I have a 2005 Scion tC, has 140,000 I have a weapon R short ram intake, a catback exhaust, and a dc sports header, my car doesn't like it everytime I put any new parts on it, for instance, when I put my header on it started shaking real bad when I hit around 70 mph, thought it was my motor mounts so I replaced 2 of them.. And it was still shaking, well after 100 miles of me installing my header it stopped shaking..(I'm guessing my ecu had to re-learn my header) This was about a month ago, well now the shaking has came back.. But around 20 mph in 2nd gear... Here is my question, should I
Get a chip? Should I get my ecu flashed?? Should I get it tunned? Anyone had these problems?

 

yesget the chip flashed and tuned

 

Dyno tune? Because I can't find anyone around me that can street tune a scion

 

Welcome to the site Sumtallguy, thanks for joining us!

 

dyno tune is the best you can get