Catbacks to me are overpriced so Im debating on getting a high flow cat and header instead. Is it worth putting a HF cat on a tsx rather than sound or would there be a noticeable increase?

 

If you feel catbacks are overpriced, then they are. They are pretty much only for looks and sound (you gain like 2 to 3 whp, but that doesn't really register on the butt dyno) .

A high flow cat will make a pretty good difference in power. The stock 04/05 has a 900 cell cat, the 06/07s have 200 cell cats, and the RT has an 100 cell cat. I remember somewhere that a reputable member gained 10whp from an RT cat with an 04/05 TSX and posted a dyno chart to go with it. Combined with a header, it will make a very noticable difference in power.

However, if you do decide to go with the RT cat, there are some things you should know. It will give you a CEL eventually for faulty catalyst and mine rattled alot because of the floating flange design.

You can get spark plug defoulers to take care of the CEL and get the flanges welded to take care of the welding.

 

get a custom one that doesn't throw a CEL or make some rattle

 

Renault Cat's

 

04/05 = 900 CELL
06 = 400 CELL
RT = 200 CELL

 

Is that a Metal cat?
JTso special?

 

I just pulled the cat cell numbers from memory, might not be 100% right, but it illustrates the situation

 

thanks for the correction

 

are there any instructions out there to make a custom CAT? Also, what are "spark plug defoulers"? I have no idea what those are, any link to a reputable site to get them?

 

Yeah, for sure man. Good post though

 

 

You don't need to get this anti fouler if you have a well built hi-flow cat. I don't have one and no CEL.

What it does is to "Get rid of the CEL caused by a raceheader or testpipe. The simulator works by relocating the sensor away from flow of exhaust, tricking the sensor into thinking it is reading the correct amount".

 

I ran my RT cat for 15000 miles + without a CEL, then one day I got it. When I installed the defouler it went away right away. Might as well install once when you install the cat. It will only take 5 extra minutes.

 

I don't have RT cat.
Unlike RT cat which uses an unknown cat core, Metal Cat is a working catalytic converter core.
I have had my cat for a lil' while, no problem so far, not even a single issue.

 

does the rt make a difference in sound?

 

TSX2345, do you know the cell count of the Renault cat?

 

It, and the Magnaflow I had before it, made the exhaust sound a little louder.

 

I run the RT cat and no check engine light and no rattles, you might be having rattles cause you didn't torque it down right.... I also run it with the CT catback and it sounds great! Plus a lil tiny extra mileage and a lil registry on the butt dyno

 

if you do want to get a defouler go with www.strutking.com

 

I don't.

 

If I am not mistaken it's a diesel cat, I cannot find the source which I read it from. It's also suppose to last 100k+ miles

 

I got a magnaflow highflow cat and basically its obII so they had no issue with the check engine light.

Also my exhaust (fujitsubo) on 05 was noticiably louder than before.

cat = 900 cell
highflow lower so 400

 

Magnaflow is 300. Are they OBII? I don't really know but they do throw up some CEL sometimes, whenever I drove slow @ a constant speed, weird.

 

so what are our options as far as high flow cats and what are their prices?

 

where did you purchase that?

 

what's the cell count on the Metal Cat and do you have to custom make those? How do you go about that?

 

I forgot where I purchased the core. You can just google it.

 

200.
Yes.
http://www.metalcat.com.au/

 

Will the rt cat pass the emissions test?

 

If you don't have a check engine light and they don't do the sniffer test in your state then yes

 

RT will pass a sniff test too. At least, here in VA.

 

would it be beneficial for me to swap the Mugen Cat for the RT Cat?

 

I believe your Mugen cat has a different front exhaust flange.

 

No no, keep the Mugen

 

For an '04/'05 owner, would it be beneficial to go with a stock '06 cat? Not as extreme, but still, sounds like a big jump.

 

i googled and found NOTHING!
HRJ where!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! lol

 

I found nothing too. Maybe no one carries Metal Cat anymore
Btw, it's quite hard to make one since you have to get the correct flanges, stainless steel pipe with the correct dia & length, a good welder, etc...

 

ok screw it. i'll trade you my 06 one. for yours ;-) lol
TRADEEEEEEEEEEE Lmao