RCZ's 370Z Journal.

RCZ · 05-14-2009, 12:18 PM

Of course Im kidding. Im kinda sad today... Im about to run out of gas from the tank I filled up over the weekend with 108 Octane race gas....

ChrisSlicks · 05-14-2009, 12:33 PM

Quote:

Originally Posted by RCZ

Of course Im kidding. Im kinda sad today... Im about to run out of gas from the tank I filled up over the weekend with 108 Octane race gas....

Interesting ... did the car respond well to the race gas?

wstar · 05-14-2009, 12:54 PM

I wouldn't expect it to without a tune. The MAS/MAF whatever in the intakes and the A/F meters in the headers can retune for a lot of things, but I don't think they're capable of retuning themselves for higher octane. I would suspect all it does it buy you extra insurance against knock/detonation.

MightyBobo · 05-14-2009, 12:55 PM

Quote:

Originally Posted by wstar

I wouldn't expect it to without a tune. The MAS/MAF whatever in the intakes and the A/F meters in the headers can retune for a lot of things, but I don't think they're capable of retuning themselves for higher octane. I would suspect all it does it buy you extra insurance against knock/detonation.

x2

Dont forget the wonderful race gas smell, too...mmmmmmm...

ChrisSlicks · 05-14-2009, 01:59 PM

Quote:

Originally Posted by MightyBobo

Dont forget the wonderful race gas smell, too...mmmmmmm...

LOL, maybe he was just enjoying getting high on the fumes

I was also under the impression that the car only "detuned" for low octane to prevent knock. If it can up-tune as well that would be really cool.

wstar · 05-14-2009, 03:00 PM

I think the issue there is that the car doesn't have any way to 'sense' the increased octane to account for it. It can sense too little octane, but only the hard/indirect way, by noticing knock and backing off to eliminate it.

Hence the need for a different flash/tune to take advantage of race gas. One of the things I like about the UpRev stuff I was reading is that they can store up to 5 maps in your reflash and you can switch them via the cruise control buttons without reflashing again. You can have an easy-going map for light driving and/or questionable fuel, an all-out on 93 pump gas map, a 108 race gas map, a valet map, etc.

semtex · 05-14-2009, 03:08 PM

Quote:

Originally Posted by wstar

One of the things I like about the UpRev stuff I was reading is that they can store up to 5 maps in your reflash and you can switch them via the cruise control buttons without reflashing again. You can have an easy-going map for light driving and/or questionable fuel, an all-out on 93 pump gas map, a 108 race gas map, a valet map, etc.

Really? You sure you're not thinking of Cobb? It'd be cool if UpRev can do this.

azn370z · 05-14-2009, 09:00 PM

Quote:

Originally Posted by ChrisSlicks

Interesting ... did the car respond well to the race gas?

XXX Racing Fuel Gains 14whp on Stock 370Z : Injected Performance Blog

We had a chance to test XXX Racing Fuel’s new 138 oxygenated blend in our Nissan 370Z. After making a few pulls to get a consistent baseline on our 370Z (260whp), we added 5 gallons of oxygenated XXX race gas. The result was 274whp, an impressive 14whp gain.

Not the same race gas that rcz put in his z.

ChrisSlicks · 05-14-2009, 09:32 PM

Those are impressive gains for just fuel, it implies that the car is able to up-tune itself. It may continue to advance timing until it detects a knock.

05-14-2009, 12:54 PM	#3 (permalink)
wstar A True Z Fanatic Join Date: Mar 2009 Location: Houston, TX Posts: 4,024 Drives: too slow Rep Power: 3596	I wouldn't expect it to without a tune. The MAS/MAF whatever in the intakes and the A/F meters in the headers can retune for a lot of things, but I don't think they're capable of retuning themselves for higher octane. I would suspect all it does it buy you extra insurance against knock/detonation. __________________ 7AT Track Car! Journal thread / Car setup details

05-14-2009, 03:00 PM	#6 (permalink)
wstar A True Z Fanatic Join Date: Mar 2009 Location: Houston, TX Posts: 4,024 Drives: too slow Rep Power: 3596	I think the issue there is that the car doesn't have any way to 'sense' the increased octane to account for it. It can sense too little octane, but only the hard/indirect way, by noticing knock and backing off to eliminate it. Hence the need for a different flash/tune to take advantage of race gas. One of the things I like about the UpRev stuff I was reading is that they can store up to 5 maps in your reflash and you can switch them via the cruise control buttons without reflashing again. You can have an easy-going map for light driving and/or questionable fuel, an all-out on 93 pump gas map, a 108 race gas map, a valet map, etc. __________________ 7AT Track Car! Journal thread / Car setup details

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Edmonton Journal Review of the 370Z	BanningZ	Nissan 370Z General Discussions	13	08-09-2009 05:44 PM

05-14-2009, 12:18 PM	#1 (permalink)
RCZ A True Z Fanatic Join Date: Nov 2008 Location: Miami Posts: 6,403 Drives: '09 370Z Rep Power: 1120	Of course Im kidding. Im kinda sad today... Im about to run out of gas from the tank I filled up over the weekend with 108 Octane race gas....

05-14-2009, 09:32 PM	#9 (permalink)
ChrisSlicks A True Z Fanatic Join Date: Mar 2009 Location: North East Posts: 6,203 Drives: 09 370Z Sport M6 Rep Power: 655	Those are impressive gains for just fuel, it implies that the car is able to up-tune itself. It may continue to advance timing until it detects a knock.