Premium gas

Christ I don't stick with one gas station , come on your talking to a gas buddy member here . I'm always chasing after the cheapest premium.

 

I had no f's given when fuel prices went through the roof last year, didn't care to keep track of prices didn't matter. Obviously we see now I've started tracking my fuel prices again. This will be fun . I fill up 3 times a week sometimes 4. Why don't I drive something else ? Cause I can afford to drive my Tacoma for a dd. Where I'm working now is 180 mile round trip a day . I love driving , especially my Tacoma every day .

 

I wasn’t paying attention one time and I accidentally filled up with non ethanol premium when I was close to empty. Performance wise maybe a slight difference in response but my gas mileage increased a good amount. I don’t think it was the premium that did it I’m pretty sure it was because there was no ethanol in the gas.

 

You don’t have any Fuelly friends yet! I added you so now you’re stuck!
Your log book looks similar to mine when I was doing a 160 mile commute daily. Albeit I had a Focus hatchback pumping out 38mpg.

 

VVTI can't adjust the lift only the timing. It changes when the valves open/close; not how much. It's how toyota adds Atkinson cycle to our engines.

Toyota did have a system that had two cam lobes to vary lift, like vtec, but it's not on our trucks.

 

True VVT changes timing only.

That timing change varies where the piston is at when the valve closes. Thus it really is about varying the effective compression ratio on the fly.

Also ECU will vary injection timings to manage peak cylinder pressure, burn profile/temp (emissions), …

Overall yes there is wiggle room for the engine to modify performance based on the fuel used. However without knowing details about the controls logic, I doubt it will be a noticeable variation under most operating conditions before bumping into coded limits.

 

VVT does not change where the piston is, that is fixed ( with exception to speed, based on RPM ). VVT changes the valve timing in relation to the piston travel.

 

Yeah, to spend more.

 

Right, Variable Valve Timing acts on the valves. Point being, if you draw a picture of the cylinder when the valve closes you would see the piston at different positions.

Trying to convey how VVT allows dynamic compression ratio. So an engine can be designed with a high geometric CR that can only be used under certain conditions, and VVT can pull it down, typically with some thermal efficiency hit.

 

https://youtu.be/WKKILW3Zj_Y

 

It doesn’t matter to some people how much they spend if it makes more power as shown on dyno tests.

 

If they needed to do that, they likely bought the wrong vehicle, or it has a problem.

 

What about people who live at high altitude? Or those running with more weight than stock? Or bigger tires? The $/hp ratio for tuning a 3.5 is roughly in line with most other performance mods for most other cars. A few hundred dollars for ~20hp+ (and better shift points and better mpg) is worth it for some people, as evidenced by how many people do it.

If it doesn’t make sense for you, that’s totally fine, but why disrespect others? It just makes this a toxic community.

 

I’ve got 33s and about 650 pounds of extra weight. Running premium SFOB on 94 E0 octane, definitely comes in handy.

That said, I always ran 91 E0 on stock tune, truck drove great.

 

Yeah I seen you added me . Your the first one to .

 

Damn well said

 

Yeah I'm rolling 5400 lbs nothing in the bed on 315/75/16s and stock gears baby oh yeah . 6th gear and checked rpms yesterday, ehhh around 1390 rpms at 60mph. I'm at or very close to or at sea level on my commute everyday , it's the Puget sound .

 

That just proves what I'm trying to comment on...they could have bought a different vehicle with more power if needed. I get what you you mean, i'm not trying to disrespect others, but I'm just not one of those that needs to alter a 40k+ truck after finding out it makes less power than hoped for. Imo, these 3.5's have plenty enough, and shift just spot on fine...its why I question what's there to correct?