Vafc

[Kanna_Altezza]

Anyone have fitted a Apexi Vafc 2 bluescreen into altezza ?

pros???
con???

 

[aycy]

i though VAFC is for vtec car only?

 

[hansc]

it works for VTEC and MIVEC as well as VVTi... as long as the engine running on variable valve timings or equivalent......

 

[cuscostrutbrace]

I dunno if it will work on vvti engine because the difference on how the system works.VTEC,MIVEC and VVT are simply Rpm triggered (on and off system),but VVTi system are constantly triggered,the ecu varies the duty cycle according to Rpm.Maybe somebody have experience with this,can share..

 

[Kanna_Altezza]

but as i know its all the same but different manufacture different name but how it works is the same , Vtec/I-Vtec is same VVti , Mivec umm Vonos or some other name that has variable time is the same

 

[cuscostrutbrace]

Yes,the aim is the same,to vary the camshaft timing.But how it is done is different.

VTEC is simple on and off function.It is rpm triggered.VTEC is a cam changing variable valve timing.It changes to another cam when it engages.The amount of duration and lift (also timing) is determined by the camshaft itself.

VVT (not VVTi) is a cam phasing variable valve timing.It just adjust the opening and closing of the valve (the timing).It is rpm triggered and only varies the timing by fixed amount (like 15deg).

VVTi is also a cam phasing system but constantly varies the timing according to rpm range (say like between 0-15deg).Hence it is not rpm triggered.It is duty cycle controlled.

I-VTEC combines VVT/VVTi and VTEC together.

MIVEC is the same like VTEC,VANOS is the same like VVT/VVTi

For VVTi controller,i suggest Power Enterprise CAMCON CC-101

Just my 2cents,correct i'm wrong :-)