2015 stock dynos?
 

I have a 2015 and I don't think I feel a torque dip. Would a toyota re tune the ECU on this engine? I haven't seen a single 2015 dyno yet. Wondering if engine adjustments were made that didn't directly affect the torque or HP totals. Plus, there are so many 2014s new and sitting on lots, that publicizing that the 2015 engine is better would prevent people from buying last year's stock, a ton of which still needs to get sold.

Have you driven an earlier car and feel a difference?

If not then I would hazard a guess that nothing has changed and the internet has blown it all out proportion for you, it really isn't as bad as people make it out to be.

I have a 2013 and personally didn't really notice until I started reading on here more. I always attributed the "dip" to just low power at a low RPM.

I have a 2015 AT and if you floor it from a dead stop at idle there is nothing until you hit about 3,000 rpm. It's so sluggish it won't even spin the tires.

Even still, it'd be cool to see a dyno comparison of a 2013 all stock to a 2015. I am assuming the few years must have allowed for possible adjustments to things that didn't affect the 151 torque and 200 hp numbers.

Or we just pull the tune from each and compare. I highly doubt there is any difference.

See that's the trick, it's probably mostly in your head. Especially when you consider that this engine has great torque available at low rpm (<3,200 rpm), it's a lack of torque between about 3,200 and 4,500 rpm, coming from lets say idling in first gear and then putting your foot to the floor you should feel a strong pull, a softening of the pull, then maximum pull from 5k to redline.

A change of 20 ft-lbs of torque in a specific rpm range of the engine isn't noticeable by most drivers, I know I wouldn't have guessed it, I just would have said that the engine is kind of meh under 5k rpm but cruises quite capably 2k-3k, actually I do say that.

http://www.tune86.com/sites/default/...n-frs-dyno.jpg

Thats the nature of the automatic and gearing.

Torque dip doesn't even happen til about 3k rpm.

I have come to the conclusion that the "torque dip" in the stock car can be overcome by driving technique. If you do it right - you won't notice - it only exists for a second or less. Think of it as building boost if it helps. You can also "hiss" like a BOV to help your journey through this one second period.