What's the best cat

**acuraboy** · June 27th, 2001, 02:03 PM

I still have my stock cat. I was thinking of replacing it with a random technology or a catco. which one do you guy's recommend?

**austrian type-R** · June 27th, 2001, 04:21 PM

Jump on the Carsound cat. What I?ve heard best bang for the buck and this cat is also the best flowing one. You can purchase it at Magnaflow for 66 USD w/o shipping, this is the company which also makes the Carsound cats. I have myself a 3" one and I?m very very happy with it.

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Supercharged ITR?98 @ 5.5psi
BTC unit, Apexi VAFC, K&N short ram intake, skunk2 cam gears, Kamikaze 2.5", ceramic header, Thermal 3" exhaust, RC 310 injectors, Cartech FMU, AEM FPR
http://www.geocities.com/superchargedtyper
http://albums.photopoint.com/j/Album...622&a=12515817
http://www.geocities.com/autitr/myin...l?991952862150

**randomwalk101** · June 27th, 2001, 05:18 PM

Do you a # or website address for Magnaflow? thx.

**Sonnyballs** · June 27th, 2001, 05:41 PM

I got my OBD2-compliant 2.5" Carsound cat from Dave at SMS Products. It fits like OEM, sound like OEM, flows like twice as much as the stock 2.25" cat, the quality is nice, and Dave has excellent customer service.

I highly recommend the Carsound cat and SMS Products.

Sonny

PS-Dave can be reached at: [email protected]

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Sonny Van Hook ([email protected])
2000 Supercharged Civic Si @ 6psi
1999 Tonykart/Honda 80cc Shifter

**Boyd B** · June 27th, 2001, 08:15 PM

what would be a better choice a testpipe or a carsound cat.

**Sonnyballs** · June 27th, 2001, 09:28 PM

<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by Boyd B:
what would be a better choice a testpipe or a carsound cat.<HR></BLOCKQUOTE>

Test Pipe Advantages:
-Cheaper
-Flow is better

Disadvantages
-Totally illegal; stiff fines if you get caught
-Can make the car substantially louder in some cases
-Not easy to do an OBD2 car because of 2nd O2 sensor

I considered a test pipe for my car, but I decided to go with the Carsound 2.5" cat and I am totally happy with that decision.

Sonny

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Sonny Van Hook ([email protected])
2000 Supercharged Civic Si @ 6psi
1999 Tonykart/Honda 80cc Shifter

**cpa** · June 28th, 2001, 10:17 PM

Sonnyballs-

When did Carsound start making an OBD-II compliant cat? I heard from Carsound that it's been in the works, but is not expected any time in the near future from Carsound directly. They also weren't aware of any OBD-II compliant or CARB approved cats for OBD-II. Is yours a universal fit, or custom fit?

Also, does anyone know the flow diameter of a stock 96 GSR cat?

**Sonnyballs** · June 28th, 2001, 11:15 PM

<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by cpa:
Sonnyballs-

When did Carsound start making an OBD-II compliant cat? I heard from Carsound that it's been in the works, but is not expected any time in the near future from Carsound directly. They also weren't aware of any OBD-II compliant or CARB approved cats for OBD-II. Is yours a universal fit, or custom fit?

Also, does anyone know the flow diameter of a stock 96 GSR cat?<HR></BLOCKQUOTE>

The cat itself is completely bare. There are no flanges on either end. It's the flanges that get welded on that make it OBDII compliant. Dave adds a rear flange and installs an O2 bung right in front of it, so that you can insert the 2nd O2 sensor there. The 2nd O2 sensor needs to sit behind some cat material and in this way, it does. No CELs...wooohooo. biggrin