Thread: ZZP I/C core problem...

So I bought a previously owned/ new ZZP I/C kit. After receiving it I noticed there was no hole in the core for the EGR (I think its for EGR, I didnt know there was an option). Can I just drill a few 1/2" holes through the core to get this to work? This is a CA car so I need this to function to pass smog.

This is one mod I REALLY wanted...

Thanks,
Ed