Performance Forced induction, intakes, exhausts, torque converters, transmissions, etc.

Bad cat = screwed! ;(...but their is a silver lining in this!

Thread Tools
 
Search this Thread
 
Old 03-25-10, 11:54 AM
  #1  
Rock-a-Lex
Lead Lap
Thread Starter
iTrader: (4)
 
Rock-a-Lex's Avatar
 
Join Date: Jan 2007
Location: NY
Posts: 4,519
Received 17 Likes on 16 Posts
Default Bad cat = screwed! ;(...but their is a silver lining in this!

Well, I dropped my car off at my local shop a couple of days ago for an oil change and diff fluid change. I supplied Royal Purple for both. I also, mentioned to them that I had a CEL code spring up on me about 2 months ago and it went off about 2 weeks ago...but I had a funny feeling it was still running in the ECU; so I asked them to check on it. It is a PO430 code - catalyst inefficiency. I had this SAME code pop up last year and changed all my O2 sensors because of it; it DID satisfy the problem but obviously temporarily.

So, now my shop says that eventhough they are finding the right front cat to be the culprit they want to replace both of them because they feel that the front left cat could be on it's way as well. In order for them to perform this service and warranty all they want to replace both...to the tune of $1100 EACH! Plus a couple of hour of labor; so, I am looking at a $2500 bill.

Then, I call Carson Toyota/Lexus...they can get the parts for around $860 each...a good amount of savings but my shop said that they are against installing and warrantying parts that they do not order directly. So, this may be out...unless I can "ask" them to order the OEM cats directly from Carson Toyota/Lexus.

I HAD NO IDEA that a broken/blocked cat can cause transmission problems as well! They told me this and then I researched it; it holds true. The backpressure gets so messed up that it effects the shifting of the tranny which can lead to failure. Plus, not to mention that with a blown cat you get BAD gas mileage (which I am getting).

Silver lining = better gas mileage, assured that my tranny won't F-up because of it and perhaps better performance.

Are there any suggestions or different routes that you guys can recommend?
Old 03-25-10, 12:00 PM
  #2  
ac921ol
Lead Lap
iTrader: (1)
 
ac921ol's Avatar
 
Join Date: Mar 2010
Location: VA
Posts: 638
Likes: 0
Received 2 Likes on 2 Posts
Default

the cats on your aftermarket exhaust are already going?? is that what im understanding here...
looks like you also have S&S headers, so are they going in them, if so id contact them and talk to them.
Old 03-25-10, 12:03 PM
  #3  
TLcoats
Lexus Test Driver
iTrader: (11)
 
TLcoats's Avatar
 
Join Date: Dec 2009
Location: CA
Posts: 1,457
Likes: 0
Received 1 Like on 1 Post
Default

Hey rock, I suggest searching around for different shops. That's really expensive, also look at buying som aftermarket high flow cats, better performance and cheaper. Good luck!
Old 03-25-10, 12:04 PM
  #4  
TLcoats
Lexus Test Driver
iTrader: (11)
 
TLcoats's Avatar
 
Join Date: Dec 2009
Location: CA
Posts: 1,457
Likes: 0
Received 1 Like on 1 Post
Default

Originally Posted by ac921ol
the cats on your aftermarket exhaust are already going?? is that what im understanding here...
looks like you also have S&S headers, so are they going in them, if so id contact them and talk to them.
There are no cats in s&s aftermarket headers.
Old 03-25-10, 12:13 PM
  #5  
ac921ol
Lead Lap
iTrader: (1)
 
ac921ol's Avatar
 
Join Date: Mar 2010
Location: VA
Posts: 638
Likes: 0
Received 2 Likes on 2 Posts
Default

Originally Posted by TLcoats
There are no cats in s&s aftermarket headers.
so then its his exhaust, id 100% after high flow cats, and get them welded in. call it a done deal, ive done this to a few of my cars.

and def shop around, like posted up above.
Old 03-25-10, 12:14 PM
  #6  
GS4_Fiend
Lexus Test Driver
iTrader: (22)
 
GS4_Fiend's Avatar
 
Join Date: Aug 2008
Location: CA
Posts: 7,050
Received 104 Likes on 82 Posts
Default

If your cats are plugged then it's time to replace them. I think Magnaflow company might have them if not then you might have to go with oem. Gl.
Old 03-25-10, 12:16 PM
  #7  
Rock-a-Lex
Lead Lap
Thread Starter
iTrader: (4)
 
Rock-a-Lex's Avatar
 
Join Date: Jan 2007
Location: NY
Posts: 4,519
Received 17 Likes on 16 Posts
Default

Originally Posted by ac921ol
the cats on your aftermarket exhaust are already going?? is that what im understanding here...
looks like you also have S&S headers, so are they going in them, if so id contact them and talk to them.
There are NO cats inside the S&S headers!...and my Borla Exhaust is a rear section only. Even if it was a full exhaust, exhaust systems NEVER come with cats iirc.
Old 03-25-10, 12:19 PM
  #8  
Rock-a-Lex
Lead Lap
Thread Starter
iTrader: (4)
 
Rock-a-Lex's Avatar
 
Join Date: Jan 2007
Location: NY
Posts: 4,519
Received 17 Likes on 16 Posts
Default

The thing is I read up on and spoke to some (experienced) CL members here such as Jbrady and I recall him mentioning that more often than none, the OEM cats are almost ALWAYS higher flowing units than the so-called "high performance" hi-flo AFTERMARKET cats. Plus, there is NO guarantee that the codes will be cleared when an aftermarket cat is installed...then I would need to install an oem anyways.
Old 03-25-10, 12:26 PM
  #9  
porn-adkt
Lexus Champion
iTrader: (37)
 
porn-adkt's Avatar
 
Join Date: Apr 2009
Location: Westchester, NY
Posts: 2,210
Received 11 Likes on 11 Posts
Default

Originally Posted by Rock-a-Lex
The thing is I read up on and spoke to some (experienced) CL members here such as Jbrady and I recall him mentioning that more often than none, the OEM cats are almost ALWAYS higher flowing units than the so-called "high performance" hi-flo AFTERMARKET cats. Plus, there is NO guarantee that the codes will be cleared when an aftermarket cat is installed...then I would need to install an oem anyways.
Hmmm.. is there such thing as an o2 fooler, like the GS300 where you can fool the 02s to read always normal when going with NA-T swaps and such.
Old 03-25-10, 12:51 PM
  #10  
Infamous 1
Lexus Champion
iTrader: (20)
 
Infamous 1's Avatar
 
Join Date: Aug 2008
Location: VA
Posts: 3,476
Likes: 0
Received 2 Likes on 2 Posts
Default

A member posted this sometime ago. It might be a good option.

http://www.converterwarehouse.com/ca...=8&Model=GS400
Old 03-25-10, 12:54 PM
  #11  
Ay-nako
Stop the Copy!
iTrader: (25)
 
Ay-nako's Avatar
 
Join Date: Jul 2005
Location: NV
Posts: 4,857
Received 112 Likes on 52 Posts
Default

Originally Posted by ****-adkt
Hmmm.. is there such thing as an o2 fooler, like the GS300 where you can fool the 02s to read always normal when going with NA-T swaps and such.
there is, id invest in that!! there not expensive at all ive got one in my GS, i think it was maybe $60?
Old 03-25-10, 01:02 PM
  #12  
SPRTNYDSN
Lexus Test Driver
iTrader: (2)
 
SPRTNYDSN's Avatar
 
Join Date: Dec 2009
Location: NY
Posts: 849
Likes: 0
Received 3 Likes on 3 Posts
Default

Originally Posted by Ay-nako
there is, id invest in that!! there not expensive at all ive got one in my GS, i think it was maybe $60?
Probably referring to O2 simulator, I had it on the maxima. It cost me about 80 bucks. I was able to pass inspection with it.
Old 03-25-10, 01:29 PM
  #13  
Rock-a-Lex
Lead Lap
Thread Starter
iTrader: (4)
 
Rock-a-Lex's Avatar
 
Join Date: Jan 2007
Location: NY
Posts: 4,519
Received 17 Likes on 16 Posts
Default

^ yeah, but aren't those simulators for O2 sensors only? I don't know if they make a "catalytic converter simulator" lol.
Old 03-25-10, 01:41 PM
  #14  
SPRTNYDSN
Lexus Test Driver
iTrader: (2)
 
SPRTNYDSN's Avatar
 
Join Date: Dec 2009
Location: NY
Posts: 849
Likes: 0
Received 3 Likes on 3 Posts
Default

honestly..don't know, not a mechanic but after the install of my SS headers my CEL came on.
Old 03-25-10, 10:21 PM
  #15  
5t341th
Lexus Champion
iTrader: (16)
 
5t341th's Avatar
 
Join Date: Aug 2008
Location: SoCal (Huntington Beach)
Posts: 2,691
Received 12 Likes on 11 Posts
Default

i have this code as well. i am going to replace all my o2's first though


Quick Reply: Bad cat = screwed! ;(...but their is a silver lining in this!



All times are GMT -7. The time now is 11:17 PM.