modmic2000

I'm reading that a hi flow cat doesn't produce much except for F/I, true? Will a regular cat for around 100$(like from Jc Whitney) work as well as the oem cat. I know you all hate the same ole ques.'s but why does everyone buy hi flow if they aren't needed.

Fast&furiuslude

My hi-flow cat gave me some nice gains, but thats from a butt dyno so...

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-Lewis-

Si Prelude with H22 swap
i/e/hi-flow cat/clutch/motor mounts/thermo coolent mod

slp mode

In my opinion our cars need every little bit that you can squeeze, so if a high flow cat only gives you maybe 3 horses, and it's only 100 bucks, I say go for it. I am all for cheap small Hp gains, the power will add up little by little. Also who knows, when you upgrade something it most likely will compliment something else you already have so you might get a little more than you would expect. I know I will be getting a high flow cat, when I get my exhaust.

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04 Ford Powestroke Diesel Crew Cab, Shortbed,4x4, SCT Tuner,with Tunes from innovative Diesel,4 inch Donahoe lift,ARP headstuds,AFE Stage 2 intake,MBRP 4 inch Exhaust,4:30 gears from unitrax,18 inch KMC wheels(black) with 35 inch Toyo M/T's.
440 whp 800 torque.

brendon2k

A lot of people go with a high flow cat do to the price of a OEM honda Cat.

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-Brendon-
09 - Subaru Impreza
07 - Honda CBR 600RR

SLICK96

Hey, here's to EVERYBODY... try SEARCHING this. "High" flow cats net you almost NOTHING in terms of hp gains, unless you are going FI. I hate to be a d!ck, but you REALLY need to do some research into this area. High flow cats, w/ molt-on mods will net you no extra hp.

J

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Jason (AIM-->JDMSLICK96, or MSN IM-->JDMSLICK96)... For SALE: Recaro SRD Limited Edition seats, VTEC sub enclosure w/ Kicker 6x9 Free Air subwoofer (& free amp). PM w/ offers. Rest In Eternal Peace, Capt Derek Argel, Capt Jeremy Fresques, Pfc Chris Hill, & Sgt John House (all lost to Iraqi conflict).

Anybody want to buy my Lude? (Will sell in either stock or fairly modded trim).

slp mode

How can that be? I had a dyno tune with no cat and exhaust, and before my vafc tune I was at 181, and when I put it them back on and dynoed it dropped to I think 175, it was around there, but I guess maybe it was just all from my exhaust being off.

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04 Ford Powestroke Diesel Crew Cab, Shortbed,4x4, SCT Tuner,with Tunes from innovative Diesel,4 inch Donahoe lift,ARP headstuds,AFE Stage 2 intake,MBRP 4 inch Exhaust,4:30 gears from unitrax,18 inch KMC wheels(black) with 35 inch Toyo M/T's.
440 whp 800 torque.

modmic2000

Ok, but how about a cat say from JcWhitney.com that is not hi-flow? I just need a new cat and I want whatever would be sufficient or equal to the oem cat.

AccordSleeper

I bought a Carsound cat for under $100 only cause my cat was old and needed to get messed with to fit the H22 header. I'm sure it helps a tad on topend, after you have I/H/E and have an old cat.

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95AccordEX+JDMH22=Sleeper

For Sale:
Black MSW rims 15x6 4x114.3 bolt pattern, pick up only $100
Great for snow tires

LoudLude

Like someone mentioned, this has been discussed quite a few times, but since it is here now, I am going to give my input.

Replacing your stock cat after 2 miles will probably yield an insignificant gain in power. Furthermore, replacing your stock cat with a knock-off brand (JCWhitney) would most likely end up robbing Hp.

However, after a significant ammount of mileage, catalytic converters *can* become clogged and inefficient. In this case most any new cat would be an improvement.

To the original question- sorry, I dont know. I dont know the difference in the internals of the cats.. However from my experience with JC Whitney, I would not purchase something from them that I count on lasting a while. If I was in your situation I would probably try to find a stock cat from a wrecked car with low miles. Which may be a task in itself