Orginally I'm from the east coast, Is there anywhere in the bay area where you can get higher than 91 octane gas?

 

I've done alot of research on this . 14gals. 91octain and mix 3gals of 100 octain. For a short time 14gals 91 -to 1gal. 110octain more is NOT better it can do damage.

 

u knoe that it does nothing for our car to run anything above 91 unless ur seriously NA or FI, the octane rating is just the volitily of the gas, as u go higher in octane the less chance u have of detanation thats it....

 

theres a 100 octane in san jose... Unocal76 i think... kinda pricey tho

 

What do you say about ~7whp gain across the board with just 100 octane as shown by a respectable auto publication ?

 

I'd say thats the most expensive 7whp you'll ever buy. Seeing as its a couple dollars more a gallon for 100 Octane, and you have to keep filling up with that every time you want that extra boost

 

No doubt about that

Q_350Z_USAF,

Infineon Raceway off of CA-37 is a good source for high octane. They have a pump with 91,96 and 100 unleaded. Last one being around 4.50/gallon.

 

ur saying that a stock car that is supposed to run 91 is seeing a 7WHP gain wit using 100?? could u show me a link to that or something plz
im not doubting it i just cant see how the increase in octane would produce such a responce in power...

 

With the mix Iposted above (never mind how I drive ) I was getting 15.3 / 23 MPG w/ mix (driving the same way ) I'm getting-18.7 / 27.2. lets call it 3.5more MPG x 20gals =70 more miles per tank full.----

 

Actually the computer adjust to get the most out of the octane that it can by advancing and retarding the timing based on when the onset of pinking occurs.

There are limits to this in both directions, too low of octane and it's gonna ping regardless and too high and it runs out of benefits.

Be careful running leaded race gas, lead will damage the O2 sensors as well as the catalytic converters.

Where is this mysterious Unical 76 in San Jose?

Chris

 

Almaden & Foxworthy, last I saw it was around $4.33/gallon. With my '01 Maxima, on real hot days, when she was lugging or pinging a little, I would toss a tank or two and the pinging would disappear at once. Since I own a '05 Z, purchased in Nov '04, I cannot relate how my Z will perform when it is 100 degrees outside. I threw a tank in at around 2500 miles and my Z sounded real sweet, but that was before my header, exhaust & JWT intake install. Now she sounds like a beast, a car that wants to get in front of your windshield real quick. Any how, I don't make it a real habit to toss in 100 proof fuel, but I do make it a habit to use Chevron's 91 whenever possible. Thanks for reading all this, rich, San Jose, CA.

 

I don't remember which car magazine did this test. Search forum-wide and you'd find it.

I filled up with high octane many times and posted wonderfull results performance and economy wise, but every time I would get flamed on FA and g35driver for that. ECU reset right after the fillup helps a lot as well. My G-tech regstered 0.3 sec difference in 0-60mph acceleration before and after.

 

On a similar note, my old 97 DOHC Neon owners guide said it could run on any grade gas but if you wanted the rated 150hp it must be run on 91 and above.
Gas made little difference on a day to day basis with that car but I always put 91 in anyway. So one day I am going over the hill into Santa Cruz and it feels sluggish. I had done the drive many times so I knew how it should have felt and I was thinking maybe the engine was finally starting to go, after all it was a 75k and a Dodge. Then I remembered my wife had my car at some point that last week. Sure enough, when I asked her, she said she had put regular unleaded in.

It was a complete blind study, I did not even know she put gas in it, but I could sure feel the difference.

Chris

 

0.3 is huge........I could blow away Sean with that number. (mid 13's)

I am guessing it would take a tank for the ECU to adjust. Anyone know about that?

Jack.......I'm already getting that kind of gas milage on 91 octane and I have a differential that is not exactly good for gas milage. You can't be driving any harder than me.

 

I drive a sedan, so in my case it was 6.5 to 6.2sec improvement.

I tend to think that right after the reset ECU uses the most agressive map.

 

TO # 1) I have been running the 3/14 mix for some time ,it didn't take a full take to feel the added (I'll us the word) help. tock about 100miles w/ the mix & about 100miles for the Ingen SES & intake to get there help. my 2 cents.

to # 2) "O"

 

If it only "tock" 100 miles ...............did you dyno it to know the difference?

You are reasonably clear, so am I misunderstanding you.

 

[QUOTE]Originally posted by fowlman01
[B]If it only "tock" 100 miles ...............did you dyno it to know the difference?

not yet

1ST one to notice.

 

the gas mix info came from the guy that works w/ the Nascar peeps to get the mix on the track right . 76 Gas has sold and they sold the racing gas div. to the peeps that where there management team.for racing fuel mix's. did this to keep the post alive.

 

it did for this peeps.............