Dyno Tune: Brad@Enging Logics,322.2WHP/318.1WTRQ, TD06-20G, 2.5L, 21PSI
I went into this build hoping for 400's. 5 minutes with Brad at Engine Logics told me that was not going to happen with this turbo. The first run was done at wastegate spring pressure and a minimal tune to make the car safe to drive to Engine Logics. I am happy where it is for now, but will probably be looking for more soon. The power level feels about where it was on my first build of the Legacy (before I took it back to stock to sell.) After getting lowball offers, I decided not to sell and make the car what I wanted it to be. That is where we are now.
I also started with a transmission issue, that is NOW SOLVED. Brad said he had experienced the same issue on 350Z and G35's. It turns out that the load scaling being modified from stock throws off the TCU and causes shifting issues. Back to business. There were no real issues aside from one small vacuum line coming off of the evap system.
Event: Dyno Tune
Loaction: Engine Logics
Ambient Temp: 68 F
Car: 2005 Subaru Legacy GT
Tuner: Brad at Engine Logics
Dyno Info: Dyno Dynamics
Transmission: Stock 5EAT
Peak Horse Power at RPM: 322.2 @ 6500
Peak Torque at RPM: 318.1 @ 4500
Baseline hp/tq for a stock on same dyno: Didn't have one at the moment, but was told a stock STi puts down 220whp on this dyno
Target Boost: 21 PSI
Target AFR: 11.0:1
SAE Correction factor: 1.0
Fuel: E10 93 Octane
ACL HX rod bearings with Polydyn coating
ACL H main bearings
JDM 12mm oil pump
Crower H beam rods
Mahle Powerpak 4032 alloy stock compression pistons
Stock heads and gaskets
KS Tech 83mm cold air intake
Perrin silicon turbo inlet
Genuine MHI TD06-20g with 8cm hot side and 1 bar internal waste gate
Fast Motorsports TMIC (Process West clone)
Stock throttle body
Stock intake manifold
Stock exhaust manifold
Cobb Coated and wrapped up pipe (no flex joint)
Cobb 3” catless down pipe
Cobb 3” mid and y pipes
Walbro 255lph fuel pump
PE 850 injectors
Stock lines and stock FPR
GM 3 Bar MAP sensor
B&M trans cooler
For those that may see something non-power related and have questions.
Sherwin Williams black paint with matte clear coat
JNA 08 WRX front lip
TRF rear diffuser
Sylvania silverstar turn signal bulbs
Removed amber lenses in headlights and painted chrome flat black
Rota 17” rims
Swapped tan interior for all black interior
JCS cubby mount gauge pod
Prosport Halo boost and temp gauges
Highline Car Audio double DIN kit
Some kind of intermediate suspension, stiffer than stock, but not too much
Brakes, probably just nice pads, but I might go 4 pot
Black out tail lights and mirror signals
High quality HID kit, maybe a projector retrofit
Upgraded turbo and/or turbo wheels
HP and TQ Comparison
HP and TQ Final
TQ and PSI Final
Car on Dyno
Some random run along the way. I suck with a camera phone so the final run didn't come out clear.
So under 60mph, not much power?
Nice looking car
Not sure about the under 60 but it is a bit of a dog on a launch from idle. My car tends to down shift when I want to go fast, so really it isn't bad for most driving. Next step is getting to the strip. Once I have solid documentation on this I'm swapping compressor wheels... Maybe even turbine wheels. Staying journal bearing to save on costs though.
Dyno pull would have shown better numbers if it was a pull in 4th gear instead. 4th is much closer to the 1:1 ratio they like to see in a MT dyno pull.
The 20g with the 8cm hotside is what is killing your launch, but being an EAT car you probably shouldn't launch it really hard. Make your time on the back half of the 1/4 mile once that 20g is spooling.
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