ATP123

Hi,

I plan to do some exhaust mods soon and I was thinking of deleting the center sub-cat and replace it with either a 2.25" pipe or maybe put a straight through resonator, and also deleting the two resonators before the mufflers. I also eventually will replace the mufflers.

Does deleting the center cat force any lights to go on? will it also effect emissions?

Thanks

oldManTan

i'm interested in doing the same thing as well. have no idea about any lights or anything though.

1JZPWRD

iTrader: (59)

I am pretty sure it will affect the emissions. If you decide to remove the center cat, use a 10 inch X pipe. Proven to give the best torque increase, if any.

ATP123

sweet, I'll keep that in mind. Emissions wouldn't be affected to the point where I would fail the test right?

SC400slide

iTrader: (11)

Wait a second, I thought that "center" catalytic converter was for Cali emissions only? I removed my Y-Pipe only to find out that the entire cat is empty.

oldManTan

in illinois if your car is older than 95 you don't need to go through emissions at all. so check your regulations first, might not even have to worry.

bigwhite

Is this guy working on an SC3 or SC400? Im assuming hes talking about the main ct. where the to exhaust pipes come off the engine and join together.

ATP123

It's a 2000 sc400 and yes, it's after the first y

ATP123

I thought all us spec had them?

bigwhite

That is more of a resonator, its an open pipe with packing around the edge. 2000 SC4s are hard to find, enjoy.

oldManTan

Well its a 2000 so u gotta worry about emissions for 6 more years

bigwhite

No emissions in our county.

ATP123

A little update:
Yea, the center is a resonator and I decided to do an almost cat back exhaust. I did an x pipe and from the x, it goes straight into the mufflers with some new bends. The only thing I kept from the original exhaust are the mufflers because I was on a tight budget.

I like the way it sounds now, but how restrictive are the stock mufflers performance wise? I've hear people say they are free flow and I've hear people say they are restrictitive.

TonyN

iTrader: (1)

shine a light into the tip, it is a angle straight design, not much restriction