Scion FR-S dyno by Insideline = 173 whp @ 7000 RPM, 143 lb-ft @ 2800 RPM
 

... But it is relavant to us as well. Without belaboring the point: 173 whp @ 7000 RPM, 143 lb-ft @ 2800 RPM.

Not bad at all considering claimed values for each!

[u2b]tMsRYPRTUSY[/u2b]

here's the video that goes along with it.

[u2b]tMsRYPRTUSY[/u2b]

Damn you're quick!

only 800 miles on the odo... seems a little sketchy to be doing dyno runs during the break-in period

Well, thats sounds more like it than the previous dyno pull.

Eh, I'm sure that cars been plenty abused during reviews, and all that already. Probably seen more in 800 miles than most cars do in 10,000.

Also it's 143tq not 141tq in the video.

That's crazy that peak TQ is that low in the RPM range. Modding is going to be interesting. :)

peak torque @ 2800 is very impressive, considering it holds it past 6500!

OK... well past 6000 anyway.

Claimed torque peak from the MFG is at 6400

For the record - that's on Dynojet.

Combined plot for the BRZ .jp website curve, COBB BRZ dyno, and Insideline FRS dyno:
http://www.ft86club.com/forums/showt...307#post180307

I will say while peak torque may be low, it's entirely disingenuous to point that out without revealing the torque dip thereafter.

Yeah, that dip between 3500 and 4500 (roughly) is going to feel like quite a pause during acceleration.

Cayman R has the same dip on the curve wonder if it's something to do with the flat engine. Here is the chart, it's on page 17: http://files.porsche.com/filestore.a...ault&version=3

Copying what I wrote in the FR-S thread:

On NASIOC, the dip was attributed to intake manifold design. Wonder if people are replacing intake manifolds on their Caymans to any effect. Likely a combination of that and what ZDan is saying, though I can't claim any verity on the intake manifold statement.

It will be easy to avoid it. You will be above or below it most of the time. In normal driving you would shift around 3000RPMS so you wouldn't reach the dip, and when you're trying to accelerate you would be shifting close to redline so you will stay above the dip.

http://i.imgur.com/HxrjW.png

I like this comment on the Insideline article:

Sounds like the torque in this engine is underrated. Nice!

that is not much of a dip in the Cayman R...but yeah, it could have something to do with the flat engine or more likely the DI\and port injected heads...

Remember that Porsche has variable cam timing as well as a second set of cam lobes that give greater lift at some higher rpm transistion point. So they could tune the base cam lobes for a smoother torque curve at lower rpm.

Two things... I'm sure they dyno'd the engine during development - why didn't they fix the dip in the torque curve?

Also, this looks great, and it's nice to know the BRZ will have about +5 on both of those curves, just due to the Subaru badges and more realistic looking fender vent. ;)

If the dip is due to the manifold tuning, then it would make sense. Intake manifolds are designed to resonate like a musical instrument. The goal is, at the target RPM, the air vibrating back and forth in the runners is timed perfectly to force more air into the engine. If the FA20's intake manifold is designed that way, then it's conceivable that at half the frequency the resonance would be on the back swing, which would hinder air from entering the engine.

Granted, this is with just an armchair engineer's understanding of vibrational frequencies in a moving fluid. But the theory makes sense.

Haha :bellyroll:

Don't forget the color of the car has a direct impact on horsepower as well.

Damn that Cayman R has a shitty torque band below 5k. I thought it was going to be nice and flat.

It's not as bad as it looks, the torque scale starts at 147, not 0.
Worth noting, where the curve starts at 1500rpm, the Cayman is making ~25% more than FR-S/BRZ *PEAK* torque.

I want a Cayman R, in that snot green color...

I wonder what would a turbo do for this motor. It would it get over 250hp?

Also keep in mind that Cayman R's chart is based on fly wheel not at the wheels.

25% more torque for 160% more dollars

25% more torque *at 1500rpm* than the FR-S/BRZ make *at peak*.
Cayman R *peak* torque is 273 lb-ft, 80% more peak torque.

Anyway, just pointing out that the Cayman R's torque band isn't that bad, not trying to make any argument that the Cayman is a better value/$$$ or anything...

Hah yeah I wasn't trying to argue that, just pointing out that the Cayman R is exorbitantly expensive :happy0180:

It's definitely on my list of cars I wish I could afford.

Only if it's WRB.
Fuck yes.
Yep.

Fixing it would cost money :(
It's okay, aftermarket will figure out new intakes and stuff.

As I said somewhere else, the dip's due to cost involved in fixing the design constraints/limitations. Engineering a solution was probably too expensive. I wait in anticipation of aftermarket solutions.

Going back to my missing torque conspiracy, this is the fixed version.

Pretty confident they stacked up their acoustics in two places to keep it less high strung than piling it all in the ~5000+ rpm range and giving me my damned 170+ lb-ft. :mad0260:

It needs some around town torque. If they sacrificed some top end for it, I'm okay. The problem is the dip. I'd be fine with 143wtq if there wasn't a dip. 170wtq would be awesome, but that high in the rev range it's going to be approaching pointless on the street.

Which is why the 'dip' is the fixed version, if you look at it as two 'normal' (well a normal low rpm peak and a super-flat high one) peaks, rather than a dip.

Low peak is the around-town driving torque curve. Given low rpm operation you will feel a build up and taper down of torque probably encouraging economical short shifting while still feeling responsive.

The super flat high peak (range?) is for performance driving. Looking at the gearing and where the 'dip' is, it doesn't become an issue at close to redline shifting, the rpm don't drop into a hole.

So the only real place it will be noticeable is not properly downshifting to pass, and maybe on hard launches. Once out of first gear in performance driving it shouldn't be a big issue at all...

Oh yea the aftermarket will solve what MILLIONS of Toyobaru $$ and engineering expertise out the wazoo couldn't solve... yup

And you guys really think you're gonna feel that slight dip in torque? really? come on...

I was agreeing with you Dimman, regarding what the dip constitutes. I was disagreeing that 170wtq up top would be better than 143wtq down-low and up-top but not in the middle.

Gotcha.

To be fair, those high paid engineers have to make a lot of compromises. They had to make an engine that worked for those of us who want to play in the upper band, as well as working for those that will likely do nothing more strenuous than a highway on-ramp.

An aftermarket company has a much more focused customer base, so they won't have to make the same compromises. An aftermarket company could choose to sacrifice around-town ability for improved top-end torque.