2006 and up power drop?

I was just wondering if anyone would know why Toyota dropped the power from the 2005 model of 245hp @ 5200 rpm and 282tq @3800 rpm to the current (06 and up) 236hp @5200 and 266tq @ 4000rpm?

From what I was reading at msn.com, the 05 model was getting better gas mileage compared to the 09's but then again it's probably because the fuel mileage was revised around 2008.

 

hmmmm interesting... I havennt heard anything about this.

 

I wonder what changed. The compression remained the same so I was thinking it could have been something for emissions that changed. I know companies do that all the time, for example GM's LS1 changed their cam and intake for emissions/mpg purposes. A parts breakdown of the 2005 would probably enlighten us all.

 

I remember reading that It was something with the emissions when they tested the 1GR-FE. I don't remember exactly though.

 

Hmmm, weird. Didn't know about that, guess i'm glad I have a few extra squirrels in there.

 

could it have to do with the 91 octane fuel requirement in 2005?

 

Good point.

 

I don't really notice a difference in the 91 or 87.. maybe a few more miles on the 87

 

I don't think putting 91 octane on our tacos now will gain us the hp and tq of the 05's. I wonder if the intake was changed somehow or the heads.

 

nothing has changed in performance... its just the testing was done different for emissions

 

It changed because the rating and testing methods for horsepower and torque were changed to make them more standardized. The power didn't change, but the measuring method did.

 

The SAE testing changed. Pre-2007, they had a lot more leniency to change numbers. Similar reason why EPA ratings went down.

 

That's what I was thinking of. The SAE testing changing. Thanks.

 

Basically every passenger vehicle on earth went down. Japanese manufacturers, on average, went down in HP more than domestics with the new SAE standards. If I remember correctly, the Corvette lost 3hp while, as you can see, the Tacoma lost 9.

 

Huh...weird, although far fetched, the 05's had motor mount problems...I know they stiffened the mounts but they could have dropped the torque to reduce the possibility? Doubtful but could've, I remember the power drops on everything though, my friend's dad had an 01 MDX at the time and then an 04 and he was telling me how they dumped the power on the 05's or so only to up it again for the 06's and boost it way up for the 07's or 08's(?) - the newest body style. Funny how Expeditions never had any power changes, just up from the 04 which had 280HP and 290ishTQ to the 05's and their 300HP and 365TQ.
I do remember that time though. Good thing they all came back up (for the most part) afterwards.

Most likely emissions, sucks though. Torque rules all.
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It's the new(ish) SAE standards for HP and TQ that they came out with a couple years back. They test them differently than they did previously and the numbers came down to what they should've been all along.

Here's a good post I found a while back that explains it: http://forums.beyond.ca/showthread.php?s=&threadid=98194&highlight=SAE+horsepower

 

Alright...show me up by a lot...see if I care! jp
Well, nobody lost HP's or TQies at all then, you'll just be neck in neck when you say you rule new Taco's with a stock 05 cause yours came with more power and they have a CAI and beat you. lol epic fail haha!