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Old 03-12-2013, 01:46 AM
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Icon2 Need Cat recommendations

Well I have a 98 honda prelude and the catalytic converter started baffling a while back and I'm sure it's still the same one it rolled out with in 98 so time for a new one. Was thinking about a magnaflow hi flow cat or something of that nature but I'm not really sure
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Old 03-12-2013, 01:48 AM
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Re: Need Cat recommendations

And also would it be smart to change all the pipes past the cat now too since they run the risk of probably having some of the pieces of honeycomb inside of them
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Old 03-12-2013, 02:13 AM
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Re: Need Cat recommendations

Magnaflow! Not uber expensive and very high quality. My brother just got one in the mail for his S/C Tuscani build and it is very nice. Sturdy, thick, but not heavy. Get one.

Also don't worry about chaning the piping, unless you want to upgrade, then by all means go for it. Get a shop to rig you up some 2.5' piping for $100 and buy a new muffler. You'll get some gains, it will sound better, and you will run cleaner with the new cat ;)
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Old 03-12-2013, 02:23 AM
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Re: Need Cat recommendations

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Originally Posted by Garurumon View Post
Magnaflow! Not uber expensive and very high quality. My brother just got one in the mail for his S/C Tuscani build and it is very nice. Sturdy, thick, but not heavy. Get one.

Also don't worry about chaning the piping, unless you want to upgrade, then by all means go for it. Get a shop to rig you up some 2.5' piping for $100 and buy a new muffler. You'll get some gains, it will sound better, and you will run cleaner with the new cat ;)
I was actually planning on buying a magnaflow 14805 muffler too but don't want it to be loud so I was more in the lines of 2.25 inch piping and a resonator to keep it sounding in low rpms.
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Old 03-12-2013, 02:25 AM
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Re: Need Cat recommendations

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I was actually planning on buying a magnaflow 14805 muffler too but don't want it to be loud so I was more in the lines of 2.25 inch piping and a resonator to keep it sounding in low rpms.
Yeah or do that, a nice 17" resonator will cut off a lot of noise. Cabin drone mostly...

When I do exhaust I want to be as deep and loud and obnoxious as possible without riceyness... But that's just me I guess.
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Old 03-12-2013, 02:35 AM
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Re: Need Cat recommendations

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Originally Posted by Garurumon View Post
Yeah or do that, a nice 17" resonator will cut off a lot of noise. Cabin drone mostly...

When I do exhaust I want to be as deep and loud and obnoxious as possible without riceyness... But that's just me I guess.
Yea I guess I want mines as close to stock in quietness and a different tone in higher rpms
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Old 03-12-2013, 03:39 AM
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Re: Need Cat recommendations

I have personal experience with magnaflow and catco, both of them are good

some people use vibrant, and they make quality products so I think theyre ok as well
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Old 03-12-2013, 09:36 AM
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Re: Need Cat recommendations

Vibrant and Magnaflow both get the nod in my book. A Magnaflow cat has never let me down.
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Old 03-12-2013, 09:43 AM
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Re: Need Cat recommendations

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Originally Posted by k3v0kurd View Post
I was actually planning on buying a magnaflow 14805 muffler too but don't want it to be loud so I was more in the lines of 2.25 inch piping and a resonator to keep it sounding in low rpms.
My 2.5" setup was too loud/obnoxious for me in the low RPMs. I almost went back to stock, but once I switched the 18" Vibrant resonator with a 26" Magnaflow one..... wow. Never been happier. And yeah, the magnaflow hi flow cats would be a good choice.
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Old 03-12-2013, 10:15 AM
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Re: Need Cat recommendations

Need cat recommendations: I like orange ones with stripes. I have 2, ones name is Humphrey, and the other is Truman. They like treats.
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Old 03-12-2013, 05:08 PM
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Re: Need Cat recommendations

I recommend Magnaflow. I just put on the 46034 and it sounds great, but I live in cali so you should get the high flow one
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Old 03-12-2013, 11:05 PM
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Re: Need Cat recommendations

SMSP custom catalytic converter
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Old 03-13-2013, 12:49 AM
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Re: Need Cat recommendations

I run a vibrant and ive got no complaints. Cheaper then magnaflow also. Its funny to me that u guys say ur 2.25 setup is too loud. I run a full 3" setup with no resonator and its not that bad at all lol
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Old 03-13-2013, 01:01 AM
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Re: Need Cat recommendations

i remember super street did an article on cat, high flow, and gutted cat. They first dyno'd a civic with a cat as the baseline, then they did a gutted cat and it ran -1Hp from baseline, and they ran a magnaflow hp cat and it gained 1hp from baseline. not much but it put the gutted cat myth to rest lol
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Old 03-13-2013, 01:13 AM
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Re: Need Cat recommendations

Cats are pretty awesome I must say.
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Old 03-13-2013, 01:37 AM
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Re: Need Cat recommendations

i like kitten mittenz
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Old 03-13-2013, 11:26 AM
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Re: Need Cat recommendations



This cat also keeps your car from getting stolen. Can remember which company makes it. A little help??





















MITTENZ STOP STEALIN MAH HORSEPOWUH
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Old 03-13-2013, 02:58 PM
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Re: Need Cat recommendations

st00pid mittenz you only haz 1 lyf lef
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Old 03-13-2013, 10:06 PM
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Re: Need Cat recommendations

magnaflow hi flow, but cats are supposed to be guarenteed for life, unless of course theres a problem with something else.


hopefully you understand my message there........
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Old 03-13-2013, 10:29 PM
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Re: Need Cat recommendations

I had a magnaflow cat put on back in August of 2010 - they don't make a direct fit for the 4g so I'm using the universal part 53004 which needs flanges welded on. Now it's got a nickle sized hole rusted through around the rear tapered end. I just got a replacement on Monday under the 5yr warranty but they don't cover the labor of adding flanges to the ends or the install of the new part, which costs more than the part itself. I'm pretty surprised that it's already rusting, and not around a weld either, it's rusting out through the metal body. I'm hoping the replacement part will last longer. Just my 2 cents of experience with the brand. If you get one, Amazon has good prices and an easy return policy.
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Old 03-23-2013, 03:27 AM
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Re: Need Cat recommendations

Just picked up a Magnaflow universal hi-flo cat to go with my new header. I've heard only good things about Magnaflow. Mine is EPA and CARB certified for OBDI and OBDII. I read Vibrant cats are only OBDI compatible so I passed on those.
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Old 03-23-2013, 04:42 AM
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Re: Need Cat recommendations

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Originally Posted by Dragonium25 View Post
I read Vibrant cats are only OBDI compatible so I passed on those.
every aftermarket cat is universal. maybe you need to weld plug for o2 sensor for some of them.. I cannot think any other reason why some cat would be just for obd1 or 2
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Old 03-23-2013, 05:55 AM
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Re: Need Cat recommendations

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every aftermarket cat is universal. maybe you need to weld plug for o2 sensor for some of them..
Not really, Magnaflow makes direct fit cats specific to some vehicles. Go to their website and enter your vehicle info and they'll tell you which model is made for your car. But if you have an aftermarket/custom exhaust set up, then you'll need to find the proper universal fit cat for your application. With your rationale though, you could say any exhaust system can fit any vehicle with some "creative" fab work

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I cannot think any other reason why some cat would be just for obd1 or 2
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Old 03-23-2013, 09:28 AM
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Re: Need Cat recommendations

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Originally Posted by Dragonium25 View Post
With your rationale though, you could say any exhaust system can fit any vehicle with some "creative" fab work
but its true: it just doesnt matter.

exept if you have stricter emissions with obd2 it might make some difference if your cat is 100-cel one, but 200-300 cel hi flow ones work ok with both. and every aftermarket exhausts are 60mm so again - no difference what obd your car is. you can run same exhausts with obd1 and obd2. cmon its just piping!

I got clear smogs here with my setup before and after I did obd1 swap!
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Old 03-23-2013, 02:22 PM
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Re: Need Cat recommendations

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but its true: it just doesnt matter.

exept if you have stricter emissions with obd2 it might make some difference if your cat is 100-cel one, but 200-300 cel hi flow ones work ok with both. and every aftermarket exhausts are 60mm so again - no difference what obd your car is. you can run same exhausts with obd1 and obd2. cmon its just piping!

I got clear smogs here with my setup before and after I did obd1 swap!
It does matter. The whole point of a cat (hi-flow or not) is to pass emissions, and different places have different standards. So you can't say any universal cat will work, regardless OBDI or II, because that's incorrect information. You have to have the proper cat for your application and your emissions restrictions. If the manufacturing company itself says their cat only works on OBDI, I'm gonna take their word for it.

Can you elaborate on what you mean by 'every aftermarket exhausts are 60mm'?

OP, don't know where you're located and what you emissions are, just make sure you get the proper cat for your exhaust set up.
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Old 03-24-2013, 07:21 AM
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Re: Need Cat recommendations

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Originally Posted by Dragonium25 View Post
It does matter. The whole point of a cat (hi-flow or not) is to pass emissions, and different places have different standards.
if there is no laws that you have to use car specific parts any cat will do

like I said: the only reason could be if the cat is for racing purposes and those are usually 100 cel ones, but here people have passed emissions with those too! cat is not the only thing which effect on those emissions

really there has to be something wrong with your car if you cannot pass emissions with hi flow cat. I have done it with both obd's and when your engine is healthy there is no problems at all.

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Can you elaborate on what you mean by 'every aftermarket exhausts are 60mm'?
they advertise that theyre "2,5" but actually theyre 60mm/2,36"
havent yet seen any true 2,5" exhausts, which is 63,5mm

they just tell the outlet, the inlet is much smaller which gives you the wrong information. thats just pure customer misleading
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Old 03-24-2013, 08:21 AM
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Re: Need Cat recommendations

Maybe 2.36 i.d.? 2.5 o.d.? That is misleading.

When speaking of pipes for water/sewer 2.5 is i.d.
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Old 03-25-2013, 01:15 AM
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Re: Need Cat recommendations

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Originally Posted by TypeT View Post
if there is no laws that you have to use car specific parts any cat will do

like I said: the only reason could be if the cat is for racing purposes and those are usually 100 cel ones, but here people have passed emissions with those too! cat is not the only thing which effect on those emissions
And by 'here' do you mean Finland? You're basing everything on your standards. We're talking about emissions in North America, which differs in Canada, the US, and Mexico. Even then standards are different from state-to-state, province-to-province. Your car might pass emissions in one place, then you drive across the border (or state line, next province, etc) and the exact same car could just as well fail emissions there. So whatever happens over where you're at really has no relevance across the pond .

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really there has to be something wrong with your car if you cannot pass emissions with hi flow cat. I have done it with both obd's and when your engine is healthy there is no problems at all.
Again this is your set up, for your car, in your country. Who knows what the OP has and what condition his car is in. So you can't just tell him, "Yeah get any old universal cat, they're all the same, you'll have no problems."
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