Mazda Rotary Club

Cars by Model Type => 3rd generation RX-7's => Topic started by: Jeffers_21 on August 16, 2009, 10:03:45 PM

Title: APEXi Exhaust Control Valve?
Post by: Jeffers_21 on August 16, 2009, 10:03:45 PM
Anyone useing one one the fd?

i like the idea of it as i really like my blitz system but i wouldnt mind it being a bit quieter when i get home so i dont .... off next door to much + it would be handy if ya see the fuzz around.

my only concern with it is the back presure you would get from closing the valve up?

http://www.frsport.com/Apexi-APEX-i-155-A023-ECV-Exhaust-Control-Valve-Silencer-80mm_p_9083.html
Title: APEXi Exhaust Control Valve?
Post by: AshRX on August 16, 2009, 10:21:33 PM
Ben uses one on his TA car. He only uses it for sound testing on track. Makes a big difference. You wouldnt use it for WOT fully closed anyway
Title: APEXi Exhaust Control Valve?
Post by: Jeffers_21 on August 16, 2009, 10:36:44 PM
Hmm i might have to look into getting one. like i said i would only want it for coming home late or leaving early for work. and i really dont want to change the exhaust system. Ill wait and see if anyone else is using one before i decided to get one. :)
Title: APEXi Exhaust Control Valve?
Post by: AshRX on August 16, 2009, 10:37:36 PM
it will be fine for that purpose mate.
Title: APEXi Exhaust Control Valve?
Post by: Jeffers_21 on August 16, 2009, 10:40:58 PM
cool ;) sounds good to me
Title: APEXi Exhaust Control Valve?
Post by: darknight7777777 on August 17, 2009, 12:51:39 AM
i am going to fit one for the same reason as jeffers 21 but i am making a electronic controller to open and close mine so i dont need to run the control cable into the car.
Title: APEXi Exhaust Control Valve?
Post by: JTW86 on August 17, 2009, 01:49:10 AM
I\'ve got one installed on my FC for the exact same purpose as you mate.
Works a treat!!
Title: APEXi Exhaust Control Valve?
Post by: rx7boy on August 17, 2009, 02:04:25 AM
Quote from: darknight7777777;635122i am going to fit one for the same reason as jeffers 21 but i am making a electronic controller to open and close mine so i dont need to run the control cable into the car.

Was thinking of doing the same thing. U have any ideas on how ur going to do it !!!
Title: APEXi Exhaust Control Valve?
Post by: Jeffers_21 on August 17, 2009, 07:53:25 AM
I belive apexi do make a electronic device to go along with it. although you could make your own with a little motor, cant see it would be that complicated. :)
Title: APEXi Exhaust Control Valve?
Post by: SiH on August 17, 2009, 08:30:36 AM
Unfoprtuantely the Apexi DECS control unit is discontinued :( And they have a reputation for being  abit unreliable as well - I know of several that have just died with no warning :(
Title: APEXi Exhaust Control Valve?
Post by: hairyhoover on August 17, 2009, 08:33:14 AM
Shame it\'s not on a actuator like waste gate so it opened at 1/2 psi
Title: APEXi Exhaust Control Valve?
Post by: darknight7777777 on August 17, 2009, 10:25:20 PM
i am thinking of putting a heavy duty servo have it connect half way down the cable to avoid heat and then connect a servo controller to that and then choose between the following three options to adjust it:
 
1. have simple open and close manual switch.
2.have rotary knob that can open and close with the knob
3. connect to tach and have it open progressively with revs.
 
i am going to try the third option but not sure if its gonna work till i try it.
 
i have been looking for decs control unit for ages but no luck.
Title: APEXi Exhaust Control Valve?
Post by: rx7boy on August 18, 2009, 12:31:29 AM
Quote from: darknight7777777;635354i have been looking for decs control unit for ages but no luck.

I can get it but its over £600 so its not worth it..

Like your ideas of servo unit option number 2

let us know how u get on