So if you slide your foot off the clutch sideways it should fire the clutch position sensor sooner, and maybe make the procede's NLS work better. You've halted acceleration, now you're going to violently transition to 100% throttle. Now even though your clutch is engaged, RPMs can't rise - your cars acceleration has stopped.ģ) The thud: The procede has realized your clutch is engaged, happy days. The clutch position sensor hasn't told the procede yet. The clutch (pedal) position sensor (optical, in the footwell) doesn't know that.Ģ) The jerk: The procede is keeping RPMs steady, it thinks your clutch is still engaged. It's on there.Įvents in time after you release the clutch pedal:ġ) Your clutch is mechanically engaged. Your clutch engages after you remove your foot from the clutch pedal. This patch is applicable only to a ROM image downloaded from a EDM Subaru Impreza WRX with calibration id AZ1E400U.Yea pretty much,i tried to let it out slower and its was a little s off now untill i remove the CDV and try again The purpose of this feature is to allow you to hold your foot planted to the throttle while stationary and forcing an RPM delta (offset to real rev limit) that allows the car to hold a user desired rev limit and launch with as much less wheelspin as possible when releasing the clutch. Boost will not drop between shifts as the throttle remains wide open.Reduced stress on the transmission when used properly.What benefits can you expect from using FFS? The FFS limiter is enabled when the vehicle speed is above the LC speed threshold and the clutch pedal is depressed. The purpose of this feature is to allow you to hold the throttle fully open while shifting gears.

What is flat foot shifting