I've discussed my experiences in the past with the Torco concentrate, and found several of you have had good results with it. So I contacted Torco and ordered another 6 quarts. I tried 1 quart per 10 gallons (2 quarts in 3/4 of a tank) which should make my 91 octane actually be 99 octane according to their website. I put my 100 octane tune in the truck (20 psi and 20 degrees of timing). I know this works great with 100 octane unleaded. I shut the alcohol injection off and went for a drive. As soon as I floored it the truck detonated badly. I immediately stopped and pulled over to switch to my alcohol 91 octane tune. This tune is still 20 psi but only 16 degrees of timing, ramped up from 12 or so down low. This is my daily driver tune and works awesome. I still had the alky turned off and tried it again. I was still getting detonation, but not as bad as the race tune. Turned the alky back on and everything is perfect again. Temps were low 80's, A/F is 11.6:1 at WOT.

I had spoken with the Torco chemist and he told me this unleaded version is worth 3 points max of octane, whereas the leaded version is worth 8 at a rate of one quart per 10 gallons of pump gas. On my truck and in my experience I believe 2-3 points is all I'm getting, but that's a guess. What is a fact is that it is not 8 points as they state or even close to it. And what is also a fact is that the alky injection allows more timing than their race concentrate does. Plus the alky only costs $3 per tank of gas or so, versus nearly $20-$35 per tank of the Torco, depending on if you buy cases or 5 gallon cans.

My opinion is it will allow you to run a bit more timing or take the edge off a aggressive tune, but it cannot compare performance-wise or price-wise to a good alcohol injection setup.

Jody

 

forget it...

 

Sunoco sells 100 oct unleaded for $4.50- $5.00 most everywhere, why not just buy that, and avoid the mixing. Even at a 1-1 mix with 92 you'd be at 96 oct. and thats probably less than $3.00 more per gallon for pump gas.

 

When you are talking about points are you saying a point is
.1 or 1.0

Industry standard considers a point .1 octane

So you add it and your Octane goes from 90 octane to 90.1

 

Torco Mach series Accelerator concetrate is about 22 bucks a 32 oz.can.
It will raise 20 gallons of 93 to 97oct. and 5 gallons of 93 to 107oct.
Its great stuff. My Silver truck lived off of it!
Just wish I could get C-16 as cheap!!

Scott

 

Scott,

Make sure you add that you are using the leaded version. I am speaking of the unleaded stuff, of which they make the same boost claims.

Jody

 

Jody, yes I do use the leaded.

 

Thanks Scott. How long do your cats and O2's last?

Jody

 

No cats or 02's in Red. Silver has no cats and only 2 upstream 02's and have only replaced twice in the last 2 years.

Scott

 

Thanks! I'm sticking to alky for now; good to know the leaded stuff works, but I am going to call them about the unleaded (again!).

Jody