I did not find a comprehensive list of Mod friendly dealers all in one place. I did a google search and found a similar thread in MK6 forum which was last updated in 2015. I thought it would be great if we can put together a list here based on our recent personal experience.
NOTE:
1. Tune is not the only mod.
2. Dealers in the list might be more reasonable than an average VW dealer (They might not "abruptly" decline your clutch warranty claim because you have an aftermarket cat back)
Can you share the name, location of Mod friendly dealer and your experience with them.
CALIFORNIA
Galpin VW, North Hills - Post #20
Steven's Creek VW, San Jose - Post #63
COLORADO
Emich VW, Denver - Post #26
CONNECTICUT
Prestige VW, Stamford - Post #15
DELAWARE
Smith VW, Wilmington - Post #7
ILLINOIS
Autobarn VW, Mt. Prospect - Post #12
Pugi VW, Downers Grove - Post #54
MARYLAND
Pohanka VW, Capitol Heights - Post #5
Antwerpen VW, Pasadena - Post #65
Fitzgerald Auto Mall, Annapolis - Post #87
Ourisman VW, Waldorf - Post #90, #100
MASSACHUSETTS
Wellesley VW, Wellesley - Post #10
Patrick VW, Auburn - Post #109
MICHIGAN
Vyletel VW, Sterling Heights - Post #99
NORTH CAROLINA
VW of South Charlotte, Charlotte - Post #40, #62
Leith VW, Raleigh - Post #40
Harmony Motors, Asheville - Post #56
NEW HAMPSHIRE
VW of Rochester, Rochester - Post#74
NEW JERSEY
Trend Motors VW, Rockaway - Post #8
Linden VW, Roselle - Post #8
Gensinger VW, Clifton - Post #22
Jack Daniels VW, Fair Lawn - Post #22
OHIO
VW of Streetsboro, Streetsboro - Post #3
TEXAS
Bobby Beck's VW, McKinney - Post #45, #53
VIRGINIA
Valley Volkswagen, Staunton - Post #13
Lindsay VW, Sterling - Post #16
Stohlman VW, Tysons Corner - Post #64
Fairfax VW, Fairfax - Post #64
Checkered Flag VW, Virginia Beach - Post #92
Flow VW, Charlottesville - Post #92
WASHINGTON
Auburn VW, Auburn - Post #67, #68
CANADA - BC
OpenRoad VW, Burnaby - Post #88