engine output

There must be some slight differences in the two engines.

From Toyota.com

'10 FJ

4.0-liter DOHC 24-valve V6 with dual VVT-i; 260 hp @ 5600 rpm; 271 lb.-ft. @ 4400 rpm


'10 4R

4.0-liter DOHC 24-valve EFI dual independent VVT-i V6 270 hp @ 5600 rpm/278 lb.-ft. @ 4400 rpm

Probably differences in the exhaust system, it was the case on the 3.4 V6. The third gen 4Runner 3.4 V6 was rated at 183hp vs. 190hp in the first gen Tacoma.
 
First an opinion: I don't know why the US needs 3 grades of gas. It seems to me everything should be premium period and pay Regular price for it because it doesn't cost any more really to make the octane go up from those extra additives the gas companies put in it. Of course, this is not real world when it costs 0.00001 cents to make it 93 octane and can charge 30 cents more per gallon.

Anyway...too bad TRD isn't making a supercharger for our engines. I was definitely considering one. Even though it requires premium, they have some literature that gas mileage increases (except at full throttle) because the engine doesn't have to work as hard due to the extra power.

I'm hoping for at least a CAI and a new cat-back exhaust with Y-pipe. I'm sure some of you have seen but the exhaust is so stupid. It is the lowest point on the car where it goes under the transfer case and the pipe even squishes to an oval. Non-mandrel bent FTL! :cry:
 
Just to be absolutely clear, the octane is not what makes more power. I just want to make sure people don't get the wrong idea. With modern engines (better sensors, control system, etc), the engine will start to advance the spark timing until it starts to see knock then backs off to find the best operating point. The difference in power comes from altering the tune for the octane, its not inherent the fuel itself. For example, if you put higher octane in you lawn mower it does not automatically adjust to make more power.

Octane rating is simply the rating given to show the resistance to knock. I run premium fuel when I am towing because low speed with high load is the case where knock is most prevalent. Other times, I rarely run premium. Its much more important to use a quality fuel not from walmart and others than it is to use premium.
Top Tier Gasoline

:iagree:That's why it seems to take burning almost a full tank before my 4runner acceleration improves.Sucks paying for premium but it does seem to help a little bit.:(
 
:Sucks paying for premium but it does seem to help a little bit.:(

I agree. When i first got mine i ran regular gas. one day i was going somewhere with my dad and I stopped for gas and he offered to buy it. He put premium in it (that's what he's used to pumping) and I noticed a difference in performance. I've been running it ever since. and to the best of my knowledge my dad isn't a secret agent working for the gas company going around luring people into buying more expensive gas, though he would be good at it.
 
I hate to bring this thread up again and it may seem like I'm beating a dead horse, but I just came across something the other day and was wondering if anyone else has noticed it or can explain it.

I had to renew the registration on my 4R the other day and was going through some documents and took a look at the title. The title lists the horsepower at 236, anyone know why that would be? IIRC, that output was the 4th gen V6. Shouldn't the title list 270?

Is it like that on anyone else's?
 
For you 5th Gen owners I would use Premium fuel. Love my 4th Gen. Have used premium since new. 2005 V8,

After having towed boats up to 10k pounds or more with a Suburban, then an Expedition, then a Titan...and now a flats boat (about 2,800 lbs.) with my T4R I can say regular fuel works just fine. I've never put Premium in any of them. No knocks, no performance problems. And my fuel mileage has been as good or better than the EPA rating for normal driving.

I really see no benefit in spending the extra money on Premium gas. I towed the flats boat today...no worries.

Save money...Buy regular gas. You're not helping your engine with Premium.

The one thing we should all do is write our congressmen asking them to advocate an end to mixing ethanol with our fuels. It is a terrible waste of farm production that could otherwise be used for food. Not to mention it reduces our gas mileage.
 
So you run higher octane all the time? I believe I was told by the dealer NOT to do that...use the octane recommended in the owners guide. BTW: 2008 SR5 V8.

I have learned to automatically ignore everything the dealer has told me, just smile and nod. I only do what the manual tells me.
 
The one thing we should all do is write our congressmen asking them to advocate an end to mixing ethanol with our fuels. It is a terrible waste of farm production that could otherwise be used for food. Not to mention it reduces our gas mileage.

Oh god yes. Ethanol can die in a f***ing fire. I makes my small carb'd engines in mowers and weedeaters run like crap too.
 
The one thing we should all do is write our congressmen asking them to advocate an end to mixing ethanol with our fuels. It is a terrible waste of farm production that could otherwise be used for food. Not to mention it reduces our gas mileage.

Oh god yes. Ethanol can die in a f***ing fire. I makes my small carb'd engines in mowers and weedeaters run like crap too.
Archers Daniel Midland (or Cargill) contributes more money to more congressional Reps in more states than you can imagine. We have ethanol requirements because they wanted to sell ethanol and biodiesel and they promoted it as a "clean fuel". Between ADM, Cargill, and an idealistic desire on the political left to save the world from human beings, there is zero chance that we will back away from ethanol.
 
Archers Daniel Midland (or Cargill) contributes more money to more congressional Reps in more states than you can imagine. We have ethanol requirements because they wanted to sell ethanol and biodiesel and they promoted it as a "clean fuel". Between ADM, Cargill, and an idealistic desire on the political left to save the world from human beings, there is zero chance that we will back away from ethanol.

That's really a shame. I'll look up the stats later. But, it takes a HUGE amount of corn or other fuel stock, and an incredible amount of water and other resources to make just one gallon of ethanol. It's the biggest waste of money and resources in our nation's energy policy.

We should encourage domestic development of oil production (we have a staggering amount available), which can be done in an environmentally responsible way and also work on engine efficiency at the same time. Diesel technologies are really promising. Think about it...a Ford F250 diesel 4x4 can get over 20mph on the highway.

Imagine what a great diesel engine could do for the T4R! My Dad drives a new BMW x5 diesel. He gets around 25 or better on the highway. And he has a lead foot.
 

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