Another exhaust question!

**acey** · 15-05-2008 09:56 PM

hi guys,

currently im weighing up between the BC spec II and the 5zigen A-spec catback

my car is an eg si and im running a stock b18c mated to the jdm 4-1

should i be expecting any gains? and which would produce more torque out of the two?

any other suggestions are welcome. im after a performance orientated exhaust. dont care about noise, just after the gains

thnxall ^_^

**bighaks** · 15-05-2008 10:05 PM

there is a good amout of power to be made in a metalic cat convertor. the system with the same size internal in the muffler as the pipework is going to make the better power. alot of the jap systems have clearly visable fixed restrictors on the inside of the rear muffler too keep them quite

**Limbo** · 15-05-2008 10:15 PM

wahooo bighaks speaks!

yeah the steel cat certainly made a difference you notice.
Prob just change the muffler & reasonator as the OEM will restrict compared to a straight thru. It will be noise but you don't mind that do you?

i'd just get your exhaust adjusted if i was you.

Change to steel cat, get a straight thru reasonator & straight thru exhaust.

The choice of parts are gonna make nominal difference. They only make a difference when you start to worry about noise.

**rpm boy** · 16-05-2008 09:30 AM

Ive heard that the "Twin Loop" exhaust is up there for getting power to the ground and barable noise. Anyone know anything else about them?

**Limbo** · 16-05-2008 10:20 AM

twin loop is for making the car quieter, its not really a performance exhaust

**SXC-84K** · 16-05-2008 03:06 PM

sup ace guess who this is biatch! LOL umm y not get a custom mandrel bent stainless exhaust? get a test pipe while ur at it bro cause im pretty sure u dont care if u get defected :P