HKS EVC - Page 31

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２．４．SettingtheTargetBoost
２．５．SettingtheCorrectionCoefficient
(１)Turnthevolumeknobtoselectthedesiredtargetboostvalue.
・Thedigitaldisplay(S)shows"".
・ThetargetvalueisforbothA&Bboostsettings.
・ChangestotargetboostforbothA&Bmodescanmade
intheStandardModeaftercompletingtheinitial
setting.
(２)Pressthevolumeknobaftersettingthetargetboost.
Goto2.5forsettingthecorrectioncoefficient.
(１)Ensurethedisplayisasshownintheillustration
ontheleft.Drivethevehicletoreachthemax
boost.Ifthetargetboostandtheactualmaxboost
donotmatch,turnthevolumeuntiltheactualmax
boostreachestothetargetboost.
 ・Thespeed/RPMdisplayshows"".
・Increasingthecorrectioncoefficientraisesboost
anddecreasingthecoefficientreducesboost.
・Thedigitaldisplay(S)showsthepeakholdvalue
andthedigitaldisplay(L)showsthecurrent
boostvalue.
(２)Pressthevolumeknobaftersettingthecoefficient.
Thiscompletestheinitialsetting.
Goto3forthestandardmode.
Setthetargetboostleveldesired
Ifthetargetcannotbeachieved,increaseordecreasethecorrectioncoefficienttoadjust
theboosttothetargetvalue.
Note
・Forthevehicleequippedwiththeboostsolenoidvalve,afterinstallingtheEVC,the
standardmaxboostwillbelowerthantheboostbeforeinstallingtheEVC.
・Inthebelowcases,themaxboostcannotreach250kPa:
(ａ)Thesetload(spring'sforce)ofthewastagate'svalveoractuatoristoolow.
(ｂ)Theexhaustbackpressureiscreatingaresistance.
・Inthebelowcases,theboostcannotbestabilized:
(ａ)Wastegate'svalveareaand/oritsstrokeinnotsufficent.Or,theboostcreepor
dropisduetotheactuatorincapacity.
(ｂ)Turboairvolumeisnotsufficentfortheenginedisplacement.Or,theboostcreep
ordropisduetoanincreaseintheexhaustpressure.
Therefore,conditionsandspecificationsofthevehiclemustbeexaminedcarefully
beforeinstallingtheEVC.
・Refertothefollowingproceduresforthesettingrangeofeachvalue.
RPM
B
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o
s
t
B
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o
s
t
RPM
StableBoost
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