Race Gas

370zFORme!! · 03-13-2010, 08:21 PM

So I went to newport beach to buy race gas today. That's right 100 octane!!

Well $108

later the pump automatically stops, so I top it off just to be sure.
Get in my car, drive away and my gas measurement didn't go all the way up. The last light didn't light up. Weird, but anyway I gotta say, I can really tell the difference in Race Gas. Not like a performance boost, but just snappier and the throttle seemed a lot more responsive. Love it! Between the $100 oil changes and the $100 gas fill-ups, I'm gonna have to get a second job

SmoothZ · 03-13-2010, 08:42 PM

Last time I bought race gas, I paid about $2 a gallon. Yeah, it was a looooong time ago.

kdoske · 03-13-2010, 09:24 PM

Well the ECU does adjust certain things based on the quality of the gas so I suppose it is possible to see certain subtle difference when race gas is put in. Seems like a waste of money to me, but hey--why not!

NYBladeZ · 03-13-2010, 09:32 PM

lol, daily driving with race gas, hey if I could afford it I'd do it.

370zFORme!! · 03-13-2010, 09:59 PM

Ya I just wanted to try it out once, but now that I feel the difference, I might never go back to 91

NYBladeZ · 03-14-2010, 12:37 AM

ewww 91, we don't use that sh!t on the east coast

370zFORme!! · 03-14-2010, 12:38 AM

Quote:

Originally Posted by NYBladeZ

ewww 91, we don't use that sh!t on the east coast

I know but that's all we can get here in CA, besides the occasional station that carries 100.

ChrisSlicks · 03-14-2010, 09:09 AM

100 octane race gas is oxygenated, so yes it should perform better but octane proper only plays a small role.

Togo · 03-14-2010, 09:09 AM

I did the 100 oct once or twice in my bike but that only took $25 too fill up at the time. I didn't really notice a difference other than my exhaust smell had a sweeter scent to it.

ChrisSlicks · 03-14-2010, 09:17 AM

Quote:

Originally Posted by Togo

I did the 100 oct once or twice in my bike but that only took $25 too fill up at the time. I didn't really notice a difference other than my exhaust smell had a sweeter scent to it.

You have to re-tune the A/F ratio to get the best performance, so you need an ECU that will do this automatically. If your bike had a manual tune you could have adjusted that.

Togo · 03-14-2010, 09:21 AM

Quote:

Originally Posted by ChrisSlicks

You have to re-tune the A/F ratio to get the best performance, so you need an ECU that will do this automatically. If your bike had a manual tune you could have adjusted that.

I have a PCIII installed with a custom tune on my current setup but for pump gas (93) so yeah, I didn't really expect much of a difference when I did it.

TheSnakeJake · 03-14-2010, 09:59 AM

unless you have a custom tune for the race gas, you are just wasting your money...

370zFORme!! · 03-14-2010, 10:58 AM

I'm not fighting the fact that it's a bit expensive, I would just rather put a mix of 100 and 91 to blend to like maybe 94 or 95 so that it's a little easier on my engine, rather than running on 91 all the time. I know our cars can run on 91, I just would like to give my engine a little bit more to chew on ya know?

SmoothZ · 03-14-2010, 12:09 PM

Quote:

Originally Posted by TheSnakeJake

unless you have a custom tune for the race gas, you are just wasting your money...

370zFORme!! · 03-14-2010, 01:02 PM

Update: I dont know if this is related at all or not, but the tapping noise that was coming from my injectors is now gone even after oil temps reach operating temp. Could this have anything to do with higher octane gas quieting the injectors?

03-13-2010, 08:21 PM	#1 (permalink)
370zFORme!! Premium Member Join Date: Mar 2010 Location: SoCal Posts: 1,459 Drives: 2012 6MT STiffy Rep Power: 17	Race Gas So I went to newport beach to buy race gas today. That's right 100 octane!! Well $108 later the pump automatically stops, so I top it off just to be sure. Get in my car, drive away and my gas measurement didn't go all the way up. The last light didn't light up. Weird, but anyway I gotta say, I can really tell the difference in Race Gas. Not like a performance boost, but just snappier and the throttle seemed a lot more responsive. Love it! Between the $100 oil changes and the $100 gas fill-ups, I'm gonna have to get a second job

03-13-2010, 08:42 PM	#2 (permalink)
SmoothZ A True Z Fanatic Join Date: Nov 2009 Location: Arrakis Posts: 7,952 Drives: giant sandworm Rep Power: 35	Last time I bought race gas, I paid about $2 a gallon. Yeah, it was a looooong time ago. __________________ "Once you go Asian, you never go Caucasian." "I talk to myself, and when I do that, I know I'm talking to an intelligent person."

03-13-2010, 09:32 PM	#4 (permalink)
NYBladeZ A True Z Fanatic Join Date: Apr 2009 Location: New York Posts: 2,158 Drives: Lotus Exige S Rep Power: 20	lol, daily driving with race gas, hey if I could afford it I'd do it. __________________ 2009 Carbon Fiber/Red 370z aka Trish: Sports Package, Meisterschaft full catback, Fast Intentions Longtube Headers, Injen Long Tube Intakes, UpRev Tune: Sold 2008 Lotus Exige S Club Racer aka Bella, always leaves me smiling

03-14-2010, 12:37 AM	#6 (permalink)
NYBladeZ A True Z Fanatic Join Date: Apr 2009 Location: New York Posts: 2,158 Drives: Lotus Exige S Rep Power: 20	ewww 91, we don't use that sh!t on the east coast __________________ 2009 Carbon Fiber/Red 370z aka Trish: Sports Package, Meisterschaft full catback, Fast Intentions Longtube Headers, Injen Long Tube Intakes, UpRev Tune: Sold 2008 Lotus Exige S Club Racer aka Bella, always leaves me smiling

03-14-2010, 09:09 AM	#9 (permalink)
Togo A True Z Fanatic Join Date: May 2009 Location: E. Northport, NY Posts: 7,597 Drives: Stuff Rep Power: 657	I did the 100 oct once or twice in my bike but that only took $25 too fill up at the time. I didn't really notice a difference other than my exhaust smell had a sweeter scent to it. __________________ This will decimate all after you put about fifteen grand in it or more, and if we have to, overnight parts from Japan. Joe Clem and Koeppel Nissan

03-13-2010, 09:24 PM	#3 (permalink)
kdoske Track Member Join Date: Jul 2009 Location: Louisiana Posts: 541 Drives: 800whp Unicorn FI Z Rep Power: 16	Well the ECU does adjust certain things based on the quality of the gas so I suppose it is possible to see certain subtle difference when race gas is put in. Seems like a waste of money to me, but hey--why not!

03-13-2010, 09:59 PM	#5 (permalink)
370zFORme!! Premium Member Join Date: Mar 2010 Location: SoCal Posts: 1,459 Drives: 2012 6MT STiffy Rep Power: 17	Ya I just wanted to try it out once, but now that I feel the difference, I might never go back to 91

03-14-2010, 09:09 AM	#8 (permalink)
ChrisSlicks A True Z Fanatic Join Date: Mar 2009 Location: North East Posts: 6,203 Drives: 09 370Z Sport M6 Rep Power: 653	100 octane race gas is oxygenated, so yes it should perform better but octane proper only plays a small role.

03-14-2010, 09:59 AM	#12 (permalink)
TheSnakeJake Base Member Join Date: Feb 2010 Location: Cincinnati Posts: 84 Drives: none Rep Power: 15	unless you have a custom tune for the race gas, you are just wasting your money...

03-14-2010, 10:58 AM	#13 (permalink)
370zFORme!! Premium Member Join Date: Mar 2010 Location: SoCal Posts: 1,459 Drives: 2012 6MT STiffy Rep Power: 17	I'm not fighting the fact that it's a bit expensive, I would just rather put a mix of 100 and 91 to blend to like maybe 94 or 95 so that it's a little easier on my engine, rather than running on 91 all the time. I know our cars can run on 91, I just would like to give my engine a little bit more to chew on ya know?

03-14-2010, 01:02 PM	#15 (permalink)
370zFORme!! Premium Member Join Date: Mar 2010 Location: SoCal Posts: 1,459 Drives: 2012 6MT STiffy Rep Power: 17	Update: I dont know if this is related at all or not, but the tapping noise that was coming from my injectors is now gone even after oil temps reach operating temp. Could this have anything to do with higher octane gas quieting the injectors?

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