93 octane impressions

Oh buddy do i have some info for you. Prior to swapping to a full DI replacement setup, i ran methanol for quite a while. One moment.

 

Yep

 

I had the torqbyte version of this...fully tunable based off RPM and boost, rather than the standalone boost controller units. I preferred that setup simply because I didnt want the system coming on prior to being at a certain RPM and load range. Big turbo....took a while to spool.

Snow Performance Stg 4 Boost Cooler Platinum Water Injection Kit

Personal recommendation, which is contrary to the other controllers; I ran the pump at 100% duty cycle all the time (most pumps have an internal bypass which works fine...just replace the head every so often), and PWM the fast acting valve (aquamist valve).

 

Also, Scott at USRT has some trick items too.

REAL world tuning

 

Also...and i'm done hijacking this thread....

IF you dont have access to a solid methanol source, this is a great substitute.

Sunnyside 834G5 Clean Burning Fuel Denatured Alcohol 5 gal - Walmart.com

I'm drawing a blank at the mix ratio, but it was a higher water content than alcohol.

Most people just run straight methanol or Denatured alcohol...without realizing that the water is the actual knock suppressant. Water is incompressible, and will not detonate. Its octane rating is infinity. SO personally, id recommend a higher water concentration than methanol to provide knock suppression, steam cleaning/steam engine effect and then the methanol will provide supplemental fueling support, and bring combustion temps down even more.

 

Altitude affects the performance of octane ratings. Here in Utah, around 4200ft, we have 85 at our pumps. I'm told 85 here is similar to 87 at sea level. I always run 87/88 in the Tundra (in my three-month long ownership). I'll be towing as high as 8000 this summer.

 

Depending on the store, around here it's anywhere from $0.60 to $1.24/gal. In many different vehicles, I've seen a slight improvement in mpg. But it's never justified the higher price. Same with e85 for my 2014 Tundra. It was only $0.25/gal less, but per mile, the regular gas was more economical.

 

Throttle seems to respond like it should. I get a slight rough idle at stop lights on 87. That seemed to go away. Time will tell I guess.

 

What are your thoughts on running a few tanks of premium to help with carbon build up? Seems that the big 3 gasoline makers (Exxon, Chevron, Shell) advertise the cleaning aspects of premium. Retailers like Valero, Marathon, Walmart, Costco, or other grocery chains don't seem to have the same cleaning properties as these 3.

 

top tier fuel and also station maintenance is very important before you get to octane.

shitty stations with not the correct maintenance are to be avoided. slow pumps are indication of vapor leaks or clogged filters

gasoline is very dirty with a lot of sediment in it, we remove UST systems all the time, you have to shovel out 55 gallon drums worth of shit in every tank. Here is one I was on years ago, just a little guy though, 6-8K

 

I ran 87 on mine for the first 35k miles. Had to make a 1,300 mile round-trip and decided to run 91 on the trip for that exact reason. That was 5k miles ago and I haven't gone back to 87.

It made no difference in MPG but the truck responds much better.

 

:-o IT'S A VOLVO!!!11

 

lol, yup

they make some awesome excavators

 

I’ve owned a nonhybrid and hybrid. Engine response is much better on premium on both. If you’re adding performance mods, it’s a must if you care about maximizing your engine response.

 

Same, I've driven mine with 87 and 93, agree MPG is really no different, but response is better and it definitely sounds and idles smoother with 93. I try to only put Shell VPower in mine, but will do Exxon if not available. Not a lot of Chevron left in TN