I see poeple putting in test pipes and removing the stock catalysers and i'm wondering what is the actual power gain ?

And any difference in sound ?

Other noticeable differences ?

P.s. my cat is still good so not too restricted.

 

you guys call it a catalyser up there? lol

if its still good and not in pieces, i doubt you'll see much in the way of power (maybe 5 or 10 hp?) but it can't hurt. A test pipe will change the sound and it'll definitely smell cool though, especially if you run 93

EDIT: also, no emissions tests? you WILL fail w/o cats

 

No tests here (only an inspection if your car was not plated/registered for over a year... so anyone who renews their plates every year is fine, and even though it's just a visual check and like handbrake, lights, rust and stuff).

And anyone got a video of the sound ? does it sound like a civic?

 

I'm sure you could find plenty of vids on YouTube.

 

if you are 1.8t you will see gains...

 

i have a video on youtube of my exhaust.. its with a 2.5" VMR test pipe to a 2.5" downpipe to 2.25 resonated borla exhaust all the way back.. it sounds awesome.. has a little gargle.. no civic sound at all whatsoever.. my car in my opinion of course haha sounds how a 4 cylinder car with an exhaust should.. of course i have other mods as well which also adds to the sound but, the gains i would say are minimal.. it adds a little bit of torque down low and the turbo can spool faster and easier.. its def worth the money to get one thats for sure.. and the smell.. well i burn 93 and she can get a little stinky with the windows down in the heat of the summer.. but i love it.. gives your exhaust a little more loud..

http://www.youtube.com/watch?v=a5uANgdlszg

 

my brothers mercedes e420 has its cats all dead and you can hear them rattling from under the car. when he went to get his smog check it passed with no problems. aint that funny? ^^

 

Not much.

 

JW I've talked to a buddy who lives in another county who might let me register my car threw it so I don't have to have a cat. My question is while were on the topic is will a test throw CEL?

 

yea starfish in a normal application it will, but my APR tune has a test pipe code out built in, so when i threw mine in, i had my Oxys just thrown in and away i went.. no codes.. but if your not tuned, or your tune doesnt have the code out for it, its most likely gunna, and you gotta space the Oxys out a little bit further so they arent so close to the flow..