Why no zoomies?
Noticed in my instructions it says no zoomies for exhaust? How does this cause a problem with the system?
Primary reason is that with zoomies - you have no choice but to install the O2 sensor on one of the pipes so you are measuring only 1 cylinder. When connecting to conventional header collector - at least you are measuring an average of 4 cylinders (right or left).
Reversion would be an issue as well just like open headers.
Quote from 69_R-Code on January 2, 2025, 10:59 amPrimary reason is that with zoomies - you have no choice but to install the O2 sensor on one of the pipes so you are measuring only 1 cylinder. When connecting to conventional header collector - at least you are measuring an average of 4 cylinders (right or left).
Reversion would be an issue as well just like open headers.
I was thinking even if it's reading one cylinder ,the o2 will still adjust,it may not be as accurate? But the o2 should still work if you have the right distance away from the engine and the tip of the exhaust?
O2 will be pretty inaccurate as individual cylinders sometimes vary greatly on AFR.
I would think and maybe I'm wrong ,but wouldn't the afr be adjustable, to your afr targets, you'd just be adjusting it to the one cylinder with the o2,why wouldn't the other cylinders be close to the same reading within reason,
Not to be off subject a bit,I've had and seen factory cars with headers and one o2 sensor into the header pipe and they ran fine,without extreme lean or high rich conditions , these were factory cars fuel injected cars ford/chevy 4cyl 6cly v8, one o2 sensor in the header pipe no collector on headers, zoomies , it doesn't make sense to me why fitech is much different