well...sitting in my garage is a brand new dynomax super turbo cat back exhaust system...i got a question about something...well...i need a cat...and i could only buy the exhaust system for now because mine has rotted out and is falling off...and just to have a new center pipe put on and 2 tail pipes onto my existing flowmaster was gonna be 271.20...no way would i pay that when i could buy the new system for 155...anywayz...should i hollow out my cat for now because it is clogged up and when i gather some more cash just put a new one...also...will this system for my 2.8 fit my 3.4 when i put it in...i wouldn't see why not...well..thanx guyz...

 

Yes it will fit if you use the 2.8 intake on the 3.4 it will look exactly like the 2.8, this is how the California boys pass the visual inspections LOL.

I would replace the Cat withe a cut-out, it will save you some money and you will get some more power.

Let me know how it turns out I want to get the dynomax with the 3.4 here sone.
David

 

I have a 3.1 with dyno max, and gutted cat. But I also have a exhaust leak between the both.

Before you take one part of your car, make sure that "clamp" that bolts up to the cat is on right. Mine was put on backwards buy dynomax and I didn't notice it tell it was in car, and that was the last thing I was bolting up. No way I was gonna take it down just for that. So I rigged some stuff up for now.


Gong to a 3.4 will be no problem with that catback

 

Avoid gutting or hollowing your cat as well... It creates an open chamber where exhaust gases will expand and ruins the airflow... Instead, gut it and run a pipe through it...makes better power that way.

 

will our car pass inspecitons without the cat?

 

Highly doubtful.

 

very very doubtful. Sound is obvious, and more fuel smell is obvious. Let alone is not their to do its job.