Osmosis

I purchased my 2.7t A6 4 years ago and I quickly purchased a used APR stage 1 ECU. Currently, I"m rebuilding my engine to stock spec's and I have gutted my precats. How much will it run me to upgrade my APR stage 1 to a stage 2? I have read that APR will do it for free if I have the stage 1 already.

What are typical HP gains going from stage 1 to stage 2? Now that I'm putting everything back together, kind of wishing I went with KO4 turbos and stage 3, but I'll settle for stage 2, heck, she's my daily driver.

I can't express how much I love this car! This A6 quattro drives better in the snow than my F350 crew cab!

Thanks for the info!