2026 4Runner TRD Sport Dyno Results (Stock vs Tuned on 86 Octane)

[sstarrx2]

This is basically as nuts as the other reply. 15-20 more hp is going to roll over the 4runner.

This site is super weird.

It my experience folks that tune their vehicles drive em like they stole em...so yeah they are dangerous.

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[HVLA]

It my experience folks that tune their vehicles drive em like they stole em...so yeah they are dangerous.

Using premium gas is tuning? What?

I am beginning to wonder if this forum is filled with octagenarians or something. Maybe this is the wrong forum for me to spend time on.

 

[sstarrx2]

Using premium gas is tuning? What?

I am beginning to wonder if this forum is filled with octagenarians or something. Maybe this is the wrong forum for me to spend time on.

This thread was ultimately about tuning. The gas mileage tangent just creeped in. You should be so lucky to have octagenarians on this theead, they could teach you some things and save you from yourself.

 

[HVLA]

This thread was ultimately about tuning. The gas mileage tangent just creeped in. You should be so lucky to have octagenarians on this theead, they could teach you some things and save you from yourself.

I have been modifying turbo cars, trucks, and suvs for over 2 decades thanks.

 

[sstarrx2]

I have been modifying turbo cars, trucks, and suvs for over 2 decades thanks.

Ok truce....was not implying they could teach you about vehicles, but more important things. No this siteis not dedicated to moders and tunners but plenty folks on here do those things. Two decades is a blink of any eye.

 

[xp0nex]

It my experience folks that tune their vehicles drive em like they stole em...so yeah they are dangerous.

No way... I tuned my 3rd gen Tacoma to improve drivability, and it was a vast improvement over stock. It helped with throttle response as well was reduced gear hunting which the 3rd gen Tacoma was notorious for.

 

[TrdProGirl84]

I'm not saying anybody should run 93 octane in their 4Runner. It was merely a suggestion to anyone who doubts the performance difference between low and high octane fuel in a modern turbocharged engine.

I run premium in mine with no tune. To each his/her own.

 

[FoRunna]

Boy I sure missed the fun on this thread.

Essentially, yes, Camtuning is 100% correct regarding all comments about fuel octane. Also about the lean conditions during peak torque. It's weird how Toyota is targeting such a high AFR in these areas. I can't even predict why they would do this.

The takeaway from tuning is this;

As someone with a tuned 4Runner (has been for MONTHS now) it's 100% worth it. Not only is it optimizing performance (especially with aftermarket components), it's also increasing power a good bit and in a perfectly safe way for the T24 engine.



As far as fuel octane goes;

Toyota rates it for a minimum 87 octane fuel. You should not expect to see peak powertrain performance on lower fuel octane. It will be pinging, the ECU will be pulling timing, and you willbe losing peak efficiency and power. 91-93 octane is where these engines perform best (both untuned AND tuned). In fact, if you're carrying a lot of load, towing, etc you should ONLY be using 91/93 octane fuel.

 

[Joestac]

Boy I sure missed the fun on this thread.

Yes, sadly, this place is turning into Reddit which was one reason I came here instead in the beginning.

As far as fuel octane goes;

Toyota rates it for a minimum 87 octane fuel. You should not expect to see peak powertrain performance on lower fuel octane. It will be pinging, the ECU will be pulling timing, and you willbe losing peak efficiency and power. 91-93 octane is where these engines perform best (both untuned AND tuned). In fact, if you're carrying a lot of load, towing, etc you should ONLY be using 91/93 octane fuel.

This was a reason why I've run premium on all the turbo vehicles I've owned since my 2013 Chevy Cruze, 2015 Ford Edge, 2022 WRX, and 2024 Outback Wilderness. They just seem to drive better with the higher octane gas, it isn't even about HP for me.

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