JB4 ISO / FBO / 110+ Octane

Young_Man · 03-02-2013, 11:54 PM

I'm wondering how many of you have been to the track and ran 110+ Octane on your FBO N54's with JB4 ISO and what kind of times did you run?

I'm FBO and went last weekend and best I could do was a 12.6 @ 114mph on Map 7 before I started getting misfires over 4k rpm's. I'm going to be replacing my plugs and hopefully running a better time next week but I still wanted to see what everyone else has been able to run.

Again I'm asking for times for FBO cars with 110+ Octane. No meth, spray etc..

Killerfish2012 · 03-03-2013, 01:31 AM

110 octane is leaded gas, which will destroy your O2 sensors, and cats, very fast. Just FYI

Young_Man · 03-03-2013, 02:51 PM

I have the AA catless downpipes anyway so that wasn't really a concern. Thanks for the heads up on the O2 sensors tho. I'm going to check next time I go back to see if the fuel used was leaded or unleaded. If it was leaded I don't think it did any damage considering I was running a 50/50 mix of 93 and 112

Wedge1967 · 03-03-2013, 03:06 PM

I think you would be better off running some high oct pump and 30% to 50% e85. New plug would also be a plus. Have you tuned on a dyno?

themyst · 03-03-2013, 03:42 PM

any datalogs?

idrift4wd · 03-03-2013, 03:59 PM

lol 110 octane is alot of octane is map 7 made for 110? i thought 100+, and if leaded its pretty bad.

12.6 is not that great for race gas. what was your 60' and tires?

Cobra0963 · 03-03-2013, 04:29 PM

Wow..114...That should put you in the high 11"s shouldn't it?

The N54 (10:1) has a little lower compression ratio than my N52 (10.7:1) my optimum octane rating is right around 97/98. I run a mix of VP100 (unleaded) oxygenated with ethanol and 93 pump fuel and with my mods and tune and I can actually feel the difference over pump 93 and run high 12's 103-105 mph consistent.

102 octane is way to high for your N54 and a waste of money, also stay away from leaded fuels....you'll be sorry if you dont! your cylinders do not need to lubricated with lead let alone anything else, I can go on and on about leaded fuels in modern cars.

You should have better performance with (unleaded) 91/93 and 30/35% E85 on map 5. VP also makes C85 (unleaded) which is all ready blended it is ideal for your N54 and JB4 map 5 rated with Motor octane of 90 and R+M2 98 they make this for modded turbo-charged rides!

http://www.vpracingfuels.com/page469663.html

03-02-2013, 11:54 PM	#1
Young_Man Lieutenant 42 Rep 568 Posts Drives: E90 335i Join Date: Jun 2011 Location: Earth iTrader: (4)	JB4 ISO / FBO / 110+ Octane I'm wondering how many of you have been to the track and ran 110+ Octane on your FBO N54's with JB4 ISO and what kind of times did you run? I'm FBO and went last weekend and best I could do was a 12.6 @ 114mph on Map 7 before I started getting misfires over 4k rpm's. I'm going to be replacing my plugs and hopefully running a better time next week but I still wanted to see what everyone else has been able to run. Again I'm asking for times for FBO cars with 110+ Octane. No meth, spray etc..
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03-03-2013, 01:31 AM	#2
Killerfish2012 Colonel 181 Rep 2,301 Posts Drives: E90 335I, E92 M3 Join Date: Feb 2012 Location: Midwest iTrader: (9)	110 octane is leaded gas, which will destroy your O2 sensors, and cats, very fast. Just FYI __________________ '07 335I w/ Mods '13 X1 Stock '11 X3 K&N
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03-03-2013, 02:51 PM	#3
Young_Man Lieutenant 42 Rep 568 Posts Drives: E90 335i Join Date: Jun 2011 Location: Earth iTrader: (4)	I have the AA catless downpipes anyway so that wasn't really a concern. Thanks for the heads up on the O2 sensors tho. I'm going to check next time I go back to see if the fuel used was leaded or unleaded. If it was leaded I don't think it did any damage considering I was running a 50/50 mix of 93 and 112
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03-03-2013, 03:06 PM	#4
Wedge1967 Banned 125 Rep 2,172 Posts Drives: '07 e92 AT Sport Montego Blue Join Date: Sep 2011 Location: Portland, OR iTrader: (3)	I think you would be better off running some high oct pump and 30% to 50% e85. New plug would also be a plus. Have you tuned on a dyno?
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03-03-2013, 03:42 PM	#5
themyst Major General 189 Rep 6,631 Posts Drives: '16 MK7 GTI Join Date: Feb 2009 Location: NYC iTrader: (8)	any datalogs? __________________ E90 LCI N54 6AT
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03-03-2013, 03:59 PM	#6
idrift4wd Brigadier General 151 Rep 3,549 Posts Drives: Three Hundred and Thirty Five Join Date: Jul 2010 Location: Yonkers NY iTrader: (0) Garage List 2007 BMW [7.00]	lol 110 octane is alot of octane is map 7 made for 110? i thought 100+, and if leaded its pretty bad. 12.6 is not that great for race gas. what was your 60' and tires?
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03-03-2013, 04:29 PM	#7
Cobra0963 Private 0 Rep 81 Posts Drives: 2015 M4 F82 Join Date: Dec 2012 Location: Boca Raton, Florida iTrader: (0)	Wow..114...That should put you in the high 11"s shouldn't it? The N54 (10:1) has a little lower compression ratio than my N52 (10.7:1) my optimum octane rating is right around 97/98. I run a mix of VP100 (unleaded) oxygenated with ethanol and 93 pump fuel and with my mods and tune and I can actually feel the difference over pump 93 and run high 12's 103-105 mph consistent. 102 octane is way to high for your N54 and a waste of money, also stay away from leaded fuels....you'll be sorry if you dont! your cylinders do not need to lubricated with lead let alone anything else, I can go on and on about leaded fuels in modern cars. You should have better performance with (unleaded) 91/93 and 30/35% E85 on map 5. VP also makes C85 (unleaded) which is all ready blended it is ideal for your N54 and JB4 map 5 rated with Motor octane of 90 and R+M2 98 they make this for modded turbo-charged rides! http://www.vpracingfuels.com/page469663.html Last edited by Cobra0963; 03-04-2013 at 05:23 PM..
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