i am trying to see if any one has got any power gain from mixing 100 octane with 91 or 92 because thats all i can find but what would be the best ratio for a gain or is it no use?

 

i personaly wouldent think it would be worth it

 

The higher the octane just allows you to change the timing to get more power, so unless you have hptuners its really not worth it.

 

x2. its not worth putting in unless you can tune for it to get the full advantage

 

there is no such thing as a power mod on the LNF without a tune.........there i said it

 

have you seen how much knock the lnf has stock?!?!

don't open your mouth unless you know the facts.

 

What do you mean knock?

 

if ur goin to use 100octane get ur tank empty so u get all ur money out of it. becuz if ur just gonna mix it use nos octane booster for 10bucks and its a difference for sure just dont use too much or u will mess up ur o2 sensor

 

do NOT run any form of octane booster in this car.

 

i have ran it in my car and no probs just happy as hell with gains

 

What the heck are you even talking about? The lnf is a noisy engine due to the direct injection setup, but one in proper running condition doesn't knock

Maybe if they were running less than 87 octane, or diesel

That being said, a higher octane fuel doesn't give you more power per say.

If an engine is designed and engineered for 91 octane, it will get it's advertised power output at 91 octane. Federal mandates require that any engine be made to run on 87 octane though, so that means that your lnf WILL run on 87. However, to make the engines safely run on 87 octane (ie. to prevent detonation, 'knock') they are calibrated to run with retarded timing if 87 is used. Because of the retarded timing, you get less power running 87 than you would running 91.

As far as I know though, a stock engine won't sense a fuel with an octane rating HIGHER than what it was designed for. In other words, it'll burn your 100 octane fuel just the same as it would burn your 95 octane, or 93 octane, which would be the same as it burns the 91 octane that it's calibrated for.

If you get an aftermarket tune however, you can tell your engine to use more aggressive timing when running on 100 octane, and this would cause the engine to make more power with 100 than it does stock, with 91.

All that being said, I run 93, even though I'm 100% stock Rather lean towards the safe side.

 

cylinder detonation newb.

hi. read this.

a stock LNF will knock between 2-8 degree's on 91 octane. i have the logs to prove it. there is 4 timing tables in the lnf file.

min/max for intake.
min/max for exhaust.
plus the fun cam phasing controls.

614+ tables for the lnf. we have access to 12.

when you know exactly what the **** you're talking about. then i might actually take the time to respond.

 

Area47-been laying out newbs since day one.

lulz.

 

i don't give 2 **** how much knock the LNF has stock, it's been proven already by at least 5 ss/tc vendors that no matter wat power mods you bolt on you won't see any worth while gains from them until u tune them, u might see less power over stock at that point...ie 100octane, maybe u should read my whole post next time *******

 

and the room gets quite lol area 47 shuts them down arguing with area 47

 

i'll argue with anyone i wish even the mods


ps....i said i'd argue, never said a single word about winnin

 

man there's a war in here

you will lose s

 

Umm what area was saying is that higher octane has a greater resistance to knock. Less knock means that the amount of timing the engine is calling for will actually get used. And timing means power... So you were just owned by your own incorrect knowledge.

 

i said things as plain and simple as possible, if u put 100 octane in the LNF stock it won't do *** all for u, that's all i was trying to say.........so ya, go fail somewhere else

 

do you know the definition of octane and how it pertains to fuel?

MaD TyTe DoRiFtO y0.

if said car puts down 240 whp and knocks 3 degree's through out the entire run. 2 gallons into a 13 gallon tank that is half full. do some quick math and you can figure out the final outcome of said octane rating.

if one eliminates the 3 degree's of knock, what happens? oh, you pick up power! i never said anything about going over the 260ftlb mark now did i. the closer one gets to said limit, the faster the car will be.

there are those of us who experiment, then there those who read and believe everything on the internet.

which one do you want to be.

 

iF the LNF is knocking in the 8 degrees mark and you use 100 octane to eliminate that knock.
You are gaining hp/tq, plain and simple.
Why does this motor knock so much?

 

the ones i have messed with all knock to a degree. hell, all gm cars do.

hpt won't give us every single lnf table, so we don't have access to everything. knock vs fuel vs timing vs iat vs manifold pressure vs cam timing. so on and so forth. 75% of the tables get referenced against each other.

 

i wholeheartedly hate the dumb and ignorant like your self.

please re-read the previous posts and gain an understanding of the concepts before you begin to type.


EVERY single OEM IC car you've ever driven in your life to this point, and forward, will knock at any given TPS.

fuel difference, load, temps, ect, ect, ect.

the variable list goes on forever, and due to the VARY simple fact that the OE cal must be able to accommodate any and all driving conditions, this KR will never be avoidable.

the only way to get rid of it, are the fallowing. eaither have the car custom tuned, on the street (not some shitty dyno pull) with the only fuel grade you'll ever run and you'll have to do it at varying times of the year.

or pump a vary high octane fuel into the car at all times to offset the knock often caused by overly rich conditions, and to much spark at to little cylinder mass.

thus, high octane fuel, on a 100% stock car, will always show gains.

at least on any modern era car.


in order to truly tune these cars, those are exactly the table links we need to adjust.

 

ibtl!

 

There will be no lock. The no-it-all newbs are just getting put in their places.