i have been looking at this jackson racing v-tec performance amplifier controller.i am wondering if it would be worth it to buy, like will i gain some hp

 

what?

 

get a vafc if you want one, but dont expect drastic hp gains by adjusting your vtec point, you may even lose power.

 

exactly so how would u know where to put vtec anyway

 

[QUOTE=HJLau75]by looking at the aggressivness of the spike in a dyno graph when vtec engages. You typically want to make it as smooth of a changeover as possible.

 

having posting troubles Nate?

You want to put VTEC where the primary cam lobes are maxed out and have the smoothest and highest crawling dyno power line as possible.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HJLau75 &raquo;</TD></TR><TR><TD CLASS="quote">exactly so how would u know where to put vtec anyway</TD></TR></TABLE>

There is always the basic traditional method:
Set the VTEC activation point excessively low, then do a dyno pull. Next, set the VTEC activation point extremely high and do another pull. Where the curves of the two runs intersect is where you want the activation point set at.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Padawan &raquo;</TD></TR><TR><TD CLASS="quote">

There is always the basic traditional method:
Set the VTEC activation point excessively low, then do a dyno pull. Next, set the VTEC activation point extremely high and do another pull. Where the curves of the two runs intersect is where you want the activation point set at. </TD></TR></TABLE>

i second that