last week and it runs on 87 octane--sweeet

yeah, because it has the K20A3 (i-vtec = intake only!)
its sad it doesn't put more than 140-145hp to the wheel -
(but a couple of mod$ and it'll beat most cars on the road- up until 70mph!)

They are great daily drivers either way! i love mine!
so,
Congrats on picking one up, to Both- You and the OP!

   


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