silicone filled intake ramp does do a few things , most noticeably the reduction of the staged idle by filling an airpocket that completely disrupts incoming flow of air/fuel when going from high vacuum to low vacuum on the intake of the crank , noticed a HUGE difference in the way the engines tuned off throttle and it threw me for a loop back in '06-'07 ish when the 821b was the first engine to come with the lightened crank that was unfilled . one thing i can tell ya is every single one of my multi repeat customers from all over the world have tried both and prefer a filled crank , we all do things a lil differently , we all have different opinions , we all feel things that others dont .


i have met well educated people in all different fields who thought they were the masters of what they studied in miss even the simplest of things looking a project over because they were too concentrated on the "deeply technical" aspect of the job