# HKS wastegate actuator problem

**URL:** https://forums.speedlife.net/t/hks-wastegate-actuator-problem/102360
**Category:** SON240sx Automotive
**Created:** [December 9, 2006, 6:23pm UTC](https://forums.speedlife.net/t/hks-wastegate-actuator-problem/102360 "2006-12-09T18:23:21Z")
**Posts on this page:** 12
**Page:** 1

<div class="post-metadata">

### Author: ![Mista\_Sparkoh](https://avatars.discourse-cdn.com/v4/letter/m/3bc359/32.png) [@Mista\_Sparkoh](https://forums.speedlife.net/u/Mista_Sparkoh)
#### Post date: [December 9, 2006, 6:23pm UTC](https://forums.speedlife.net/t/hks-wastegate-actuator-problem/102360/1 "2006-12-09T18:23:21Z")

</div>

So I finally had the chance to install my HKS wastegate actuator but I ran into some problems with the install. It seems that the bracket that came with the wastegate wasn’t even close to the proper fittings (no clearance). So I re-used the OEM bracket and install was fine. Now the trouble begins:  
After the install, it is VERY hard to get boost and the BOV doesn’t even sound. I have to accelerate HARD to even register any boost, unlike the OEM where it was responsive. Also, my fuel consumption has gotten worse since the install. Below are some pictures of the engine bay and I can’t seem to figure out the problem.  
Here is a pic of my WG  
 ![http://i7.photobucket.com/albums/y277/KennethChan/Misc/DSC01563.jpg](http://i7.photobucket.com/albums/y277/KennethChan/Misc/DSC01563.jpg)

Here is a shot covering the driver side bay. All the lines haven’t been moved, all I did was replace the WG and put the hose where it belonged so I didn’t touch any other hoses except the one leading to the WG  
 ![http://i7.photobucket.com/albums/y277/KennethChan/Misc/DSC01566.jpg](http://i7.photobucket.com/albums/y277/KennethChan/Misc/DSC01566.jpg)

I’m curious as to what this is. Maybe this could be the problem. ![http://i7.photobucket.com/albums/y277/KennethChan/Misc/DSC01565.jpg](http://i7.photobucket.com/albums/y277/KennethChan/Misc/DSC01565.jpg)  
 ![http://i7.photobucket.com/albums/y277/KennethChan/Misc/DSC01569.jpg](http://i7.photobucket.com/albums/y277/KennethChan/Misc/DSC01569.jpg)

Anyways, any help would be appreciated. I didn’t do the SR20DET engine install myself so I’m still not sure what parts are what.

---

<div class="post-metadata">

### Author: ![spd-dmn](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/spd-dmn/32/5513_2.png) [@spd-dmn](https://forums.speedlife.net/u/spd-dmn)
#### Post date: [December 9, 2006, 6:50pm UTC](https://forums.speedlife.net/t/hks-wastegate-actuator-problem/102360/2 "2006-12-09T18:50:42Z")

</div>

Sounds like your wastegate isn’t closing all the way.

Is the actuator rod adjustable? It may be too far out.

---

<div class="post-metadata">

### Author: ![Oni-Kyan](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/oni-kyan/32/5503_2.png) [@Oni-Kyan](https://forums.speedlife.net/u/Oni-Kyan)
#### Post date: [December 9, 2006, 8:23pm UTC](https://forums.speedlife.net/t/hks-wastegate-actuator-problem/102360/3 "2006-12-09T20:23:47Z")

</div>

in the top pic you can even see that the wastgate is half open man.  
un clip it and give the give the flaper a wiggle to get to sit closed then tighten the rod and clip it back on.  
Mael

---

<div class="post-metadata">

### Author: ![Jedi\_Car\_Fan](https://avatars.discourse-cdn.com/v4/letter/j/b9e5f3/32.png) [@Jedi\_Car\_Fan](https://forums.speedlife.net/u/Jedi_Car_Fan)
#### Post date: [December 9, 2006, 8:26pm UTC](https://forums.speedlife.net/t/hks-wastegate-actuator-problem/102360/4 "2006-12-09T20:26:41Z")

</div>

> [@Oni-Kyan](#):
>
> in the top pic you can even see that the wastgate is half open man.  
> un clip it and give the give the flaper a wiggle to get to sit closed then tighten the rod and clip it back on.  
> Mael

Agreed…

Their should be a decent amount of force on that rod as well to ensure that the gate does not open under boost either (just keep tightening it and trying to pull the arm to open the door) it should take a decent tug to open it.

But hopefully you have a boost gauge to keep an eyee on it… if then to be on the safe side just go a little @ a time. 😉

---

<div class="post-metadata">

### Author: ![Mista\_Sparkoh](https://avatars.discourse-cdn.com/v4/letter/m/3bc359/32.png) [@Mista\_Sparkoh](https://forums.speedlife.net/u/Mista_Sparkoh)
#### Post date: [December 9, 2006, 9:05pm UTC](https://forums.speedlife.net/t/hks-wastegate-actuator-problem/102360/5 "2006-12-09T21:05:04Z")

</div>

when I initially installed it, I had the arm screwed towards the bladder until the gate arm was perpendicular to the ground. I extended the arm because I thought it was the other way around. I do have a boost gauge and I can see that after I installed the WG, the needle hardly passes 0 whereas the OEM was faster and climbed to max boost at the intended rpm range

---

<div class="post-metadata">

### Author: ![Mista\_Sparkoh](https://avatars.discourse-cdn.com/v4/letter/m/3bc359/32.png) [@Mista\_Sparkoh](https://forums.speedlife.net/u/Mista_Sparkoh)
#### Post date: [December 9, 2006, 9:11pm UTC](https://forums.speedlife.net/t/hks-wastegate-actuator-problem/102360/6 "2006-12-09T21:11:40Z")

</div>

I’ll shrink the rod length again cause the general consensus is that it’s closed when the turbo gate arm is perpendicular to the ground. If that doesn’t help the problem then I’m screwed  
thanks guys

---

<div class="post-metadata">

### Author: ![Mista\_Sparkoh](https://avatars.discourse-cdn.com/v4/letter/m/3bc359/32.png) [@Mista\_Sparkoh](https://forums.speedlife.net/u/Mista_Sparkoh)
#### Post date: [December 12, 2006, 6:44pm UTC](https://forums.speedlife.net/t/hks-wastegate-actuator-problem/102360/7 "2006-12-12T18:44:44Z")

</div>

Ah…finally I got the damn thing to properly boost up  
So yeah, the rod was too far out and jus in case, I overshorten the rod so I had to pull it out a bit so I can hook it to the WG arm  
The thing that gets me is that the WG is SUPPOSED to provide a max boost of 11-12 psi, but I have to rev at higher rpms in order to push past stock boost (7 psi). Is it supposed to be like this? or is it supposed to have the same response as the OEM one?

---

<div class="post-metadata">

### Author: ![Sasha\_SG](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/sasha_sg/32/5477_2.png) [@Sasha\_SG](https://forums.speedlife.net/u/Sasha_SG)
#### Post date: [December 12, 2006, 7:39pm UTC](https://forums.speedlife.net/t/hks-wastegate-actuator-problem/102360/8 "2006-12-12T19:39:53Z")

</div>

keep closing it until it spikes up a bit then back it down

---

<div class="post-metadata">

### Author: ![Mista\_Sparkoh](https://avatars.discourse-cdn.com/v4/letter/m/3bc359/32.png) [@Mista\_Sparkoh](https://forums.speedlife.net/u/Mista_Sparkoh)
#### Post date: [December 12, 2006, 9:26pm UTC](https://forums.speedlife.net/t/hks-wastegate-actuator-problem/102360/9 "2006-12-12T21:26:30Z")

</div>

> [@Sasha (Turbo)](#):
>
> keep closing it until it spikes up a bit then back it down

sorrie if I sound like a noob, but wat does that mean?

---

<div class="post-metadata">

### Author: ![Sasha\_SG](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/sasha_sg/32/5477_2.png) [@Sasha\_SG](https://forums.speedlife.net/u/Sasha_SG)
#### Post date: [December 13, 2006, 6:53am UTC](https://forums.speedlife.net/t/hks-wastegate-actuator-problem/102360/10 "2006-12-13T06:53:32Z")

</div>

keep tightening the rod and testing it until the boost goes up to like 13psi and then starts dropping down to 10ish

then lower it a bit and it should hold a constant 10

---

<div class="post-metadata">

### Author: ![DTS](https://avatars.discourse-cdn.com/v4/letter/d/8491ac/32.png) [@DTS](https://forums.speedlife.net/u/DTS)
#### Post date: [December 14, 2006, 12:18am UTC](https://forums.speedlife.net/t/hks-wastegate-actuator-problem/102360/11 "2006-12-14T00:18:06Z")

</div>

its supposed to be hard to pull the actuator arm onto the flap.

if you can just slip it on you dont have the arm anywhere near short enough.

btw the hks wastegate is only efficent at 10PSI + otherwise the stock actuator arm is much better.

---

<div class="post-metadata">

### Author: ![S13GG](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/s13gg/32/5506_2.png) [@S13GG](https://forums.speedlife.net/u/S13GG)
#### Post date: [December 14, 2006, 6:49am UTC](https://forums.speedlife.net/t/hks-wastegate-actuator-problem/102360/12 "2006-12-14T06:49:41Z")

</div>

whast is this? you asked, charcoal evap canister for your fuel system, part of it is the 3rd line from your gas tank,

fuel lines = feed, return, vapour-this goes to the can.
