Grand National exhaust question

[GMBoy]

I do have the original cat still on the car. Car has 64k miles. The exhaust is 3".

 

[SteveSRT8]

Originally Posted By: GMBoy
I do have the original cat still on the car. Car has 64k miles. The exhaust is 3".


How unfashionable. Get your hacksaw and remove that cat immediately!

 

[turtlevette]

I ran a testpipe then had the stock muffler cut out. It sounded real nice and was real fast. Maybe weld a thick piece of steel on top of the muffler. The drone is probably coming from the muffler tin canning.

 

[artificialist]

Originally Posted By: GMBoy
I do have the original cat still on the car. Car has 64k miles. The exhaust is 3".


Is it a pellet-style cat? If it is, replace it with a grid type cat. It will make a huge difference in performance.

 

[GMBoy]

Originally Posted By: artificialist
Originally Posted By: GMBoy
I do have the original cat still on the car. Car has 64k miles. The exhaust is 3".


Is it a pellet-style cat? If it is, replace it with a grid type cat. It will make a huge difference in performance.


Not a pellet style, but I am looking to replace it with a hi flow cat/down pipe piece one day down the road.

 

[007]

Would adding exhaust tips change the exhaust sound and possibly cause my drone?

 

[GMBoy]

Originally Posted By: 007
Would adding exhaust tips change the exhaust sound and possibly cause my drone?


Tips would have no effect