[JJR11]

Anyone have Catless headers connected to corsa Npp or just corsa axle back in general ? I’m so ready to hear my car scream when I install my headers ! If y’all got some vids send em up to my Instagram (jjseis.dos)

[Chrome383Z]

A couple folks do. From what I’ve read it’s the best mild/wild system out there. Not cheap though.

I’d run the stock NPP with headers for awhile though, it’s loud as hell at WOT but you can turn it down when you want to. Might want CATs though if you go that route.

[Spaceme1117]

It's never good to go catless. I give zero fuks about if it pollutes or not, but no cats = terrible drone when cruising and the smell isn't very good either much less breathing in gas vapors for your health.

[KingLT1]

Corsa NPP has no drone even catless with the valves closed. Open you get some drone around 2k rpm but not down in the cruising rpm.

I run factory headers, no cats, Borla 60608 resonated X, Corsa NPP. Sound is still really tame with valves closed and screams open. Smells great on E85.

[LT1ornothing]

Originally Posted by Spaceme1117

It's never good to go catless. I give zero fuks about if it pollutes or not, but no cats = terrible drone when cruising and the smell isn't very good either much less breathing in gas vapors for your health.

Switch to e85, it transforms into a carnival caramel cotton candy ordeal, wow, that's a lot of C's...

[yourmomshouse]

Originally Posted by Spaceme1117

It's never good to go catless. I give zero fuks about if it pollutes or not, but no cats = terrible drone when cruising and the smell isn't very good either much less breathing in gas vapors for your health.

I have the Corsa NPP and CSP catless headers with the stock mid section. There is zero drone. It's SOO quiet in stealth mode from inside the car, like a V6 camry. With the valves open, it's about as loud as a straight piped V8 can be. This is why I paid for the Corsa. I gotta admit though, all of these axlebacks sound better with the stock headers and cats, even it's it's quieter.

[WiggyB]

Originally Posted by Chrome383Z

A couple folks do. From what I’ve read it’s the best mild/wild system out there. Not cheap though.

I’d run the stock NPP with headers for awhile though, it’s loud as hell at WOT but you can turn it down when you want to. Might want CATs though if you go that route.

I have to agree with you on this one. I have been running the headers to factory NPP and trust me I love it. Had a fellow rider get the Borla Attack axle back and they swear mines is louder than theirs. I just can't see the need to spend on an axle back at this point the headers did exactly what I wanted.

[ST1LE]

Originally Posted by yourmomshouse

I have the Corsa NPP and CSP catless headers with the stock mid section. There is zero drone. It's SOO quiet in stealth mode from inside the car, like a V6 camry. With the valves open, it's about as loud as a straight piped V8 can be. This is why I paid for the Corsa. I gotta admit though, all of these axlebacks sound better with the stock headers and cats, even it's it's quieter.

Originally Posted by WiggyB

I have to agree with you on this one. I have been running the headers to factory NPP and trust me I love it. Had a fellow rider get the Borla Attack axle back and they swear mines is louder than theirs. I just can't see the need to spend on an axle back at this point the headers did exactly what I wanted.

Headers in to the stock NPP sounds great! Possibly the best combination with headers.

[dfxrte]

can confirm catless headers into stock NPP is unbeatable. No drone at all either, gas fumes POUR out in track mode but other than that little to no smell unless idling at light with windows down for a long time.