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    Thread: Aftermarket Catalytic Converters, Any Good??

    1. Member
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      09-10-2020 03:42 PM #1
      Had a very nice human steal the Cat off my Honda

      What are your experiences with aftermarket cats , endless check engine lights or good as OEM?????

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    3. Member burgerbob's Avatar
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      09-10-2020 03:48 PM #2
      https://gsportbygesi.com/

      I have these on 3 of my cars and have never had an issue
      "keep it between the mayonnaise and mustard"

      ford x8 (mustang x4, thunderbird, lightning, svt focus, fiesta st)
      chevy x1 (2500hd)
      vw x1 (atlas cross sport) "I bought it"

    4. Member Aw614's Avatar
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      09-10-2020 03:49 PM #3
      I've been running a magnaflow highflow cat on my oil burning honda and it still seems solid for the last 3 years, car doesn't seem choked up by it either...

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      09-10-2020 04:00 PM #4
      Quote Originally Posted by Aw614 View Post
      I've been running a magnaflow highflow cat on my oil burning honda and it still seems solid for the last 3 years, car doesn't seem choked up by it either...
      Was just looking at a magnaflow on ebay they are a bit pricey but if they work

      It doesnt come with the heatshields right???????

    6. Member Stevo12's Avatar
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      09-10-2020 04:09 PM #5
      My only experience with them is that the PO of my old '97 M3 had aftermarket cats on the car when I first went and looked at it. Apparently, they were undersized and moved too far back versus the OE cats, so they threw CEL's constantly. He installed OE cats as part of the sale (he runs a BMW shop so he had a few kicking around) and the car has performed flawlessly since. Thankfully I haven't had the misfortune of dealing with aftermarket cat replacement, but because I hate exhaust work I'm still inclined to go OE with the cats, even if they are significantly more expensive.

      If someone stole them off your car, can't you go through insurance?

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      09-10-2020 04:21 PM #6
      I've heard about the constant CELs with aftermarket converters.

      I'm cheap no full coverage

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      09-10-2020 05:30 PM #7
      I replaced the cat (part of the exhaust manifold) on my old SH Forester, and even though the new one was like $250, it worked great and actually solved my CEL (which, obviously, was a P0420 for a bad cat).

    9. Member shuttle pilot's Avatar
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      09-10-2020 09:18 PM #8
      I have a newer magnaflow on my DC2 and I have no check engine lights. I also have a magnaflow on my golf that replaced a hollowed cat and it kept the old car exhaust smell away for about 5 years before I could faintly smell it again. I say it is good for the $150 paid for it.

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      09-13-2020 11:19 PM #9
      Magnaflows in my application arent that cheap but Ive heard ntohign but good about Magnaflow cats

    11. Member burn_your_money's Avatar
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      09-15-2020 01:14 PM #10
      Aftermarket cats are worth ~$5 to a scrapper so it probably won't be stolen again

    12. Geriatric Member Air and water do mix's Avatar
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      09-15-2020 01:30 PM #11
      Quote Originally Posted by burn_your_money View Post
      Aftermarket cats are worth ~$5 to a scrapper so it probably won't be stolen again
      Do you think meth heads get under a car and think "oh, those are aftermarket. Let's move on to the next car."??

      They don't.
      Quote Originally Posted by Boyz in da Park
      Proletariat, Bourgeoise - Everybody smellin' my potpourri...

    13. Member
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      09-15-2020 03:47 PM #12
      Quote Originally Posted by burn_your_money View Post
      Aftermarket cats are worth ~$5 to a scrapper so it probably won't be stolen again
      HAHA good to know, been trying to find a used OEM cat but not legal for sale. Direct fit magnaflow is 350.00 plus my flex pipe was sawed into

      What does the Lounge think of Northeastern exhaust parts???they claim to be 409 stainless steel which hopefully last longer than the WALKER alumunized steel flex pipe i ahd for 2ish years and was starting to rust
      Last edited by ImpeccableNEW; 09-15-2020 at 03:55 PM.

    14. Geriatric Member Air and water do mix's Avatar
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      09-15-2020 03:55 PM #13
      Quote Originally Posted by ImpeccableNEW View Post
      HAHA good to know, been trying to find a used OEM cat but not legal for sale. Direct fit magnaflow is 350.00 plus my flex pipe was sawed into
      Back when the big threat was stealing car stereos the idiots would literally rip them out of the dash, sometimes doing as much as $1,000 in damage, and this was back in the '80s! They'd get a $100 stereo that they could sell for maybe $20 because it was obviously hot.
      Quote Originally Posted by Boyz in da Park
      Proletariat, Bourgeoise - Everybody smellin' my potpourri...

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      09-15-2020 03:58 PM #14
      Quote Originally Posted by Air and water do mix View Post
      Back when the big threat was stealing car stereos the idiots would literally rip them out of the dash, sometimes doing as much as $1,000 in damage, and this was back in the '80s! They'd get a $100 stereo that they could sell for maybe $20 because it was obviously hot.
      I remember those days all cars had a NO RADIO sign they would tape on the window.

      I believe thats why radio codes came about

    16. Geriatric Member Air and water do mix's Avatar
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      09-15-2020 04:03 PM #15
      Quote Originally Posted by ImpeccableNEW View Post
      I remember those days all cars had a NO RADIO sign they would tape on the window.

      I believe thats why radio codes came about
      That's absolutely why radio codes came out. Those and removable face plates/slide-in stereos were all designed to combat that. What really killed the market was better factory stereos so generic-fit aftermarket ones were no longer much of a draw.

      Unfortunately there's no losing cats unless you're talking electric cars. Perhaps they could armor them with removable bolt-in bits to make them harder to remove in a parking lot, but I'd say there's little else they could do to protect them, and that's unlikely unless the public starts clamoring for something like that, but that isn't going to happen.
      Quote Originally Posted by Boyz in da Park
      Proletariat, Bourgeoise - Everybody smellin' my potpourri...

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      09-15-2020 04:21 PM #16
      Quote Originally Posted by Air and water do mix View Post
      That's absolutely why radio codes came out. Those and removable face plates/slide-in stereos were all designed to combat that. What really killed the market was better factory stereos so generic-fit aftermarket ones were no longer much of a draw.

      Unfortunately there's no losing cats unless you're talking electric cars. Perhaps they could armor them with removable bolt-in bits to make them harder to remove in a parking lot, but I'd say there's little else they could do to protect them, and that's unlikely unless the public starts clamoring for something like that, but that isn't going to happen.
      I think 1980s era theft is taking place due to police being afraid to be proactive, a symptom of the defund the police movement.

    18. Member retro_rocket's Avatar
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      09-15-2020 04:25 PM #17
      I had one of these on my MX-6: https://www.carid.com/ap-exhaust-tec...pn-608715.html

      It was fine, no CELs.
      Current: 2016 Mazda 6 Grand Touring
      Departed: 2008 Mazda 3 | 1997 Mazda MX-6 LS V6 | 1996 Ford Probe | 1986 Ford Mustang GT | 1983 VW GTI

    19. Member 4.OMG's Avatar
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      09-15-2020 04:36 PM #18
      Quote Originally Posted by ImpeccableNEW View Post
      I think 1980s era theft is taking place due to police being afraid to be proactive, a symptom of the defund the police movement.
      People will steal anything that's not bolted down if it's worth even the tiniest amount of money, and always have. Back in 2008-09 people were breaking into old houses in bad neighborhoods in Detroit to steal copper wiring and plumbing right out of the walls, including from houses people were living in. This is a good way to get shot, so the threat of merely getting caught and arrested isn't enough to deter the average tweaker out stealing cats to fund his crystal habit.
      Now this was a superior machine. Ten grand worth of gimmicks and high-priced special effects. The rear windows lit up with a touch like frogs in a dynamite pond. The dashboard was full of esoteric lights and dials and meters that I would never understand.

    20. Member elite.mafia's Avatar
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      09-15-2020 04:42 PM #19
      I've had a few bosal exhausts and had no issues.
      2zz-ge 6mt trying to rev to mars

    21. Member
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      09-15-2020 04:45 PM #20
      Quote Originally Posted by 4.OMG View Post
      People will steal anything that's not bolted down if it's worth even the tiniest amount of money, and always have. Back in 2008-09 people were breaking into old houses in bad neighborhoods in Detroit to steal copper wiring and plumbing right out of the walls, including from houses people were living in. This is a good way to get shot, so the threat of merely getting caught and arrested isn't enough to deter the average tweaker out stealing cats to fund his crystal habit.
      But my cat was bolted downEver since June when the police was defunded by 1 billion I've started to see broken windows frequently, it was parked in a well lit area in a good neighborhood .

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      09-15-2020 04:46 PM #21
      Quote Originally Posted by elite.mafia View Post
      I've had a few bosal exhausts and had no issues.
      Hmmm Bosal cat is a bit cheaper but is aluminized steel

    23. Member shuttle pilot's Avatar
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      09-15-2020 10:28 PM #22
      409 SS is okay, it rusts but it will take 10 years for it to fall off.

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      09-16-2020 03:07 PM #23
      Quote Originally Posted by shuttle pilot View Post
      409 SS is okay, it rusts but it will take 10 years for it to fall off.
      10 years sounds better than Aluminized steel 2 years

    25. Member Karl O.'s Avatar
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      09-16-2020 03:24 PM #24
      Quote Originally Posted by 4.OMG View Post
      Back in 2008-09 people were breaking into old houses in bad neighborhoods in Detroit
      It wasn't just Detroit.

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