Hi Guys,
I am driving a IS200 and recently I had my 2 x pre-cat removed. My Main-Cat is stock. But whenever I reach High RPM around 4000-5000 rpm I could hear a high pitch sound coming from the main-cat.
Any idea on how I can fix it?
BTW is it normal that stock exhaust will sound louder with the pre-cat removed?
Your help is greatly appreicated
Thanks
N C