u/Interesting_Ad_9591

I’m looking to delete my 3.0 TDI. So if I delete the DPF & the adblue, do you need to delete the egr ?? Is it just recommended or is it necessary ?

I’m trying to decide if it’s worth doing the timing chain, tensioners and guide & deletion on a 2015 A6 TDI w/162k or there’s a 2016 A6 TDI I can get for $24,000 with 58k miles.

I’m looking for recommendations on what companies people have used for deletion & tuning. Darkside ? ECU Programing ?