C5 with LS7 lingenfelter glowing red CATS
Hello to everyone on this forum. My name is Toni and I'm from Barcelona SPAIN.
I recently have bouht a 2002 C5 Z06 with an LS7 cammed lingenfelter engine (580RWHP on dyno).
Now I have to pass the emissionn control and I install a new set of cats, and I could see at idle the cats overheat and glowing red. When rev to static 2000rpm cats temp goes down and have no red cats.
There is no misfire, no codes, and AEM AFR stays arround 14,7, I try different idle timming from 13 degree to 26 degree and cats still glowing red at idle.
Injectors are BOSCH 0280156030.
O2 sensors are new.
Plugs are new NGK TR6
Cats are Magnaflow 59959, I also try KOOKS 307540 and all glowing red.
I also have a 2008 Z06 with a camed American Heritage engine (615rwhp dyno) with oem injectors, TR6 pluggs, and Kooks complette exhaust (307540 cats) and have no problem, cats still hot but no glowing red cats and pass emission control with no problem.
Any help will be apreciate.
I can send datalogs and actual tune.
Thanks on advance.
Toni