10.65 CR in a Chipped Honda, Premium or Regular Gas?

[Dasfinc]

This is my first time playing with CR, but my car is going from a 9.28CR to a 10.65-10.8CR with the new Headswap, Maybe this is a stupid question but Do I need to run Premium fuel from here on out? I know some hondas from the factory run 10-1+ of CR and run regular gas, but their ECU is designed for it, while mine is 'chipped' by the boyz at Phearable.net for my setup (They never mentioned any requirements of needing premium fuel)


Cliffs Notes:

My CR is going from 9.28 to 10.65 in a 1.5 liter 4 Cyl, Should I run Premium now, or does it not matter? I apologize if this is a stupid question.

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[NetChemica]

This is my first time playing with CR, but my car is going from a 9.28CR to a 10.65-10.8CR with the new Headswap, Maybe this is a stupid question but Do I need to run Premium fuel from here on out? I know some hondas from the factory run 10-1+ of CR and run regular gas, but their ECU is designed for it, while mine is 'chipped' by the boyz at Phearable.net for my setup (They never mentioned any requirements of needing premium fuel)


Cliffs Notes:

My CR is going from 9.28 to 10.65 in a 1.5 liter 4 Cyl, Should I run Premium now, or does it not matter? I apologize if this is a stupid question.

run premium if you want to be on the safe side or ask phearable boyz themselves

 

[EvilRadioFlyer]

just ask the people who tuned it

 

[Dasfinc]

Damn, Chitown is filled with some scarey people tonight http://www.chitownracing.com/forums/showthread.php?t=88820

 

[Nasty93]

id run 93 just because. why not?

 

[Dasfinc]

Thats what I was planning on doing anyways, I was just looking for some Guidance to confirm it.

 

[IDAFC21]

be lucky you even have 93. all i get out here is piss 91 :wtc:

 

[Dasfinc]

I live out in Farm-County, Mostly 87/89/91, but some places have 93.

 

[NetChemica]

id run 93 just because. why not?

Because regular is cheaper and it is easier to combust... aka... it will make more power.

 

[NetChemica]

Let me rephrase that:

On an engine that can safely run 87, simply filling up with 93 octane gas will take away some of the power your engine makes.

 

[Dasfinc]

My Focus runs NOTICEABLY slower with Premium.

 

[thinkingstrings]

screw 93 u need to put 100 in that.....we have a 100 pump at the miejer here i think its like 5$ a gallon

 

[Dasfinc]

I dunno how the Hatch will respond to race gas...

 

[Max]

Then what's the point of race gas and Torqo(sp?)

 

[NetChemica]

Then what's the point of race gas and Torqo(sp?)

Here is a very simple way to explain this but there is a lot more involved:

You have two engines, engine A and engine B

Engine A makes 200hp
Engine B makes 600hp

87octane explodes at 140f
93octane explodes at 180f

spark plugs fire a spark at 180f

Right before the plug fires the combustion chamber temps rise due to compression:
Engine A combustion chamber heats up to 120f
Engine B combustion chamber heats up to 175f

Engine A + 87oct = explosion during spark
Engine B + 87oct = explosion during compression

Engine A + 93oct = explosion during spark
Engine B + 93oct = explosion during spark

Since 93 octane requires 180f to explode, it will burn a little slower than 87oct 180f and cause less of a "pop". 93oct will be barely burning while 87oct will be way past it's limit.


Again, there is more to this than just octane, but this is a kids-book type illustration to this.

 

[Max]

aaahhhh...cool.