The 6MT has 8 less HP. How did they accomplish this?

The 6MT has 8 less HP. How did they accomplish this? Did they do it with a tune or manifolds or cams? Different turbo? What exactly is different?

Not that I care about the 8 Hp that much, but perhaps swapping parts around could have some potential gains.

I'd like to see dyno results for all 3 drive modes as well or at least know what the specs are.

 

I heard it was a redline difference.

 

There is the redline difference.

And then the peak torque for the auto comes on at 1700 rpms and the manual is at 2800 or something.

1100 rpm difference is huge and I cant imagine this is just done through a timing curve or air fuel ratios.

 

As far as I’m aware it’s all tuning. Same with the detuned SR AT that are much more detuned than the manuals.

 

I'm sure it's simply in the Tune, it would be too expensive to use different parts.

 

I believe it was downturned for clutch longevity. I recall a Toyota engineer mentioning something like that. The auto trans is rated for more power than the stick.

 

Torque hits later as well. I think it peaks at 2800 RPM or so vs. the AT's 1700 RPM.

 

Is there a website where you can look up part numbers for different models?

Where you don't need a vin# to get info to be able to see what parts match and which ones don't.

Too bad Partzilla doesn't sell Toyota parts.

 

SR5 has the same power as the Offroads and Sports. SR is the only de-tuned version sans manual.

 

Oopsie. Don’t pay a lot of attention to the AT related details. Thought I had seen SR/SR5 were both detuned at one point.

 

I actually freaked a little and went and double checked. Mine felt awful powerful for being a detuned version. Luckily it wasn't

 

Toyota engineers are on record saying that it’s a high rpm vibration issue that they didn’t have the budget to engineer out on the carryover manual.

It’s not an entirely unheard of thing. I can think of a few cars with different redlines for the auto/manual. N54-powered BMWs come to mind.

 

After driving one of the full power models, I wonder how the SR (auto) would feel. Wonder if it feels artificially limited, kinda like how I think the 3rd gen feels. I haven’t driven any 4th gen but would be interesting to do some seat of the pants comparisons.

 

The SR5 is the same motor spec as the TRDs. The SR is less hp and torque.
EDIT: Someone beat me to it lol

 

A full 8 horses?
Or could it possibly be 4 Clydesdales?

 

The metric standard is the averaged output of 10 Boer goats that are 15 months of age, weigh exactly 100kg, and have received a 100 mg injection of methyltestosterone exactly one hour before measurement.

8.42 HP equals 10 ragebogers (SI: Bag), or 1 daBag.

 

OK, now That makes sense to me

 

Curious to see what the HP would be at the rear wheel. Automatics have more friction than manuals, so 8 HP less at the flywheel might be negligible at the rear wheels.

 

That Engineer Sheldon said it was simply some kind of crankshaft vibration that caused them to back slightly off on the power.

 

Anybody know how to cross reference part numbers for the different models to see if different parts are used to accomplish the higher outputs vs the lower ones for verification if it just tuning or not?