Catalytic converter question

Ron90Turbo · 10-02-2005, 02:32 PM

Supraholics - how long should a catalytic converter last? My 90 Turbo has 149,000 miles on the original one. How do you tell if one is bad? I only have one converter since the one just below the turbo has been removed.

supraxe · 10-02-2005, 04:26 PM

hi the supportability is different.you can make a exhaust gas test or you to upgrade your 2.kat and look inside.when the comb are free and open and nothing is broken everything okay.

mrnickleye · 10-03-2005, 07:54 AM

Mine HAD 150k on it. I still passed the Calif smog test. I replaced it when I had a custom exhaust fabricated.

If an engine is kept in good condition, and problems that come up are fixed quickly, a cat can last a very very long time.

What kills cats are:
1) physical damage (from hitting something),
2) running the car too rich a fuel mixture (burns them out),
3) oil burning engine, usually due to worn internal parts (coats the internals and so they can't function.

I run a smog shop, so I know these things.

SupraMan1784 · 10-03-2005, 12:43 PM

i replaced mine when i got my full exhaust..that was about 89k when i had my 7m, but i had to replace it anyways because the motor was running rich at the time...wasnt tuned yet...but a cat is supposed to last...dont really need to change it unless u cant pass smog...otherwise get it looked at

Ron90Turbo · 10-03-2005, 02:14 PM

Thanks for the info. I'll just leave mine alone then since I have only the basic mod and it's not running rich.

10-02-2005, 02:32 PM	#1
Ron90Turbo Stock Join Date: Sep 2005 Location: Shalimar, FL Posts: 8	Catalytic converter question Supraholics - how long should a catalytic converter last? My 90 Turbo has 149,000 miles on the original one. How do you tell if one is bad? I only have one converter since the one just below the turbo has been removed. __________________ Ron 90T Targa, K&N FIPK, catback exhaust, manual boost controller, GReddy MHG, '94 TT wheels Plus, '99 BMW M3 Conv

10-02-2005, 04:26 PM	#2
supraxe Stock Join Date: Sep 2005 Location: Germany Bremen BecKstown Posts: 22	hi the supportability is different.you can make a exhaust gas test or you to upgrade your 2.kat and look inside.when the comb are free and open and nothing is broken everything okay. __________________ German Tornado on Highway with 270 km/h His name is Supra!!!!!!!!!No speedlimit!!!!!!!!!

10-03-2005, 12:43 PM	#4
SupraMan1784 SP58GT Join Date: Jun 2005 Location: Dirty Jerz Posts: 691	i replaced mine when i got my full exhaust..that was about 89k when i had my 7m, but i had to replace it anyways because the motor was running rich at the time...wasnt tuned yet...but a cat is supposed to last...dont really need to change it unless u cant pass smog...otherwise get it looked at __________________ Now: Saving for an MKIV Broken Rides: (Sold) 91 supra turbo 5speed with a 1jzgte motor 421whp 400(399) ft*lbs of torque on tap @ 15 psi "Always outnumbered, never outgunned."

10-03-2005, 02:14 PM	#5
Ron90Turbo Stock Join Date: Sep 2005 Location: Shalimar, FL Posts: 8	Thanks for the info. I'll just leave mine alone then since I have only the basic mod and it's not running rich. __________________ Ron 90T Targa, K&N FIPK, catback exhaust, manual boost controller, GReddy MHG, '94 TT wheels Plus, '99 BMW M3 Conv

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10-03-2005, 07:54 AM	#3
mrnickleye 1000whp postwhore Join Date: Jun 2005 Location: Mojave Desert, Calif. Posts: 1,705	Mine HAD 150k on it. I still passed the Calif smog test. I replaced it when I had a custom exhaust fabricated. If an engine is kept in good condition, and problems that come up are fixed quickly, a cat can last a very very long time. What kills cats are: 1) physical damage (from hitting something), 2) running the car too rich a fuel mixture (burns them out), 3) oil burning engine, usually due to worn internal parts (coats the internals and so they can't function. I run a smog shop, so I know these things.