most cases-tuned for, but i didnt know if nelson advances the timing enough to run 104. Higher octane only means more power if your timing is right. I was just wondering if anyone know the specs of his tune. Ive tried to call him, but hes never there.

Derek

 

i ran about 4gallons of 115 leaded race fuel mixed with 93 before and didnt have any issues. i used it when spraying since that was all that was availble to me at the time of need. i had cats, stock manifolds, 93 hypertech tune and it didnt mess up either of my cats or 02s. granted if you run it for a long time yes it will


also for the person said about the lead, do some searching before you reply to something that youre not aware of or dont have the knowledge of,cause it only makes you look like a fool and youre creditiblity will be down. knowing you give out false info

 

Even if you aren't "tuned" for the higher octane, it doesn't mean you can't / won't benefit from it. In my case, w/ the 2000 PCM (known for KR issues) and the Hypertech 93 tune (referred to as "HyperPing" by some), 5 gallons of 100 octane in a near empty tank before leaving for the track, that way it's sure to be in the fuel lines after a 25-30 mile trip (plus I'm real low on fuel then for weight ) is like cheap insurance, especially with a 100 Dry shot.

 

This coming from the person who had this to say;
https://www.performancetrucks.net/fo...09&postcount=8
https://www.performancetrucks.net/fo...7&postcount=36
https://www.performancetrucks.net/fo...d.php?t=364253

 

As expensive as it is to replace a PAIR of catalytic converters and a PAIR of oxygen sensors, why would anyone knowingly say it's okay to run leaded fuel a little bit, but not for a long time? Do you think there is point at which no dmage has been done and then all of a sudden it's too late? Do you realize what the consequences are of running inaccurate O2 sensors, especially with gas approaching $4 a gallon?

The type of mentality that "this is okay" comes from the same people that will say it's okay to go 140mph on the stock tires and driveshaft just because they know of someone who knows someone that's done it without a problem. Think about it.

 

OWNED!!!
"Back to the original statement that Octane does not have to be tuned for....
Since all octane does is resist detonation, there is simply no point to put higher octane fuel into an engine that doesn't ping on lower octane. If you're going to spend the extra money on a fuel with superior detonation resistance, add timing or add boost! Use it! That is what you are paying for!"

about that i was just saying you dfont HAVE to have a tune to run the higher octane, you wont benefit but you can do it.

 

but i was just wondering if nelsons tune is to where i WILL benefit from the 104. I know you can run any higher octane in a vehicle, but in some it will just lug along and suck on power. What i meant when i said tuned for is that to reap the benefits of racing fuel, does there need to be a higher degree of timing.

Derek

 

you can tune and get advanced timing which will give you more power/ you will need octance for you fast advance but you wont need advance to run octance, you would have to be sure that you always run the high octance if you get tuned for it or you'll have bad detonation.

 

have you ran leaded gas? do you know anyone who does? well in this situation i have and known ppl. its plenty common to do it. alot of turbo regal owners do it to help with KR on their rides.

a pair of 02s 100 bucks, thats not a lot of money considering what other things cost. and no i didnt say run it all the time i said it could be ran once in awhile. run leaded and pull the 02s and youll see not much if anything is on there when mixed with regular unleaded. its when you run tank after tank of straight leaded. also if you think youre 02s are messing up you can run it on a scan tool and monitor the 02 readings through the range. o this would mean you would need access to one which i do and some probably also do. and why would you want to go 140mph in a truck? unless its in the 1320 then your actually setup for it and if youre not then why are you doing it anyway and chances are youre not properly setup for it. and dont give m this mentaility ****. and you would also know that the damage to the 02s is build up on them. lead is a deposit that clinges to things. to much deposits of lead on the sensor is what kills the 02. same thing with the cats it cloggs them up and help speed up the process of melting down the ceramic or etc inside them


and thanks buddy for the posts of the magnacrap muffler testing. and as you can see i asked for proof and which is shown

 

I understand ya! You're asking if your tune have the advance vaiables in it to reap the rewards of using a higher octane. (something like that) Good question I have also wondered? Obviously there is variation in gas quality even of the same octane?