Can anyone who owns these comment on how much louder the car got after the headers? I removed my Megan midpipe because I thought it made the car too loud. I feel like it lost a bit of performance though, and was hoping to gain it back by installing the headers and keeping the stock midpipe.

 

I wonder if my car would sound better now:

Stock headers>Invidis Mid>tanabe axel back
or
PPE Headers>Stock Mid> tanabe axel back

and i wonder how much extra hp it would be to go with the 2nd option

 

Loudest will be PPE Headers > Indivia Mid > Tanabe Axel back forsure hahah

 

But which would give me the more HP and such. plus i need some cats on there and dont really feel like paying for the high flow cats.

 

Only a dyno will tell. There can be speculation and you can accurately figure PPE + oem mids + tanabe axleback will give you greater gains than oem headers + invidia mids + tanabe axleback because PPE gains > Invidia gains.

 

Kybball - Not sure if you'd pass emissions with just the secondary cats.

 

Mont, do you have the high flow cats on yours?