I’ve used both the 110mm and 120mm off and on. Just lots of power, heat, and load. I also broke the input trying to go into an OD gear going wot so I think that was the achilles heel, but it can happen at any time.
I'm catless now. I'd say any boost level you are risking overheating them.
I think it really depends more on how you drive it. If you are constantly flogging it, with long WOT pulls, and certainly drag or road racing you will melt them. If you are just doing occasional rips on a back road or short pulls on a highway but otherwise just driving normal, the cats will probably last quite a while
Yes, it’s taking it to the dragstrip once or twice a year. Occasional polls here and there otherwise just normal driving on the highway. I don’t beat on the car.
650rwhp and 530ftlbs
anyone else seeing over 500ftlbs on 93 pump gas?
Stock cats seem to be best from what i hear. Green cats are great but also only last a few years. Anything else i hear they melt and fail often, sometimes even take motors with them.
I am 93 pump now on a 120 mm pulley. I plan on getting a fuel system and doing E probably gonna be pushing close to 800-850 maybe a 110 mm may be a 105 mm just debating long tubes catless long tubes with cats or cat deletes
All of my details are in my signature
I don’t want the car any louder than it is. That is the main reason I don’t want to do long tubes, but I might at least do a cat delete.
Long tubes catless vs cat deletes are only a minimal difference. If you want to stay at a catback level, no option involving headers stock or upgraded is for you. I didnt want an explosive exhaust, so i have catless kooks 1 7/8” going to a borla touring, was very tame, this might work nice for you. Still loud, but very tame. I have since replaced the resonated h pipe for an x pipe and am very happy, its loud as hell, but its also not hear me 3 states down super crazy loud
Stock cats are proven to last the longest against any aftermarket cat, except for green cats which i believe cost 2000$, plus headers. hard to say if the price is worth the product. Im not sure gow good gt500 cats are, but its moreso about the cat protection protocol that is a deciding factor, as it pulls alot of power for cooling after for some people even one full gear, as in 3rd is fine and then by the time you get to 4th it is reducing power by adding fueling for cooling exhaust temps. If youre catless like me, ya just never deal with any reductions except for knocking
I believe mid to upper 700s is a good target. I was told by my tuner that on my manual I’d be upper 700s potentially low 800s on a happy Dyno.