Hello, I am new to your forums so please don't flame me... I just installed an AEM V2 intake in my 03 Civic EX 2DR.. followed all directions but it was easy enough anyways. Problem is, when I reach the VTEC crossover point I don't hear the switch to the high load cam setting.. its like VTEC isn't engaging.. what could be wrong? All harness clips I moved (for working space) were put back correctly. Any ideas?

 

03 ex's use a different type VTEC than the usual DOHC VTEC (it uses vtec-e)... basically.... meaning... you probably cant hear it... cause the engagement isn't as loud on a SOHC

it has nothing to do with the intake

 

Thankyou for your reply, that takes some stress of my chest now

 

o1 and higher have soft vtec

 

thats funny, i have a vx w/ a intake and i can hear my vtec pop nasty

 

the newer civics are quiter so you can't hear V-Tec Engage well even with an intake. the new civics however do whenever vtec is not engaging properly at the set RPMS the car will tend to jerk forward and RPMS will start to jump between the factory tuned Vtec RPMS and NON VTEC RPMS.