is it safe to turn 100 octane on my stock si at the track?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by I Quarantined I &raquo;</TD></TR><TR><TD CLASS="quote">is it safe to turn 100 octane on my stock si at the track?</TD></TR></TABLE>

Safe? Yes. Is there any reason to? No.

 

if its unleaded it wouldn't hurt it, it would also clean up your injectors a little. if it's a stock si you really wouldn't be able to tell that big of difference. But it sure smells good when you burn it though.

 

How about for a jdm itr engine? Stock?

I run 94 octane now.

 

it will help a little but not a whole hell of alot

 

it would probably hurt performance. 100 octane will be a slow burn... unless you retune your fuel and advance your ignition maps, i don't think it will help at all.

 

Ndogg is completely right. Unless your vehicle needs 100 octane it will most likely hurt you more than help you. 100 octane does burn slower and unless your motor really needs it you are better off with 94 on a Type-R motor. For like a D16 I would run 87. You will see more power with 87 than with 91.

 

it wont make any difference.
For the person who made the post, do you have any idea why people use race gas? or are you one of those people that buys plug wires and considers them an updgrade?

Unless you have some real mods, that can benefit from the timing advance that the race gas will allow you its not worth the effort.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by itr206 &raquo;</TD></TR><TR><TD CLASS="quote">it wont make any difference.
For the person who made the post, do you have any idea why people use race gas? or are you one of those people that buys plug wires and considers them an updgrade?

Unless you have some real mods, that can benefit from the timing advance that the race gas will allow you its not worth the effort. </TD></TR></TABLE>

my thoughts exactly...

 

yo *** it was a question...i just wanted to know if it would hurt my car or not cuz someone i know with the same car told me i should run it i should go faster but i didnt know if it was safe or not...but thanks for your comments and 2 cents

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Rtype16 &raquo;</TD></TR><TR><TD CLASS="quote">Ndogg is completely right. Unless your vehicle needs 100 octane it will most likely hurt you more than help you. 100 octane does burn slower and unless your motor really needs it you are better off with 94 on a Type-R motor. For like a D16 I would run 87. You will see more power with 87 than with 91.</TD></TR></TABLE>

never knew that, how does that work? i used 100 in my slightly modded H22 and felt a slight difference

 

probably the placebo effect.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Rtype16 &raquo;</TD></TR><TR><TD CLASS="quote">Ndogg is completely right. Unless your vehicle needs 100 octane it will most likely hurt you more than help you. 100 octane does burn slower and unless your motor really needs it you are better off with 94 on a Type-R motor. For like a D16 I would run 87. You will see more power with 87 than with 91.</TD></TR></TABLE>


How does it hurt you??

 

peak cylinder pressure will come too late in the stroke for max power. unless you tune for race gas (increase timing).

 

plus 100 octane is doo mdan expensive!!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Matt5745767 &raquo;</TD></TR><TR><TD CLASS="quote">never knew that, how does that work? i used 100 in my slightly modded H22 and felt a slight difference</TD></TR></TABLE>

Thats because your wallet was lighter giving you a better power / weight ratio. Higher octane will hurt you on a stock car. Stick to whats recommended. Your not going to gain power by running a high octane on a stock car. Guys who fill up stock cars with 94 are idiots and wasting their money.

Higher octane burns slower and as a result a stock car will make less HP because it's taking longer to get a complete burn. When that complete burn happens your too far after TDC and the power isn't being applied to the piston at the right time.

 

been curious about this..... some people run higher octane than need but what happens if they try to run a hotter plug with it also, or run 87 oct with a hot plug but raise theyre FPR? whats the effects with these diff combos?

 

get some VP U4 gas or some VP MRX01 gas i bet u will pickup a few hp lol

 

How about 115 octane race gas on a gsr with 75 shot of nos