Right Now I have Nismo Exhaust.
I want more gains
and for the sound
I love the Nismo exhaust sound but I want more
louder and deeper sound.
What I know is that these two produces similar gains in power
and price is also almost same .
I read that People don't like the raspy sound with testpipe
and I really don't want the raspy sound,either
but from what I know LBMS test pipe with resonator
eliminated the raspiness sound and sounds deep and throaty.
Which one would increase more sound and gains??
I need your advice
Which one you think better???
Thanks!!~

 

Power
For pure power, test pipes will always beat cats, including high flow cats simply because it is less restrictive in airflow.

Sound
For sound, test pipes simply suck due to the raspiness. The LBMS test pipes with resonator remove the raspy sound you will hear at 3,500. However, there are occasions when you may hear the hint of the rasp but nothing like test pipes without a resonator. If sound is a concern, I would recommend highflow cats, either LBMS or Random.

Smell
Yes, I have to bring this up. Test pipes have no catalytic converter and therefore, you will smell like a 1960s car. If you're worried about this, go with a highflow cat.

The Bottom Line
If smog and sound are a priority, go with a highflow cat. If you want pure performance, the LBMS testpipes with resonators will give you testpipe performance and not leave you sounding like a Honda fart can like other test pipes. My car sounds good, and the test pipe performance will beat highflow cats.

 

Thanks for Quick reply!!
Maybe I think I should go with high flow cats.
but I am not sure yet

 

Oh!
and How much it gets louder
adding LBMS testpipe w/resonator to aftermarket exhaust??

 

http://members.aol.com/performancenismo/dyno2.avi

high flow cats on the dyno with nismo exhaust only