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oldman · 02-14-2020, 05:45 PM

I ran the standard Kooks cats on my car, many hard runs through the gears never had any issues, the TS cats look similar. IMO, the guys that are running rich mixtures of meth / eth which can go as low as 5:1 A/F max rich power are injecting a whole lot more thermal heat load into the exhaust than what you are doing. i.e. the ultrarich mixtures that can be run are not completely burnt and the combustion continues on the cat substrate (which it was designed for) and that just means it gonna get heck of hot heck of fast.

02-14-2020, 05:45 PM	#2
oldman Drives: SS 6 speed of course Join Date: Jan 2016 Location: Hilo, HI Posts: 4,346	I ran the standard Kooks cats on my car, many hard runs through the gears never had any issues, the TS cats look similar. IMO, the guys that are running rich mixtures of meth / eth which can go as low as 5:1 A/F max rich power are injecting a whole lot more thermal heat load into the exhaust than what you are doing. i.e. the ultrarich mixtures that can be run are not completely burnt and the combustion continues on the cat substrate (which it was designed for) and that just means it gonna get heck of hot heck of fast. __________________ Forged short block, large duration sub .600 lift Cam Motion cam, 7200 RPM fuel cut, Pray Ported Heads, 3.85 pulley D1X, stage II intercooler, DSX secondary low side, DSX E85 sensor, Lingenfelter big bore 2.0 pump, ported front cats, 60608 Borla, LT4 injectors, ZL1 1LE driveshaft and Katech ported TB, ported MSD intake, BTR valvetrain, ARP studs, ProFlow valves, PS4 tires.