1. JB4, does it get you flagged (TD1)? If not, do you need to remove it when you go into the dealer?
https://burgertuning.com/products/jb1-jb4-group-1-vag-tuner?variant=32971474062
1b. Is JB1/JB4 only different because JB4 allows map changes and JB1 doesn't?
1c. TLDR, APR tune is a death sentence basically?
2. Things like intakes don't get you TD1 flagged correct? That is strictly a ECM designation by the VW group?
3. Intakes. I know they don't offer huge gains, it's about the noise for me. I love how this one that I've linked below (over the boring sounding R600), from looks to sound, but does this mod cause any flag, or any serious warranty claim denials down the chain?
https://www.ecstuning.com/b-eventur...h-plastic-duct-black-carbon/eve2tfsiplint~vn/ (any thoughts about this system is also welcomed and appreciated)
4. Catback exhaust should be safe correct, cause it doesn't lift the restriction. The only thing it really does is change the sound, and the downpipe is actually the restriction, so an exhaust itself is safe to not cause warranty issues down the chain. Obviously, warranty doesn't cover the exhaust itself, but everything before in the chain is fine?
4b. Downpipes a problem? This is where you get your real gains, but is it even worth-while if you want to stay under protection?
5. What are some other warranty friendly mods, that are not cosmetic if you know of any?