xluben's 2011 WRX: Spec B 6 Speed and Rotated PTE 6266 by xluben

3 minute(s) of a 643 minute read

Stage 2!  

Installed the COBB downpipe yesterday and had it re-tuned.  

Sounds great, and pulls much harder than Stage 1!

Here are the numbers from the tune:

I finally was able to install my COBB downpipe and get my 2011 WRX retuned. Baseline, Stage 1 and Stage 2 information is included. Stage 1 tune was done with the SPT cat back already installed. Only change since then was adding the downpipe. Tuning was done on 16" steelies and winter tires (just like the baseline and Stage 1 tune).  

RomRaider log was used to create the dyno plot using Virtual Dyno. Seems that no one liked the Dynojet numbers from my last thread (HERE), so I set CF=1, which makes the Virtual Dyno read similar to COBB's dyno (LINK). Upped the smoothing to 5 to get rid of some bumps in the plots (which lowers the readings slightly).

I am really happy with the tune. Nuke kept it conservative enough that I shouldn't have to worry about my car, but still made it much, much quicker than Stage 1. The mid range pull is great! Nice big torque numbers from 3k and up. Car feels so much stronger now. The COBB downpipe also makes it sound a bit meaner 

Feel free to discuss!

Event: Stage 1 Road Tune

Location: MN

Ambient Temp: 20F

Elevation: 725ft

Weather: Cloudy

Road Conditions: Flat

Tires: General Altimax Artic 215/55R16

Car: 2011 WRX 5 Door

Tuner: Nuke

Dyno Info: Virtual Dyno - CF=1, Smoothing=5

Transmission: Stock 5 Speed

Gear: 3rd

Target Boost: 18.5psi

Target AFR: Unknown

Fuel: 93 Octane Unleaded

Engine/Power Modifications: SPT Cat Back Exhaust, COBB Downpipe

Driveline Modifications: None

Suspension Modifications: None

Other Modifications: 16" Steel Wheels

Baseline:

Peak HP at RPM: 239hp@6,000rpm

Peak Torque at RPM: 259lbft@3,200rpm

Stage 1:

Peak HP at RPM: 251hp@6,000rpm

Peak Torque at RPM: 294lbft@3,400rpm

Stage 2:

Peak HP at RPM: 275hp@5,600rpm

Peak Torque at RPM: 316lbft@3,400rpm