Fumes
 

Need some advice. I installed z1 hfc and a catback exhaust. I used the z1 gaskets on the hfc with no rtv since it’s not recommended. I’m getting fumes in my cabin whenever the HVAC is on, recirculate or not. I took it to two different exhaust shops, one says that I have a leak at the manifold to cat flange because all the aftermarket gaskets are ****, and the other shop found no leak. The only recommendation the 2nd shop said was to check the cabin filter but I put one in roughly 6mo ago. I have found nothing from searches so I’m pretty clueless. I figured I might just have to get back under and rtv the gaskets.

I also have a Stillen g3 so I was thinking maybe there’s a cracked line from the pcv system but couldn’t find any.

No one is having luck with the Z1 gaskets. The first shop is right. Most are recommending the FI gaskets... I need to pick up a set myself.

Figures... I used those when I had test pipes, thought I had a leak then so I figured I should try out z1’s but I guess that wasn’t the case, probably just from the test pipes themselves. I asked FI, but is RTV recommended to use with these as well?

Third time I’m trying to make this right... :shakes head:

Sorry to hear about your unfortunate luck. You are not the first person I have heard that had exhaust leaks with the Z1 exhaust gaskets. Try the FI or AAM exhaust gaskets they are great quality and I have had really good luck using them. Try to find a reputable exhaust shop to bring your Z to.