I know the STi will be offering liek AVCD or something.. i was wondering..does the EVO have any valve system..maybe somethin like vtec or vvti... nething at all? I was just wondering as i'm used to working wit types of motors that have active valve systems.. thanks tho..

 

From what I know, this engine is a traditional DOHC motor, no electromechanical valve mechanisms to increase lift or adjust cam duration/Timing. This engine produces quite a bit of grunt over a fairly wide RPM Range.. The biggest advantage of VVTI or VTEC systems was to broaden the RPM/HP Range of a peaky engine, where its power generally would peak at a higher RPM than what most people use.. having variable valve timing allows them to broaden that range for drivability's sake, plus return to the high-revving peaky power under performance driving..

 

Ha..okay..lol.. i get it know..so basically the engine creates power all throughtout the revs..i never knew tho, that, that's what vtec was for.. thanks alot malibu..

 

AVCS (Active Valve Control System) in the STi (and other JDM cars) has three "maps" that the ECU uses to
1. Improve idle stability
2. Improve fuel consumption at medium speeds
3. Improve power output during high engine speed/load

Depending on several factors, the ECU decides which map to use, which can help it maintain a better VE.

TRS