You don't list any mods for your car, or why you were tuning it, but I'd be more concerned about why you were getting so much "predetination" and "clattering bad".

The article you copied pertains to fairly exotic engines, with boost up to 73psi..... hardly any of that technology is applicable to a "street" LT1. From my experience with NA applications, unless you've gone absolutely nuts on CR, you should be fine with 94-octane fuel. My own experience tuning a 10.8:1 stroker showed that there was absolutley no additional power available from moving above 94-octane. Well... not until we baselined it with VP fules C16 so we could tune for the 300-shot.... but that was an issue related to fuel specific gravity and BTU/#, not "octane".

Maybe you are running 12:1 CR or 15# boost.... hard to tell, since you have no real info in your signature that would allow anyone to compare your experience with xylene to their specific mods. Might want to expand on your application.

 

well im not running 12.5 to 1 CR or 15# boost but the reason i run the tolulene was be cause i have alot of fasle knock. but i fixed that with tuning actually. but hey i get the stuff for free. but i know this i get a whole lot better gas mileage. and its alot better than the walmart octane booster.

well ask for any info i had on it and posted it i never said you can do all this to you lt1 or anyhting. he just asked for some info on the use of octane booster and putting tolulene in as a additive, sence i mentioned. i never said you drop a sec. off the 1/4.

 

and the reason i hads bad clattering was because i loaded a tune for another car in to mine by mistake, that i had been working on. that had ported heads and lts so it had alittle more timing that i can use. and when i got to where i was going we started doing a little racing and i heard it clattering i then i dawned on me what i had done. so i have two gallons xylene in the truck foir a guy who didnt show so i poured it in. and solved all the clattering.

the reason i couldnt fix with tunning is because i forgot the cable at home. but i made it trhought the night.

 

Now you've got me totally confused.... how do you fix "false knock" with higher octane or with tuning? False knock is generally related to some mechanical noise other than the combustion process?????

 

well when i first got tuner cat. i was messing arround with timing and advanced it to high and the knock sensor was picking up predetnation but i changed alot of stuff on that tune and just advance the timing to far, i was told you could advance the timming a little and i did but (my litle bit and there little bit is not the same.) ( my mistake for sure ). but i tried tolulene and fixed it (no i stopped not fixed it.) but when i learned what i had done i fix with tunning.

but your right my mistake i should have not said false knock.

 

I tried a gallon of the tulolene today from Sherwin-Williams. I was a little scared to pour that in there. I asked them about the use of it w/ gasoline, and they said they had had people come in there and get it for the use of boosting octane. I had about 3/4 tank so I put 1 gallon in.

It seemed the car smoothed out a lot on the higher RPMs. More of a purr. I kicked it couple of times, and my Scanmaster showed
NO KNOCK. 0.0 And usually I get about 1-3 degrees. I did a
863 w/ 0.0 retard at 99 mph. I was happy I checked my right and left injectors, the LBL and RBL and all was great. I drove for about 30 minutes after the adding, and I had no problems, but I am sure some improvement. No codes, ect.

Did anyone else try tulolene this weekend?

 

Well, did anyone else try it?

There is a lot of info out there on this stuff...

 

glad it worked for you.

if you have any other info on it. post links please

 

I think the problem some of us have is being in parts of the country where the best gas you can buy is 91 octane. I need more octane.

 

Well, around the country octane is different. Do you really think that when you pump in 93, you are actually getting 93? I doubt it.
Have a sample of it checked. I guarentee it is around 90 or so.

My car has had nothing but improvement since I put that in there, and it really cleared up my knock on the scanmaster. A wide open run, w/ my mods, usually shows some degree of knock, from 1-3 degrees at least.

I want to try 2 gallons. I think that would be the best. One gallon makes it around 94-96 octane. That is w/ maybe 3/4 tank.

 

Tolulene...it works like a charm.