I have a rtek and im curently doing a rebuild on my motor with a bigger port i would like to tune my car with the rtek im really satisfied with the upgrade i have a 1.7 and i would like to know what is the price to upgrade to the 2.1? really intrested in doing the upgrade but i want to make sure it fits my budget and if not what do you recomend...thank you

 

You are using the S4 TII ECU right? and there is a 1.7 chip in there? its gona be about $350 and you have to send out your ECU to them to get a daughter board installed.

 

http://www.digitaltuning.com/index.p...age=2&ecu=S4T2