As compared to stock cats? GTM bases their kit on using stock cats, I just happened to already have had HFC's before hand and didn't want to swap back. I would assume that the failure that you speak of would be due to the SC'd motor running a rich mixture and dumping additional unburnt fuel down the exhaust to react in the cats and higher EGT's from the elevated hp levels..melting them over time. I would imagine the HFC would resist this over the stock piece due to less restriction and possibly due to the metallic core material it is made of.
If there are any GTM systems out there that are running HFC's and have had failures due to the SC system, I'd like to hear about them...

 

yeah, i know. i'm just hearing what others had posted about it and not saying that it will melt or fail. i sure hope not since most more than likely i will be running my stock cat's.

 

By the time they fail, you'll be onto a new setup (or car) anyway!

 

Does Berk make high flow cats for factory turbocharged cars? Perhaps their cats are more durable than Stillens? On a related note, anyone with an SC or TT Z/G have an EGT gauge to see what kind of exhaust temps we're dealing with here?

 

Shumby has one!

 

Berk does make HFC for the Evos.

 

OK folks, I am dropping her off at MAC tomorrow to start the install. I can't stay long tomorrow morning but I will try to take some pictures of the shop. This will be my last post to this thread. I will start a new one after this. Wish me luck and Wei, I hope your new install turns out great, keep us posted.

 

hey! Good Luck on your build! mines is next week and you know for sure that a new GTM vs Stillen thread will pop up soon!

AK locked up my thread for some reason LOL.

 

Good luck! Keep us posted. I hope it all goes great.

 

Goodluck ! And I hope you reach your power goal !

 

Good luck OP... looking forward to your built/review. Come join us in this thread from time to time to talk some BS! lol. GL.
Yeah, I can't believe AK locked your **** up on 370... That whack... You're gonna have to make another thread with your comparison between your Stillen & GTM kits.. Hopefully they won't shut you down over there. And GL next week at GTM! hit me up if you're gonna be chillin there and I'll try and make the trip if I'm not at school or work!

 

Good luck man!!!