I just had my primary cats taken off and replaced it with a straight pipe. Before this I had a:
-Remus Powersound muffler
-Secondary Cat Delete
-Resonator Delete
-2.5 inch single pipe from headers back
Here's what it sounded like a while ago:
I loved the sound of it but I wanted more power so I removed the primary cats from of my headers. It was WAY too raspy especially at 3,000 RPM. To try to fix it I had a Magnaflow Glasspack put on as a resonator. It got rid of a lot of the drone and rasp throughout the rev range but at 3,000rpm it was still bad.
And according to an OBD scanner my engine is cutting torque because of minimal back pressure, hence why I added a glasspack. Now its still too loud I was wondering if I should add a high-flow secondary cat. I'm getting a re-tune when my decision is made so I want to have as much airflow as possible without losing too much back pressure and being too obnoxiously loud. Should I:
-keep the glasspack and add high-flow secondaries
or
-delete the glass-pack and add high-flow secondaries
or
-leave as is and get used to it.
I want optimum back pressure and flow.
I'll get a video when I can, my car has been in and out of the shop because of problems with the front axles.