FMIC Pipe Mod To Fit HKS Dump Valve, Is It A Good Idea??
12 January 2008, 08:16 PM
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FMIC Pipe Mod To Fit HKS Dump Valve, Is It A Good Idea??
How do, I've got a FMIC with a standard hard pipe kit, which has an oulet for a dump valve on the intercooler to manifold inlet pipe.
At the moment I have my HKS SSQ fitted with a bit of silcon hose, doesn't look all that special and it hides the HKS SSQ out of sight.
I've seen a Classic somewhere on SN where the owner has cut of the outlet for the dump valve, and then welded the HKS SSQ bracket striaght onto the hard pipe, inturn making the outlet twice as big.
With the outlet being twice as big will that cause any problems, or make the dump valve any louder etc....
I only ask as I wasn't sure if the outlet pipe to the dump valve had to be any particular size for it to work correctly.
At the moment I have my HKS SSQ fitted with a bit of silcon hose, doesn't look all that special and it hides the HKS SSQ out of sight.
I've seen a Classic somewhere on SN where the owner has cut of the outlet for the dump valve, and then welded the HKS SSQ bracket striaght onto the hard pipe, inturn making the outlet twice as big.
With the outlet being twice as big will that cause any problems, or make the dump valve any louder etc....
I only ask as I wasn't sure if the outlet pipe to the dump valve had to be any particular size for it to work correctly.
12 January 2008, 09:48 PM
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If you have a Hybrid FMIC or one of the Hybrid copies it already has a spiggot to take the D.V. It is a shrt distance down stream from the throttle body and faces down towards the ground.
12 January 2008, 09:52 PM
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I want to know if I cut that off and wldd the hole up, and then weld the HKS mounting adapter in a better place with the mounting adapter flush with the pipe, so no need for silcon hose or extra bit of pipe, will that effect the way the dump valve works?
I've found where I saw it now it was in Jap Performance mag on a Silver Classic Impreza, I'll see if I can add the photos.
13 January 2008, 01:10 PM
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my HKS FMIC came with a SSQV hole in it all ready, you can see it on the hard pipe top right;
and fitted below.
ironicly I'm making up an adapter to run the OEM BOV to try and reduce surge.
and fitted below.
ironicly I'm making up an adapter to run the OEM BOV to try and reduce surge.
Last edited by trails; 13 January 2008 at 01:13 PM.
02 April 2008, 10:48 AM
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Well I've just had the HKS mouting plate welding in, and I'm well happen. It's totally changed the sound of the dump valve, its not so fluttery. The car seems to run smoother after dumping the boost too.
I had a chat to my local garage and it's possible I was suffering surge, before and now with the mounting plate welding in I've elminated it.
It looks cool too
I had a chat to my local garage and it's possible I was suffering surge, before and now with the mounting plate welding in I've elminated it.
It looks cool too
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