9914s

Did anyone tried the Cobbs tune?

silverarrow

Anyone?

Larry Cable

Nope I went with the Softtronic tune.

9914s

I have been running the Cobb tune for about 6 months now, track and street no problems and yes it’s faster.

Cay_PI

Nobody did a before and after dyno? If I tune mine, I will flash it directly on the dyno or let them optimize it on the dyno. The promises for this tunes are so different and partly unrealistic.. some say 5hp for a .1 and others want to make 30hp at peak. Don't know what to expext.
Also, nobody could explain if the torgue dip in the midrange with the dundon street headers can be eliminated with a tune....

monochrom3

I've seen the before/after from COBB directly, and i've raced down the back straight of COTA against the COBB GT3, and it definitely pulled me. Saw 5-6 MPH difference in vmax on the back straight. So, now i too have COBBs tune, and enjoying it

silverarrow

Thank you for the feedback. I'm considering Cobb as well. Had it on my Subie back in the days

N99x_

Behavior I’ve observed logging mine; fresh off an ecu reset / flash while airflow calcs are lacking adaptation, transient lean conditions > 8-10% off target will cause the ecu to limit torque until the stft lambda correction brings O2 much closer to target lambda.

I don’t have headers on mine, but airflow model might not be able to adequately adapt and remain off by so much that you get transient lean condition and ecu limits torque due to this protection mechanism. In theory midrange dip could be helped by calibrating the airflow calcs properly. Ignition timing is another issue, the stock timing map will ramp in lots of timing through the midrange and then drop to 30-31* as the engine’s VE comes up. Cars with headers might be breathing better or worse through the midrange and optimal timing throughout the midrange will likely be significantly different than stock.