I am currently running 96 octane,
is there such thing as too high of an octane or am i ok at 96?
I live in the high desert and i was told hotter weather for s2000s requires higher octane..
Just wanted to verify this..

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Jordan_Cohen18 &raquo;</TD></TR><TR><TD CLASS="quote">I am currently running 96 octane,
is there such thing as too high of an octane or am i ok at 96?
I live in the high desert and i was told hotter weather for s2000s requires higher octane..
Just wanted to verify this..</TD></TR></TABLE> I dont know a whole lot about gas. I know if your car is made for 92octane and you put 100-105 youre gonna miss fire.... The gas burns slower...

 

s2000 are made for 93 i believe.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Jordan_Cohen18 &raquo;</TD></TR><TR><TD CLASS="quote">s2000 are made for 93 i believe.
</TD></TR></TABLE> Youll be fine with 92. I live in chicago and some gas stations dont have 93. I know in arizona they dont have 93 at all.

 

i know that but what im asking is, can i run 96 safely?

 

and i told you I don't know.... google it.... 90% of the time youll get a faster answer with google unless your posting with in 9-5 M-F

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HondaKyle &raquo;</TD></TR><TR><TD CLASS="quote"> Youll be fine with 92. I live in chicago and some gas stations dont have 93. I know in arizona they dont have 93 at all.</TD></TR></TABLE>

is there's different between jdm and the usdm ecm map?

the jdm motor does rated 10 more ponies tho

 

Most likely more aggressive ignition timing, they have higher octane on the other side of the pond so they can run more compression/more timing than we can with no ill effects.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Jordan_Cohen18 &raquo;</TD></TR><TR><TD CLASS="quote">I am currently running 96 octane,
is there such thing as too high of an octane or am i ok at 96?
I live in the high desert and i was told hotter weather for s2000s requires higher octane..
Just wanted to verify this..</TD></TR></TABLE>

Yes. Wrong.

Your ECU is tuned to run on 91 AKI....why the hell do you need 96??? just because its hotter? Get a larger radiator then if your trying to keep your engine cool...plus, you look like a retard with the way gas prices are...not to mention you are getting absolutly no benifit, and possibly damaging your car.

run 91-93 ONLY. end of story. If you were boosted, it may be a different story.

 

where are you finding 96 octane in california?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by iam7head &raquo;</TD></TR><TR><TD CLASS="quote">

is there's different between jdm and the usdm ecm map?

the jdm motor does rated 10 more ponies tho </TD></TR></TABLE> The JDM motor has higher compression...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Techno Tonis &raquo;</TD></TR><TR><TD CLASS="quote">

Yes. Wrong.

Your ECU is tuned to run on 91 AKI....why the hell do you need 96??? just because its hotter? Get a larger radiator then if your trying to keep your engine cool...plus, you look like a retard with the way gas prices are...not to mention you are getting absolutly no benifit, and possibly damaging your car.

run 91-93 ONLY. end of story. If you were boosted, it may be a different story.</TD></TR></TABLE>


you do know that a richer/higher octane mixture of gas will decrease cylinder temperatures. up to a certain amount of course!!!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HondaKyle &raquo;</TD></TR><TR><TD CLASS="quote"> The JDM motor has higher compression... </TD></TR></TABLE>

and a different ecu.

To the op I run 93 90 percent of the time and 92 if i can find 93. So far so good.

 

96 oct will be fine. The ecu can handle it, the o2 sensors should be fine too. For awhile.

 

The point of it is, it's not damaging anything.

It is however hurting performance. The nature of higher octane slowing the combustion process by being a more stable fuel decreases the violence of the explosion and kills power. You will make the most power off the lowest octane you can run without detonating.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Jay_Sensing &raquo;</TD></TR><TR><TD CLASS="quote">The point of it is, it's not damaging anything.

It is however hurting performance. The nature of higher octane slowing the combustion process by being a more stable fuel decreases the violence of the explosion and kills power. You will make the most power off the lowest octane you can run without detonating.</TD></TR></TABLE> thank you! thank you!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Jay_Sensing &raquo;</TD></TR><TR><TD CLASS="quote">The point of it is, it's not damaging anything.

It is however hurting performance. The nature of higher octane slowing the combustion process by being a more stable fuel decreases the violence of the explosion and kills power. You will make the most power off the lowest octane you can run without detonating.</TD></TR></TABLE>

Octane rating has no direct impact on the deflagration (burn) of the air/fuel mixture in the combustion chamber. Other properties of gasoline and engine design account for the manner at which deflagration takes place. In other words, the flame speed of a normally ignited mixture is not directly connected to octane rating.

 

Ok, post your proof. Yes, there are more factors than just that including oxygenation of the fuel but octane is a good standard to go by without trying to get into physics. If you put 110 in a car with a stock ECU, it will slow down. Why? Ignition is completing in the 18-20 degree ATDC vice the are with the most power 13 or so.

 

Without spending 2 hours typing out the way I was taught (which everyone learns different things from different people, the end result from a competent teacher is usually the same), this is a quick down and dirty from a google search with the general points I was taught when learning to build engines. Granted, his area of peak cylinder pressure and the way I was taught are 2 degrees off, the majority of it is close enough.

http://www.factorypro.com/tech....html

 

octane ratings are based off of at what point will the compression of the gasoline make it ignite before the spark plugs fire. so the lower the octane the lower the "ignition rating." our cars require 93 because of the high compression. since it compresses more then say a d series motor you have to run a octane that won't precombust.