GreyGoblin

Tuning for the 1st time. 2012 S4, manual, sport diff. Upgrading suspension (new springs & swaybars), APR Tuning intake & touring exhaust. Tuning shop offers both GIAC and APR. Looks like both manufacturers offer option of handheld switcher allowing the user to cycle through up to four different engine calibrations and operating modes. I think GIAC costs $1195, APR is $1299 ($150 each for the switcher).
Key issues:
1) reliability;
2) performance; and
3) if possible, the ability to erase/mask the tuning during visits to dealer for warranty repairs.
Any thoughts?

speed_racer

Go APR. I jumped ship from GIAC to APR and picked up .6 in the 1/4

Pyromatic177

Wow .6 is a big jump! Was that APR's newest Software as well?

speed_racer

Yes, it was, And that was even with a stock DSG tune.

DarinS4Turbo

What was your time, speed racer?

speed_racer

At that time I was running consistent 12.1's.. Now my best is 11.667 !!

Pyromatic177

Man do I love the sound of an 11 sec car!!!

DarinS4Turbo

I'd say that's worthy of its own thread (with a post of all your mods!) Very few S4s get to that.

westwest888

Get whatever tune your local motorsports dealer supports. You're unlikely to personally run a low 12's quarter mile unless you're really into that sport and minimizing the variables that lead most people to run a 13. It's not like a Tesla where you grandmother could run 10's all day. Gasoline motors are fussy and are hyper sensitive to atmospheric conditions, fuel quality, heat soak, and every single mod you have working in perfect harmony.

speed_racer

Installing my 2 piece rotors and lighter wheels first, then Ill document for the world. My best time was at a -569 DA