Im looking to put an invidia q300 dual on my 02 and was just wondering how it would sound and if any power gains? Im also thinking about putting a test pipe on it but i dont want to have a check engine light? Or would i?

 

search...all those questions have been answered and there are sound clips

 

over and over again

 

I had mine with an Invidia test pipe. Great exhaust with good sound. Quiet when you want it and great sounding in Vtec
I bought my test pipe with an o2 sensor so no CEL