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Once you start messing with cams combined with lighter flywheels things happen. Not always but normally the car idles like a pig. My engine used to run some quite wild regrinds for cams and a lightweight flywheel and moving off from an intersection was a task and a half. Also idled like it had rocks in the intake, I went back to a stock head and cams and removed the flywheel and put it on my n/a and it idled perfectly again. I just didn't need that hassle on a daily driver.
There is one thing that can get out of whack, On the intake there is a white box looking sensor (there is on all mine) with 3 wires coming out. Unplug it and see if things improve, it is a sensor that helps control idle and they can get messed up, it may help or make it worse but try it anyway.
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