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-   Exhaust Tech (https://www.newagegto.com/forums/forumdisplay.php?f=33)
-   -   cats (https://www.newagegto.com/forums/showthread.php?t=7633)

NEXSTAR7 08-22-2008 06:14 PM

cats
 
i had headers and high flow cat installed 2 years ago. not going to mention who's. what would make the cats fail so fast after 2 yrs? i put in some local muffler shop high flow cats and 3 months later one went out. could it be the tune?

scot254 08-22-2008 09:00 PM

If you're way too rich they'll fail sooner. I have a predator (only used for scanning now) and have never been a fan. Dyno tune or wideband and HP tuners is the way to go. Have you ever had your AFR monitored?

NEXSTAR7 08-24-2008 06:36 AM

no never did. i guess i have to splurge again. thanks

fastcop 08-31-2008 03:09 PM

I had my right cat fail on me a little after my first year of ownership, had to turn it back over to the dealership for a few. I was never offered an explanation... was just glad it was covered under warranty.

NEXSTAR7 09-01-2008 03:49 PM

im looking for a good tuner in new york that does tuning on weekends. i'lll get her tuned then take out the cats and then replace them with high flow cats.thanks guys

scot254 09-02-2008 09:31 AM

You want to replace the cats first then get it tuned. Random Techs aren't that expensive and what many people run.

NEXSTAR7 09-10-2008 05:53 PM

do you think the cut outs are affecting it also? i would hate to take them out. also can the car be tuned for when im running the car normal and then with the cut outs open?

scot254 09-11-2008 12:58 AM

The tune will be made for the cutouts closed, but it'll will work either way on the steet, you can open them up. You just want the new cats because they will be putting a sniffer in your exhaust pipe and they'll be able to calibrate the AFR for a car with cats and get a static reading. If you open the cutouts after you should have near the same AFR on the motor, but be spitting out more fuel before the cats.

NEXSTAR7 09-15-2008 06:40 PM

thanks scot254. you helped alot. i'll you know how it goes. im trying to get a tuner for the weekend but there hard to come by.

NEXSTAR7 09-25-2008 05:59 PM

well i got the slp high flow cats and got he car tuned. he said it was running a little rich. he did a couple of pulls and got 352.84. after a coulple adjustments he got at the end of the dyno 366.34 on power and 366.94 on torque. is that good for the mods i have? thanks again for the help. also the with the cutouts open i got 368 hp. he said i could do mid 12's. i think thats a little to much. what do you think?

JohnGollihom 04-29-2020 02:54 PM

ty
 
I love cats so much

HarryPickford 04-23-2021 10:36 AM

Thanks all for your replies.

CharlotteHoffman 08-24-2021 03:51 PM

My wife introduced me to cats
I have been a pet snob but now I cant let my eyes of our cat haha

Onlinepromo 09-30-2021 08:54 AM

Nice topic about cats, thanks


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