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Old 08-16-2008   #1 (permalink)
minorc
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Higher Octane Gas?

Probably a stupid question, might get flammed for it but here goes. I got my head worked on last month, Full port polish stage (1) n/a camshaft and fidanza lightweight flywheel I have numerous other modifications done on my car but no turbo as of yet. Should i be running a higher grade fuel for my engine? The other day my car threw a P0304 code,( cylinder 4 misfire ) just wondering if that could potentially be my problem. Or should i just add some TKO / Seafoam or any other fuel additive from time to time?

Also i know i should probably get my car dyno tuned, but with the cost is it really worth it? Will i see noticeable gains, if not gains then more reliability?

Thanks alot
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Old 08-16-2008   #2 (permalink)
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Re: Higher Octane Gas?

it cant hurt to try a higher octane
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Old 08-16-2008   #3 (permalink)
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Re: Higher Octane Gas?

Sure can when gas is $1.50 a litre here in lovely Ontario Canada... and thats for regular. I think premium is 1.90 ish
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Old 08-16-2008   #4 (permalink)
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Re: Higher Octane Gas?

dude, i dont know how that traslates to gallons, but its expensive here too
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Old 08-16-2008   #5 (permalink)
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Re: Higher Octane Gas?

3.8 litres in a gallon so

3.8 x 1.50 we'll say = 5.70 per gallon
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Old 08-16-2008   #6 (permalink)
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Re: Higher Octane Gas?

ouch, its 4.00 a gallon here for premium
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Old 08-16-2008   #7 (permalink)
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Re: Higher Octane Gas?

Quote:
Originally Posted by minorc View Post
Sure can when gas is $1.50 a litre here in lovely Ontario Canada... and thats for regular. I think premium is 1.90 ish
You have to pay to play my friend. You modded your car such that it may need higher octane. Either pay for the gas or pay with a broken engine.
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Old 08-16-2008   #8 (permalink)
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Re: Higher Octane Gas?

lets all remember the most important thing about it before we ever complain about our gas. no matter how expensive or how bad the gas prices get, we are always ahead of EVERYONE else. be happy we dont drive a v6 or a v8 truck or something....or a 5.0l mustang haha.
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Old 08-16-2008   #9 (permalink)
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Re: Higher Octane Gas?

Rob got it right. Premium mods = premium gas.
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Old 08-18-2008   #10 (permalink)
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Re: Higher Octane Gas?

if you get a misfire you should run a higher octane. just remember that if youre goin to run leadd fuel you remove your cat or its going to get clogged. plus leaded fuel smells so yummy
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Old 08-18-2008   #11 (permalink)
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Re: Higher Octane Gas?

I threw some Premium fuel in my car the other day, and I noticed it had more... prep. Felt like the engine did not have to work as hard to accelerate.

Is it safe to use Premium gas in our Civics?
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Old 08-18-2008   #12 (permalink)
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Re: Higher Octane Gas?

ya its safe. i run 110 octane LEADED without a cat
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Old 08-18-2008   #13 (permalink)
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Re: Higher Octane Gas?

I have never put any gas in my car except premium. there was one time i actually put regular after having my car for 2 years using nothing but premium just out of curiousity to see if i would notice a difference...and i did. it was slower to accelerate and it just seemed like an overall loss of power.

i think whether its safe to put premium in our cars or not is totally out of the question. i havent ever used anything else and ive never had any problem of any kind.
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Old 08-18-2008   #14 (permalink)
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Re: Higher Octane Gas?

post back if the gas doesnt fix your misfire.
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Old 08-19-2008   #15 (permalink)
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Re: Higher Octane Gas?

got higher compression? if not, higher octane does nothing for you. its something else and i can tell you right now, these cars dont like to be modded. and yeah the car needs tuning, both fuel and cam timing
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