Audi TT 225 BAM engine N75 and N249 delete

[Allmine]

Hi all, I just bought two of these please click on the link 1.8T 20v Turbo N249 N75 SAI Bypass for Ibiza Leon Cupra Golf Polo TT A3 A4 VAG | eBay to do the delete and was wondering if anyone has done this and what effects they have had good and bad if any?.Thank you in advance.