is anyone running a 99-00 Si with a DC JDM 4-1 header with the N1 cat-back system with no cat or a test pipe? what does it sound like? is it real raspy and loud?

 

hahaha N1 + no cat???? thats gonna be LOUD as fock!!!!

 

"apex n1 cat back with no cat" sounds like this:
"apex n1 back"


Just kiding, it'll be loud as hell mang.

 

yeah its gonna be EXtremely "LOUD"

 

Yup. Loud and raspy. And thats before vtec hits. Got the DC JDM, N1 cat-back and a 2.5" test pipe.

But its all in the name of performance right...

 

is that even with the silencer in?

 

Nah, I haven't put in the silencer since...jeez I can't remember.

 

on my 94 civic with b16a i have the jdm dc /testpipe/ n1 and i love the way it souds mine isnt loud till vtec even then it sounds sweet on low rpms its deep
with the silencer in its very quiet even with the testpipe does make a buzzing sound in vtec though

 

itll probably be hella deep and mighty raspy but i am sure that its gonna sound nummy

 

USDM ITR header, 2.25" resonated test pipe, Apexi NI catback w/ no cat....
w/ the silencer, it is quiet up to around 4K rpm....then moderate until VTEC....
w/o silencer, it is quiet until around 3K rpm, then moderate until VTEC....

the bottom and top end sounds the same to me w/ or w/o the cat....the only difference seems to be midrange. It sounds better w/o the cat, more of a constant rumble, not a half *** rumble/pitch (kind of can't decide which noise to make)....it is easy enough to shift early around cops....go for it!!!

 

is the power gain worth it? can u even feel a power gain. my friend has a stock GSR and keeps talking smack that he will still beat me...u guys beat GSR's?

 

I have that combo on my Si, but I have a B18C1 bottom end which changes sound slightly. My car sounds like a swarm of angry bumblebees when I'm on it, but its pretty deep as well. When cruising around its not that bad, but when on the throttle its a bit loud.

 

yes its loud as ****, but you can also get a shop to make you a testpipe with a resonated section so it will add a much deeper tone instead of a straight pipe section.