I have just currently purchased a 2009 TTS and have APR Stage1 ecu upgrade. I was wondering what other mods I could do. I just purchased a Milltek cat back. Can anybody help with what CAI I should run and where I can get a down pipe for a reasonable price. I also have a HPFP that I took off my A4.

Thanks

 

Check the 2.0t section on vwvortex.

 

Since your a 2009 id reccomend the Type D diverter valve upgrade first. Running higher boost with an apr tune will probably kill your stock valve.

Nuespeed makes an intake kit and Forge makes the intercooler. My 2011 TTS is running Nuespeed Intake, Stasis tune, type D diverter, Nuespeed K04 discharge, and milltek downpipe, HFC, and exhaust.

 

What size diameter is your milltek, I just put a evo ms intake and will probably change dv how much did yours run and how much was your discharge pipe?