runboyrun

Dyno tested: 2015 Subaru WRX vs. 2015 Subaru WRX STI - Road & Track

Pretty interesting to see how different the powerbands are between the FA and EJ. Looks like the WRX needs a good tune? Its a torque monster and then falls flat up high. Might be the turbo running out of steam?

Thoughts? Opinions? Insight?

Lowend

iTrader: (5)

Surprised that the 2.0 liter is making more torque down low than the 2.5 sti motor.

This article could be titled: Direct Injection > than conventional EFI

Javirex23

iTrader: (17)

I'd like to see the Wrx on E85 and other mods like tbe+intake to see what that turbo can do

AlanarchySTI

Quarter miles seem pretty close.

G_Ride

iTrader: (5)

I'm not surprised. It makes sense that Subaru made the WRX more driveablefor street applications.

Overbear

and yet it still looks like a Toyota Camry.

joe944

I attributed the torque to the twin scroll turbo mostly.

Javirex23

iTrader: (17)

I wonder what the flow of this twin scroll vs the jdm v8 turbo... Anyone know?

G_Ride

iTrader: (5)

Higher compression of the FA20 helps too.

slow04wrx

iTrader: (3)

This is nothing new is it? the Sti stock has always made only a little bit more than the wrx since 08, fortunately we know keeping the car stock is silly so it doesn't matter.

oaklandish_WRX

iTrader: (10)

Add short, EL headers (begging to be heat-wrapped) and

hmmm, wonder what sort of silicone hose goodies will pop up to aid that nasty-long path to the TMIC?

glider

iTrader: (23)

Doesn't the 2015 WRX come with EL headers stock?

oaklandish_WRX

iTrader: (10)

From DrivingSports review of the '15 STI:

This STI also has unequal headers, which means it retains the trademark boxer sound. Why not equal-length headers like in the new WRX? According to Subaru engineers, it would be more cost effective to simply increase the WRX’s FA-series motor to 2.5-liters. For now, however, STI drivetrain still serves up an epic dose of boxer rumble.

2015 Subaru WRX STI Driven and Reviewed | Driving Sports TV

Edit: funny...my post #13 here was WAY later in real time than #14, but jumped ahead. I broke the interwebz.

hotflare

Yeah Subaru done away with the unequal length going forward per a CEO interview with road and track (I think it was them lol) but they said they'd rather competitive performance vs aesthetics 2015+

Both models I believe

oaklandish_WRX

iTrader: (10)

It does, I was trying to pile on and say that the torque is aided by the (OEM) short, EL headers.

I saw a killer up-skirt shot of the FA20 with the EL plumbing online and damn if I can find it again...