Thunder Racing headers- custom y-pipe?
Secondly- Thunder Racing tells me that I will need a custom, catless y-pipe. A technical support person there told me that I should not install O2 sensor fittings into this y-pipe, and instead use four O2 simulators. Is this advisable? I would hate to screw with my computer by tricking it like that. Is it at all possible for me to continue to run O2 sensors without the cats, perhaps with some tweeking with LS1 edit?
-Thanks for your help-


