Tenacious

I have tried tons of octane boosters, everything on the shelf, The best I have used so far is the "Lucas Performance Racing" octane booster, I noticed a difference right away, in between each octane booster product, I fill up the tank w/ regular 93octane, to possibly use up and of the old stuff. The Lucas Performance Octane booster has given a noticable differance, I dont know about the actual +octane, but I could sure feel it, and my car ran quite abit nicer. Anyone else know of any other good octane boosters?


Btw the Lucas Performance octane booster actually says on the back "Safe for Rotary Engines" that kinda turned me on that they actually mentioned our cars ><

Jdot

I know this thread had some good reading about octane boosting.

https://www.rx7club.com/rotary-car-performance-77/what-kinda-octane-boost-do-u-use-toulene-xylene-etc-339648/

Alpine

torco is the best

rynberg

NONE of the on-the-shelf octane boosters do DICK, including the Lucas product. NONE of them even raise the octane by 1 point.

There is also no way you could "feel" a difference, as neither the stock ecu nor any kind of aftermarket ecu will automatically increase timing and pull fuel in response to higher octane levels, which is the ONLY way you will get more power.

Sorry, it's all in your head. Quit wasting the money and be happy you get 93 octane. Some of us can only get 91.

Alpine

http://www.torcoracefuels.com/catalo...products_id=28

one can of torco mmt concentrate mixed with 10gallon of 91 cali. gas produces 96 octane(ron+mon/2), this has been independently verified by a lab see below. Downside is that combusted manganese is a neuro toxin

spekdah

We have 98 octane from BP over here on pump, I deffinatly feel the difference

scratchjunkie

^ very interesting. i might have to look into this now.

cardzrule

Your 98 is about like our 94 but with less quality control bro

I found this on yahoo search
http://www.btinternet.com/~madmole/R...RONMONPON.html

rynberg

That's not what I would call an off-the-shelf product....even so, it would only raise the octane to 93-94 with a full tank of gas -- for $23! yikes. And it makes nasty emissions too.

And despite what any of you say you FEEL, there is no significant change in power or torque when running a higher octane fuel if the ecu is not tuned for it. Sorry, but the brain has amazing powers of self-deception.

Spekdah, as cardzrule pointed out, your fuel is rated RON only. It would be about 93-94 octane in the US.

EDIT -- BTW, I have quite a bit of experience with running 100 octane unleaded at the track -- over a dozen events with over 100 miles driven per event on the track. I've never felt any difference...

cardzrule

k, I gotta question then that I didnt find by searching. If high octane is only for knocking, then what would that have to do with FEEL anyway? I mean, if the engine isnt knocking with 93 octane, and then you run it on 100 octane and there still isn't any detonation, then what is there to FEEL? Wouldnt it feel the same either way but just cost more money?

PS I know it would feel different if the engine were knocking with 93 and then it got cured with 100 so Im not asking that.

rynberg

YES! My point exactly!

cardzrule

thanx lol

pianoprodigy

When my car was in the body shop, I went to check on it, and saw a guy checking out my car. I mentioned that it had 110 octane in it, as I had come from the dyno when the dumb bitch hit me. He says, "Oh yeah, one of my customer runs that in his Ferrari all the time. He loves it." I respond, "What does he love about it?" "It just runs better." I didn't even bother trying to argue with him. The crazy thing is, the guy said that he WORKS on the cars, as in a mechanic. Scary. Oh, and I'm pretty sure that he wasn't BSing either. This body shop works on mostly high end stuff. There was a Porsche GT2 getting a new bumper after the owner backed into something. Ouch! I'd hate to find out how much a GT2 bumper costs.

Alpine

It's not an off the shelf product, you have to mail order it. I run high octane gas to give extra margion of error to detonation, I don't think it can improve power by it self unless you increase boost, compression or advance timing. It's actually $12 per can from http://www.jbsblownc5.net, I just thought this might be of use to some of you. It's alot easier and safer than carrying a fuel jug in your car to the track.

rynberg

Every track I go to has 100 octane unleaded and 110-114 leaded available....

Tenacious

I felt a difference in my car running, whether you believe it or not >< oh and the fact that it costs me 50bucks to fill up my 7! I think I have money to spare on trying octane boosters. My car did feel better, running wise, I'll do my own little investigation w/ octane boosters, because I know I do feel a difference in the performance of my engine(but it could all be in my head) so I'm gonna go try a couple dynos>< But thx for the info!

Larz

I work at an auto parts store. I get people in there all the time buying the miracle 25 hp adding octane boosters. I always try to persuade them to spend their money on sea foam.

Mr rx-7 tt

iTrader: (5)

http://www.content.loudeye.com/scrip...550&cid=600111

KaiFD3S

iTrader: (37)

cardzrule

If there really was a difference then it must mean that your car is knocking on the lower octane gas which means you need a tuneup asap before you blow up your engine. Ur engine is gonna die dood if you dont fix it.

cruiser

We have 100, but our octane rating is different to US rating

Trexthe3rd

This is just sad.
The only difference between higher octane gas and low is that high octane gas is less combustable (hence less chance of detonation). If your car does not have any knock, the only difference you'll feel with higher octane is less power, not more.
Glad it worked out for you in the end.

dgeesaman

iTrader: (7)

Yes, this thread was sad from the beginning. It's an old, recycled topic that never goes away but nobody ever searches for it.
Yes, higher octane is less likely to detonate or preignite. No, that's not exactly combustibility; octane is another property of the fuel. See here: http://www.repairfaq.org/filipg/AUTO...l#GASOLINE_004
No, you will not find less power, you will get the same power. However, from a tuning standpoint you can say either a) there is more margin against detonation when supply runs a little lean or b) there is room to tune a little leaner and thus gain a little more power if your engine can handle the higher temps.

Dave

FC3S Murray

iTrader: (7)

I know this is a old thread and I dont wanna be that dousche bag that posts an article about sport compact car BUT in thier July 2005 issue, they did a test of three off the shelf octane boosters; NOS Racing formula octane booster(10$) which uses Methyl manganese tricarbonyl(MMT), Pennzoil Outlaw super octane booster(4$) which uses Ferosene boosters and the last was home brew Toluene(0.23$).



They used a certified Combustion Fuel Research engine to test the boosters and added the proper amount to the gas so the ratio would be equivalent to a full 15 gallon tank filled up with California Shell 91 octane gas(the **** really is 91 octane for those who doubted it). Then end result was this:

Home brew Toluene: 91.4 AKI (R+M/2). 0.2 octane gained

Outlaw: 92.4 AKI (R+M/2). 1.2 octane gained

NOS Racing formula: 93.7 AKI (R+M/2) 2.5 octane gained


So rynberg, some of the off the shelf boosters are not totally ****. Granted the best one tested only gave them the Texas octane rating it is still a slight improvement. If only two points of octane are keeping your engine from pinging then yes, you do need a SERIOUS tune but it is good to see that we are not getting totally ripped off at these stores.


A little FYI, the magazine did another test with just the Toluene(which is available in various grades at chemical supply stores and better hardware stores) and 91 shell gas in different amounts.

With 30%, 4.5 gallons(11.25$) of Toluene added to a 15 gallon tank the octane rating went up to 95.5 AKI (r+m/2). Not bad for just .22 cents per octane point per gallon.

Downside is excessive concetrations of these additives damage emission control hardware, O2 sensors, spark plugs, injectors and cata conv.

lets hear the flaming...