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Old 11-15-2008, 11:50 PM   #15
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50hp is perfectly possible since hes running a turbo just like me.

410rwhp on 95 octane, 8* advance (i know, really low but its a stock motor)
454rwhp on 100octane, 14* advance

thats 44rwhp, which is easily 50 crank hp and thats going 95-100 not even 91-100.
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Old 11-15-2008, 11:57 PM   #16
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Quote:
Originally Posted by fazm View Post
50hp is perfectly possible since hes running a turbo just like me.

410rwhp on 95 octane, 8* advance (i know, really low but its a stock motor)
454rwhp on 100octane, 14* advance

thats 44rwhp, which is easily 50 crank hp and thats going 95-100 not even 91-100.
I would argue that you are getting the gain from the tune, not the octane. Did you follow the link and read it? If you get a gain it is not the octane level. Read. Increased octane level adds zero hydrocarbons to the fuel mixture= no added power.
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Old 11-16-2008, 12:06 AM   #17
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Quote:
Originally Posted by fazm View Post
50hp is perfectly possible since hes running a turbo just like me.

410rwhp on 95 octane, 8* advance (i know, really low but its a stock motor)
454rwhp on 100octane, 14* advance

thats 44rwhp, which is easily 50 crank hp and thats going 95-100 not even 91-100.


Its not because the higher octane inherently makes more power, its because you can tune the engine into a "harsher" range that makes more power that would usually cause detonation with lower octane. Notice your timing advance that you quoted.
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Old 11-16-2008, 12:28 AM   #18
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Originally Posted by CWIweldace View Post
I would argue that you are getting the gain from the tune, not the octane. Did you follow the link and read it? If you get a gain it is not the octane level. Read. Increased octane level adds zero hydrocarbons to the fuel mixture= no added power.
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Originally Posted by Kyle2k View Post
Its not because the higher octane inherently makes more power, its because you can tune the engine into a "harsher" range that makes more power that would usually cause detonation with lower octane. Notice your timing advance that you quoted.

thank you both, but i know how engines and octane works. i nevermeant to imply i gained this numbers with "only higher octane" i posted the timing numbers because as he said it was with the "push of a button" that he gained the horsepower, designating he was runnng a different tune, as are my numbers on differet tunes.

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Originally Posted by andyrew View Post
Theres one 2 miles from my house...

My daily driver picks up 50hp when I throw 100 octane on it , However I have a separate file to run it (push of a button)

i was replying to this comment "Why do people believe all the nonsense other people write? Andyrew, 50 HP? you're crazy."
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Old 12-05-2008, 08:15 PM   #19
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here in patterson theres a 76 that has 100 octain,
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Old 12-05-2008, 08:35 PM   #20
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I'm not going to stand on either side of this issue. To be honest, I really don't know if a simple boost in octane will do anything for power. But I will say one thing....using Wikipedia as a reliable proof of anything is completely pointless. Wikipedia is full of crap on many, many, many issues because absolutely anyone (even some uneducated dumb-a$$) can go in and edit any topic and add whatever they "believe" is true. I'm sure you could google the octane facts and find whatever the truth is, but trusting Wikipedia is not a reliable source.
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Old 12-05-2008, 09:03 PM   #21
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I'm not going to stand on either side of this issue. To be honest, I really don't know if a simple boost in octane will do anything for power. But I will say one thing....using Wikipedia as a reliable proof of anything is completely pointless. Wikipedia is full of crap on many, many, many issues because absolutely anyone (even some uneducated dumb-a$$) can go in and edit any topic and add whatever they "believe" is true. I'm sure you could google the octane facts and find whatever the truth is, but trusting Wikipedia is not a reliable source.
true point, but the info is correct.



higher octane doesnt just add power, it allows you to run a higher spark advance allowing you to burn the mixture longer and more completely, which is what leads to the increase in power.
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Old 12-05-2008, 09:21 PM   #22
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true point, but the info is correct.



higher octane doesnt just add power, it allows you to run a higher spark advance allowing you to burn the mixture longer and more completely, which is what leads to the increase in power.
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Don't forget higher compression
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Old 12-05-2008, 09:49 PM   #23
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I'm glad to see that the massive fail in this thread is balanced by a small portion of solid knowledge.

Running 100 octane in a stock motor is a waste of money. It's like running 93 in a car that is built and tuned for 89. Pointless. Absolutely pointless.


However if you really think that 100 octane gives you a performance boost, why don't you try C16?

(Who wants to take bets on how long it takes for someone to actually take my advice and blow a motor?)
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Old 12-05-2008, 10:42 PM   #24
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Originally Posted by LSxJunkie View Post
I'm glad to see that the massive fail in this thread is balanced by a small portion of solid knowledge.

Running 100 octane in a stock motor is a waste of money. It's like running 93 in a car that is built and tuned for 89. Pointless. Absolutely pointless.


However if you really think that 100 octane gives you a performance boost, why don't you try C16?

(Who wants to take bets on how long it takes for someone to actually take my advice and blow a motor?)
Who said we where talking about a stock motor. Yes Unless other wise stated for example Corvette the lowest grade will work due to the fact the factor has set it up for this ie Timing & Compression. If you where to buy a programmer that advances your timing (most due) and run 85 then you are playing with fire.
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Old 12-06-2008, 01:43 AM   #25
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Old 12-06-2008, 01:53 AM   #26
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thank you - excellent link!

Seems it can make quite the difference afterall
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Old 12-06-2008, 09:21 AM   #27
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Who said we where talking about a stock motor. Yes Unless other wise stated for example Corvette the lowest grade will work due to the fact the factor has set it up for this ie Timing & Compression. If you where to buy a programmer that advances your timing (most due) and run 85 then you are playing with fire.
Read post number 4. The OP was talking about stock motors, as were half the people who replied.

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thank you - excellent link!

Seems it can make quite the difference afterall
Yes, it makes a difference in cars that are rated for higher octane. What's your point? GM tunes the LS3 for 91 and lets the knock retard pull timing for idiots who put 89 or 87 in the car. Obviously they'll dyno lower. STILL doesn't mean it's going to run better on 100.
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Old 12-06-2008, 09:42 AM   #28
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Originally Posted by CWIweldace View Post
I would argue that you are getting the gain from the tune, not the octane. Did you follow the link and read it? If you get a gain it is not the octane level. Read. Increased octane level adds zero hydrocarbons to the fuel mixture= no added power.
one could also argue that u did gain from the 100 octane as well. because it allowed the car to be tuned more aggressive, thus leading to more power. so really its a combination of both. cant tune the car that aggressive w/o higher octane.

u can gain power, just by using a better tune on regular 91 octane, now throw in 100 ur looking at more hp potential due to more aggressive tuning capabilities.
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