Let's say my modified LS2 is tuned and idles quite well with a mild-ish camshaft. It's a 2.5bar SD tune. If I was then to add a larger air intake (air bridge and filter) would you expect that to change anything idle speed-wise? Another thing I changed is instead of the PCV fresh air source at the rear of the driver valve cover being a 3/8" hose that went to the air bridge between the air filter and the throttle body......it's just basically a small K&N filter that sits right on the barb fitting on the valve cover. Another variable that's changed since my last tune is that I replaced the clutch with the same clutch but with a heavier version of the flywheel to aid in driveability. I find the car lost maybe 50 to 100 rpm idle. The tunes commanded rpm is 800 but it's touching 800 on the max side......does all these variables being changed make sense that the idle is different a bit? Or is 800 rpm commanded mean the car will do whatever on it's own with the throttle body to maintain that 800rpm. I just don't know if there are airflow tables or something that need to be tweaked now to compensate. Thanks
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