hello elchfreunde have interest in having my t4 automatic jg. 03 chips. does someone have experience with the tuning? how is it with the durability of the motor? how much does it bring in more power and is it even useful? It is still worth mentioning that I am mainly travelling in Switzerland and I want to have a little more of rotating momennt so no speed orgies need. which provider would be recommended? thank you in advance for your advice gruss