[jaybee924]

Originally Posted by KingLT1

Just went out for a drive and the Corsa setup is absolutely amazing. So clean sounding inside the cab. No drone at cruising speeds even with the valves open. Very throaty sounding part throttle and screams bald eagles @ WOT. Close the valves and it's stock NPP quiet.

I would definitely put the Corsa NPP in a nother league above the Flowmaster as it should be for the cost. The Flowmaster is still great for the money but I would suggest spending the extra if you can swing it!!

Sounds great. How do you think it sounds loudness wise vs. a Borla Atak/Sport if you've heard one in person with headers or deletes? I went with a Borla S-type on my ZL1 knowing later I'm going to add cat deletes or headers later. I seen a lot of your build and notice you're going from cat deletes to headers. I know you have a lot of power, how much do you think your going to pickup horsepower wise?

[KingLT1]

Originally Posted by jaybee924

Sounds great. How do you think it sounds loudness wise vs. a Borla Atak/Sport if you've heard one in person with headers or deletes? I went with a Borla S-type on my ZL1 knowing later I'm going to add cat deletes or headers later. I seen a lot of your build and notice you're going from cat deletes to headers. I know you have a lot of power, how much do you think your going to pickup horsepower wise?

I haven't heard a Borla in person but If I had to guess the Corsa NPP with resonated x would be similar to the Borla Sport with non resonated X with valves open and a bit quieter with valves closed.

I mainly bought the headers because the catless units seem to be getting harder to get. I figure I'll sit on them for now. I only expect to gain 15-20whp coming from cat deletes.

[Joshinator99]

Originally Posted by KingLT1

I mainly bought the headers because the catless units seem to be getting harder to get. I figure I'll sit on them for now. I only expect to gain 15-20whp coming from cat deletes.

I’d suggest you weld in a bung for your wideband into the collector then send them out for ceramic coating before you install them.

[KingLT1]

Originally Posted by Joshinator99

I’d suggest you weld in a bung for your wideband into the collector then send them out for ceramic coating before you install them.