Has anyone removed or disabled The VTCS??

[shinzen]

I am thinking they are hitting the hard stuff as well, but who knows maybe we all are the ones that are messed up

 

[twilightprotege]

shinzen - i got about a 20% increase in cfm flow out of my p&p of the head from memory...with my full exhaust system i'm hoping it'll help me reach 150whp.

pr5matt - i dont have vcts stock (us aussies dont get it)....and as thewrench proved, the vics butterflys are close at low rpm, they open at high rpm

 

[70]

(uhm)
Just one HUGE problem with that explanation: At WOT there is low/no vacuum. Also you need short runners then, not l-o-n-g ones...

Low-end torque= low RPM= high vacuum (long runners needed not shorter ones)

Top-end power= high RPM= low vacuum (short runners needed not longer ones)

Are you sure you are not screwed up, or are Mazda engineers smoking Crack?

To simulate shorter runners in the IM, VICS opens thus creating more intake volume at higher RPM. More intake volume is like having shorter runners.

It works...

The 626 was a dog up high becuase of the single length long runners. Everyone I have talked to who have driven both the protege with the 2.0-liter motor and the 626 with the similar motor have said the 626 was not has good.

626 IM = old crappy technology.
Protege IM w/ VICS = Better flowing and new technology.
FS-ZE IM = Best...

But, that's just MHO.

 

[thewrench]

Quote:
<TABLE cellSpacing=0 cellPadding=6 width="100%" border=0><TBODY><TR><TD class=alt2 style="BORDER-RIGHT: 1px inset; BORDER-TOP: 1px inset; BORDER-LEFT: 1px inset; BORDER-BOTTOM: 1px inset">Originally Posted by PR5Matt
(uhm)
Just one HUGE problem with that explanation: At WOT there is low/no vacuum. Also you need short runners then, not l-o-n-g ones...

Low-end torque= low RPM= high vacuum (long runners needed not shorter ones)

Top-end power= high RPM= low vacuum (short runners needed not longer ones)

Are you sure you are not screwed up, or are Mazda engineers smoking Crack? </TD></TR></TBODY></TABLE>

That's what Perfworks said, he just said it in kind of a back-ass-wards way