vti34 Posted July 1, 2011 Share Posted July 1, 2011 hi fello´s!! i´m from portugal and i usually drive a mc2 1.8 vti. i had an idea of changing the vtec engage point and the iab´s.i´de like to engage the iab´s at 4400 rpm and the vtec at 5750rpm, i ´ve an question to make. does the ecu,to engage iab´s, send positive to solenoid iab´s to cut off the vacuum or take it off?thank you all . Link to comment Share on other sites More sharing options...
noodels Posted July 2, 2011 Share Posted July 2, 2011 its 4300 anyways and 5750 not worth it!!when you turn ignition on buterflies shut, turn of they open the ecu has earth constant to iabs so after 4300 takes of earth. Link to comment Share on other sites More sharing options...
Didjeridave Posted July 5, 2011 Share Posted July 5, 2011 In case you hadn't seen it, Buddyclub make a unit that adjusts vtec changeover point on the fly, no remapping or any other mods at all, just plug & play. Link to comment Share on other sites More sharing options...
noodels Posted July 5, 2011 Share Posted July 5, 2011 its 4300 anyways and 5750 not worth it!!when you turn ignition on buterflies shut, turn of they open the ecu has earth constant to iabs so after 4300 takes of earth. fail iabs5750vtec4300 Link to comment Share on other sites More sharing options...
civicturbo79 Posted July 7, 2011 Share Posted July 7, 2011 The iabs and the vtec are controlled by the ecu . so remaping is the best way to change them as if you move them you will need to change the map .Rich. Link to comment Share on other sites More sharing options...
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