NC had a few shops that got hit hard by the feds due to deleted and related tunes recently. Fines are in the millions. Not many places are advertising this type of work as it's a Federal crime to modify or delete emissions items...even if it does make them more reliable and more efficient.
Also your title says in NC and your posting says Greenville SC, those two Greenville's are no where close to each other. Makes it sound like you're a fed....and not a very good one if you can't keep your locations straight(not sure there are many good feds when it comes to three letter agencies). No offense if you're not a fed, my posts are riddled with typos thanks to phone made posts.
Greenville pretty close to NC border but not very populated over on That area of NC compared to Greenville I’d think. I’d hate to think it’s a fed but not a long shot with VW scandal and maybe there’s no more openings to investigate parents at school boards or Latin rite Catholic parishes. To op: Probably not a good idea for the forums and the rest of us to be soliciting illegal stuff I’d imagine.
I have to agree with the others. Without context your request is very illegal. Now if your bracket racing or off roading then there is plenty of performance shops that might be of value.
BTW - TDIs with DSGs make great bracket racing cars!