Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB

Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB (https://www.ft86club.com/forums/index.php)
-   Engine, Exhaust, Transmission (https://www.ft86club.com/forums/forumdisplay.php?f=8)
-   -   melting stock cats? (https://www.ft86club.com/forums/showthread.php?t=76268)

Roadcone 10-20-2014 04:51 PM

melting stock cats?
 
Do the stock cats have a tendency to melt under extreme use I've never really seen anything about it but the last two cars i had were bad about wiping out cats in track conditions.

CSG David 10-20-2014 05:30 PM

Quote:

Originally Posted by Roadcone (Post 1991169)
Do the stock cats have a tendency to melt under extreme use I've never really seen anything about it but the last two cars i had were bad about wiping out cats in track conditions.

It should not on new OEM stock tunes (before the reflashes and changes, we were the first to blow out cats on completely stock everything). We have clients with tuned setups melt cats but the logs revealed that the tuning parameters were the ones to blame. Proper tuning should not melt cats. :thumbsup:

Roadcone 10-21-2014 10:07 AM

well, there goes one reason to justify a catless header to myself... i guess because racecar is now the reason...

Model Citizen 10-21-2014 10:30 AM

http://i3.photobucket.com/albums/y63...ps3nu1osdt.jpg

hi

in fairness the car is boosted and probably was running a bit rich.


<40k miles, 7 track days, 200+ autox runs.

CSG David 10-21-2014 10:16 PM

Quote:

Originally Posted by Roadcone (Post 1992112)
well, there goes one reason to justify a catless header to myself... i guess because racecar is now the reason...

I recommend catless setups if you're planning to track. For one, you don't have to worry about replacing expensive factory cats you blew out just before smogging your car. All you need to do is just bolt the factory cats back on and boom, you're ready to go.

Roadcone 10-28-2014 02:37 PM

smogging? inspection? these things dont happen in race car country south carolina :)

seriously, we have cars running around with 88 and 91mm turbos with thru the fender exhaust on the street here lol


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