Non-Oxygenated vs Oxygenated Fuel

BQTuning · 08-18-2012, 08:44 PM

Well I decided to be the guinea pig for VP Racing to try out their new C9 Ethonal Free 96 Octane race fuel that is non-oxygenated

I had less than a quater tank of Shell V before i added 5 gallons of the C9. The perfomance of the car was very noticeable especially in South Florida heat.

I was so impressed the next day i went back to VP to fill it up and to get a good fuel system cleaning.

Two days later I went to start my car and yes sirrrr, lonnnnnnng cold start cranks

HPFP ? NOOOOOOOO !

after getting the car started everything was fine, but when i turned the car off for more than 10 minutes it was a wonder if I will need to call a tow truck.

Good thing I had to drive some distances for the next 2 days. When the gas got to a quarter tank I filled it up with Shell V again.

After some long driving and a day no more long cranks.

When mixing car performed great
When running straight non-oxygenated fuel your going to have a nightmare

Just some heads up. Always make sure the race gas your select is:

Unleaded (for most),
and Oxygenated

LivnLife31 · 08-18-2012, 09:17 PM

You should always be running oxygenated fuel!

type rrr · 08-19-2012, 08:17 AM

i v used sonoco 98 oct fuel,---no problem

and 104 sonoco oxygenated, and no problem...

no mix

Dieselmd · 08-19-2012, 09:29 AM

Question? Oxyengated fuels have a higher combustion rate. Will that not put more stress on our fuel pumps?

BQTuning · 08-19-2012, 05:11 PM

Quote:

Originally Posted by type rrr

i v used sonoco 98 oct fuel,---no problem

and 104 sonoco oxygenated, and no problem...

no mix

The Sunoco 98 oct you are talking about must be the 260 GTX non-oxygenated.

Did you run this straight ? Meaning absolutely NO oxygenated mix with it ? Even atleast 10% oxygenated is still not running straight. Did you refill mutiple times on the 260 GTX consecutively ?

Quote:

Originally Posted by Dieselmd

Question? Oxygenated fuels have a higher combustion rate. Will that not put more stress on our fuel pumps?

No

type rrr · 08-19-2012, 05:59 PM

Quote:

Originally Posted by BuraQ

The Sunoco 98 oct you are talking about must be the 260 GTX non-oxygenated.

Did you run this straight ? Meaning absolutely NO oxygenated mix with it ? Even atleast 10% oxygenated is still not running straight. Did you refill mutiple times on the 260 GTX consecutively ?

No

yes about 10 gallon(2 times ) of 98 straight , no mix (gt260)
10 gallon (2 times) of 104 straight,no mix (gt260 plus )

next step wiil be the vp ms109,with more agressive timing top out 14 degrees

08-18-2012, 08:44 PM	#1
BQTuning Banned 469 Rep 4,392 Posts Drives: 2012 Z4 sDrive35i M Sport 6MT Join Date: Nov 2010 Location: bq@bqtuning.com iTrader: (0)	Non-Oxygenated vs Oxygenated Fuel Well I decided to be the guinea pig for VP Racing to try out their new C9 Ethonal Free 96 Octane race fuel that is non-oxygenated I had less than a quater tank of Shell V before i added 5 gallons of the C9. The perfomance of the car was very noticeable especially in South Florida heat. I was so impressed the next day i went back to VP to fill it up and to get a good fuel system cleaning. Two days later I went to start my car and yes sirrrr, lonnnnnnng cold start cranks HPFP ? NOOOOOOOO ! after getting the car started everything was fine, but when i turned the car off for more than 10 minutes it was a wonder if I will need to call a tow truck. Good thing I had to drive some distances for the next 2 days. When the gas got to a quarter tank I filled it up with Shell V again. After some long driving and a day no more long cranks. When mixing car performed great When running straight non-oxygenated fuel your going to have a nightmare Just some heads up. Always make sure the race gas your select is: Unleaded (for most), and Oxygenated
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08-18-2012, 09:17 PM	#2
LivnLife31 Banned 51 Rep 420 Posts Drives: 2009 E90 N54 TiAg Join Date: Aug 2011 Location: South Florida iTrader: (2) Garage List 2009 335i Sedan [1.00]	You should always be running oxygenated fuel!
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08-19-2012, 08:17 AM	#3
type rrr Second Lieutenant 12 Rep 232 Posts Drives: 335i coupe Join Date: Apr 2012 Location: montreal canada iTrader: (0)	i v used sonoco 98 oct fuel,---no problem and 104 sonoco oxygenated, and no problem... no mix __________________ 2007 335i coupe AT-- I80AS--FBO -stock turbos--COBB v402 beta stage 2 + ATR-- NITTO'S 275-40-17 NT05R --- 12.025 @ 120 mph -- full weight
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08-19-2012, 09:29 AM	#4
Dieselmd Private 9 Rep 95 Posts Drives: MW SO M4 DCT. EB M235i Join Date: Oct 2011 Location: United States iTrader: (1)	Question? Oxyengated fuels have a higher combustion rate. Will that not put more stress on our fuel pumps?
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