what restictors are you talking about, ive never heard of this...

 

When i ask them about putting on my headers my tech guy ask if i was going to put cats on as well, i told him no, money was tight at the time. He told me the factory put these restrictors to limit the air flow to the factory cats and headers. He said while he was doing the headers he would drill them out for me and told me it would still pass smog...i dynoed at 275 rwh about 2 months ago before i got the work done. we have a dyno day planed for this saturday and ill post the results next week