needlez2006

there is a gas station a few miles down the street from me that has two pumps that service only 110 octane fuel. its like 4.30 a gallon but im guessing with 110 octane you would feel a little boost in performance, not to run it all the time but maybe once a month or every two months. any suggestions as to if it would hurt the engine or fuel management, etc. or if it would totally destroy the engine. thanks for your help.

PoWeRtRiP

wouldnt help and might damage your o2 sensors if its leaded. you only should use higher oct if youre running boost, nitrous, or lots of timing advance.

genieman17

damn...i wrote a response and it gave me an error and you beat me to it again...

ravaz

iTrader: (1)

4.30 for 110 octane is a pretty good price.

PoWeRtRiP

man its so odd that this keeps happening. oh well gotcha again we were saying the same thing right

genieman17

yea....basically i gotta stop workin so much and start paying attention more...

Phatmitzu

iTrader: (34)

I think it will give you more than just " a little" in performance. True that higher octane benefits FI applications better. However, it can also do wonderful things to the N/As.

Theres some more info in this thread
https://my350z.com/forum/showthread....threadid=80109

BTW, like ravaz said, $4.30 for 110 octane is a pretty good price. Here in SoCal 100 octane cost $5.xx+...and thats if you can find one.

ares

iTrader: (2)

it would have to be leaded I think. and would hurt the cats/o2 sensors.

aside from that, I dont know if the ecu would notice and advance the timing to even take much benefit from it. and with stock compression of 10.3:1, its up there, but 110 is way way more than it needs. itd be useful if you went to testpipes and high compression piston heads. but I think the novelty of the extra hp would quickly wear off after each 80$ fillup.

100octane would be useful for the track on a near stock Z if you can find it.

genieman17

the computer wont advance timing past stock just because you used higher octane fuel...it would however retard timing if you put in lower octane fuel...if you messed with the timing urself, then there would be a benefit, but on a stock car...putting in anything over 91 is a waste of money...

phoenixZ33

unless the car is knocking, then the ECU will pull lots of timing out. Thoeretically however if the car was running just fine (ie. no knock) with 91, switching to 110 won't do anything except help prevent knock. With 107° and 7% humidity like we have in Arizona, my Z knocks all the frickin time on 91.

genieman17

Yea thats what i said (i think)...does it really knock on 91? thats weird...is that the highest octane you have over there?

ares

iTrader: (2)

they tested 100octane 2 years ago in the first article on the Z in SCC. they got 2 or 3hp from it. but after all this time, we know 2-3hp is well within error range, without multiple tests done, I wouldnt say it really did anything for sure.

I dont remember the conditions of the test though.

needlez2006

i dont mean to sound nagging but do you think a mix of 91 octane along with 110 would do anything to the o2 sensors, like 1/3 110 octane and 2/3 91 ?? thanks

ares

iTrader: (2)

I think anything leaded will hurt them. its a different fuel when you get to 110 and its leaded(which is has to be). I didnt know it either, but this was asked a while back and someone said mixing them doesnt work like that.

zzee

Guys, all I know is that I did put in 110 octane boost in a bottle and added to the tank and within a day, my freakin' "check engine" light came on and only disappeared when I was done with that tank, and into the next full tank of gas only. I do have some mods done to the car, and it seemed like the car ran like s**t.
Stillen exhaust, Stillen headers, RT cats, UR pulley set, Injen CAI, Kinetix 3 plenum, grounding kit.

ravaz

iTrader: (1)

Well, I've used 110 and higher in my Z alot with out any problems and no lights, it was unleaded. zzee, I think maybe it was leaded gas that you put in.

ares

iTrader: (2)

someone had said 110 is always leaded... donno if thats true.

booger

iTrader: (6)

Ive read a few articles on using good paint thinner to raise octane . would be cheaper to do it that way . From what Ive read its perfectly safe to use . [url]www.easyperformance.com