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remove vics shutters=no low end power??
Posted: June 28th, 2005, 8:57 pm
by Joey's mx
Ok if removed my vics shutters from my intake manifold when i got my custom intake built!!! No my car seems to lack power in the low rpm's, could the shutters cause this?? If not does anyone know what could??
*Dohc B6!!!!
Posted: June 28th, 2005, 10:15 pm
by atlantamx3
Uhh... yeah.
Mazda engineers designed the VICS system for a reason...
Posted: June 29th, 2005, 7:50 am
by matt_fulghum
... why did you remove the VICS shutters?
Re: remove vics shutters=no low end power??
Posted: June 29th, 2005, 10:30 am
by D323
Joey's mx wrote:... removed my vics shutters from my intake manifold when i got my custom intake built...
ummm, boost it and then its no longer an issue
Posted: June 29th, 2005, 11:10 am
by facko
yea they do...they have a diagram how it works in the online shop manuel along w/ a chart of the HP w/ the shutters open and closed.
Posted: June 29th, 2005, 11:13 am
by atlantamx3
This:
Posted: June 29th, 2005, 11:15 am
by facko
yea thats the one
Posted: June 30th, 2005, 2:25 am
by cjthor
I just welded mine shut to make an easier more fluid and quick flow for the manifold. Of course I am boosted.
Posted: June 30th, 2005, 5:08 pm
by D323
cjthor wrote:I just welded mine shut to make an easier more fluid and quick flow for the manifold. Of course I am boosted.
why not weld them on the open postion? It would allow for greater air flow.... anytime your boosted, and you can remove a restriction in the intake manifold, its a good thing.
http://www.clubprotege.com/forum/showpo ... stcount=38
Ryan (bpt323) on clubprotege has proven through modding the VICS and smoothing out the inside of the chamber, you can achieve a smoother powerband, resulting in a few extra hp. I would hate to think what not having the 2nd set of runners is doing to your top end.....
Posted: June 30th, 2005, 6:08 pm
by Joey's mx
OK thanks guys i will be putting the shutters back in on the weekend!! I hope this will solve my no power issue!!!!
Posted: July 1st, 2005, 12:31 pm
by cjthor
D323 wrote:cjthor wrote:I just welded mine shut to make an easier more fluid and quick flow for the manifold. Of course I am boosted.
why not weld them on the open postion? It would allow for greater air flow.... anytime your boosted, and you can remove a restriction in the intake manifold, its a good thing.
http://www.clubprotege.com/forum/showpo ... stcount=38
Ryan (bpt323) on clubprotege has proven through modding the VICS and smoothing out the inside of the chamber, you can achieve a smoother powerband, resulting in a few extra hp. I would hate to think what not having the 2nd set of runners is doing to your top end.....
How did he "mod" his system? VICS is different that VIRS correct? I figured that if you welded them closed the runners would be as short as possible and make it a straight shot. Should I have welded them open?
open
Posted: July 2nd, 2005, 10:29 am
by forcedairram
I just unplugged the wires to one of the solenoids, which opens the valves and keeps them that way. I have tried running my car with VICs operational and with it wide open, i definately saw a nice gain with them open. I think it also depends on what all you have done to your car. But i saw improvements both N/A and boosted.
Also when open you have more mass to your airflow, best bet would be to use the bottom half of the manifold and make a custom upper half(plenum) the beautiful runners will act similar to that of a velocity stack. You gotta love those huge ports leading into the bottom half of the manifold!!!!