On the S&S's Isnt the 02 sensor bung hole on the crossover section, so its only reading from the 3 front pistons?
You won't lose any torque by removing it, the whole you need backpressure or else you'll lose low end power doesn't really apply to forced induction set-ups. Do what you want, I'd personally remove it but that's just me. But just an fyi you won't gain that much by removing it either.when i get the headers, should i drop the cat, or leave it on? i have heard that if you actually take out too much restriction from the exhaust you may actually lose torque.