Whats the highest octane rating I can safely use in my stock N55 engine? - BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)

N55_BBM · 11-13-2010, 04:38 PM

Time trailing tomorrow and I'd like to try 100 or 110 fuel, is it doable/safe?

pixelblue · 11-13-2010, 05:45 PM

It's safe but don't bother. First try improve your driving skills i.e. Line, brake points. Race fuel should be the last item on your list

shockin330i · 11-13-2010, 05:50 PM

ms109!

Dackelone · 11-13-2010, 05:52 PM

Quote:

Originally Posted by brunobm

Time trailing tomorrow and I'd like to try 100 or 110 fuel, is it doable/safe?

As long as the fuel is unleaded and low on methanol (<10%) you should be ok.

obnoxious2 · 11-13-2010, 06:56 PM

Race fuel kills your oxygen sensors.

Dackelone · 11-13-2010, 07:19 PM

Quote:

Originally Posted by obnoxious2

Race fuel kills your oxygen sensors.

How so?

As long as said race fuel is unleaded, I think it should be ok. Of course no one knows until you test it in your car!

jojo135 · 11-13-2010, 09:08 PM

Race fuel is bad IF is leaded. If your car is stock, you don't need race fuel though. Higher octane fuel is better for heavily boosted cars because high octane delays detonation. You may not even notice if u put it in there. Buy a chip, put it in, put in race fuel and turn up the boost!

Thaddy · 11-13-2010, 09:35 PM

Unless your car is tuned for 110, don't waste your money. 93 is just fine. If you're really worried about detonation while at the track, put some octane booster in the tank.

RobMason · 11-14-2010, 01:57 AM

Your car would run fine on any super hi octane gas, even leaded. It wouldn't perform noticeable differently. Your catalytic converters would be trashed. Expensive experiment.

ScottK135 · 11-16-2010, 12:43 PM

Quote:

Originally Posted by Thaddy

Unless your car is tuned for 110, don't waste your money. 93 is just fine. If you're really worried about detonation while at the track, put some octane booster in the tank.

+1 I don't think anything higher than 91 or 93 (Whatever is in your area) will benefit you unless you have a tune.

PHANTOM666 · 11-17-2010, 09:55 PM

Yep, tune it and run MS109. More boost = Way more FUN!!!!

11-13-2010, 04:38 PM	#1
N55_BBM Major Drives: 2011 135i Coupe Join Date: May 2010 Location: PA Posts: 1,038 iTrader: (1)	Whats the highest octane rating I can safely use in my stock N55 engine? Time trailing tomorrow and I'd like to try 100 or 110 fuel, is it doable/safe?
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11-13-2010, 05:45 PM	#2
pixelblue Colonel Drives: the silver bullet Join Date: Feb 2010 Location: northern virginia Posts: 2,197 iTrader: (2) Garage List 2010 135i [4.37]	It's safe but don't bother. First try improve your driving skills i.e. Line, brake points. Race fuel should be the last item on your list __________________ "I would quote everything pixelblue said, but you've already read it. Take it from someone who's put the 1 through its paces"

11-13-2010, 05:50 PM	#3
shockin330i Brigadier General Drives: blue Join Date: Jan 2007 Location: f y'all, I'm from Texas (RGV) Posts: 4,208 iTrader: (1)	ms109! __________________ ERnie 2011 AW/e90/n55 12.9@107.53mph *N55 Moderator* I'm crawling similar to a ant cuz I'm low to the earth

11-13-2010, 09:08 PM	#7
jojo135 Private First Class Drives: 09' BMW 135i Join Date: May 2010 Location: northsouth Posts: 191 iTrader: (1)	Race fuel is bad IF is leaded. If your car is stock, you don't need race fuel though. Higher octane fuel is better for heavily boosted cars because high octane delays detonation. You may not even notice if u put it in there. Buy a chip, put it in, put in race fuel and turn up the boost! Last edited by jojo135; 11-13-2010 at 10:32 PM.

11-14-2010, 01:57 AM	#9
RobMason M Power Drives: '09 ///M-Sport 135i Join Date: Nov 2007 Location: San Rafael Posts: 1,471 iTrader: (3)	Your car would run fine on any super hi octane gas, even leaded. It wouldn't perform noticeable differently. Your catalytic converters would be trashed. Expensive experiment. __________________

11-13-2010, 06:56 PM	#5
obnoxious2 New Member Drives: turbos Join Date: Jun 2009 Location: Em Dee Posts: 8 iTrader: (0)	Race fuel kills your oxygen sensors.

11-13-2010, 09:35 PM	#8
Thaddy Second Lieutenant Drives: 2011 135i Join Date: Oct 2010 Location: Pittsburgh Posts: 288 iTrader: (1)	Unless your car is tuned for 110, don't waste your money. 93 is just fine. If you're really worried about detonation while at the track, put some octane booster in the tank.

11-17-2010, 09:55 PM	#11
PHANTOM666 Reaper of Speed Drives: 2010 135i Join Date: Nov 2009 Location: North Carolina Posts: 66 iTrader: (0)	Yep, tune it and run MS109. More boost = Way more FUN!!!!

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