[Young_Man]

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]

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

[Young_Man]

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]

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]

any datalogs?

[idrift4wd]

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]

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