Jump to content
SAU Community

Hks Vs Gcg Wastegate Actuators

SiR_RB

By SiR_RB,
in Engines & Forced Induction

 Share

Recommended Posts

SiR_RB Grand Master

SiR_RB

Posted
Posted

Hey guys

I'm getting major boost drop at high rpm because I've got my standard 8psi actuators running 19psi

Are there any differences between the GCG and HKS actuators?

I got quoted about $440 for 15psi GCG actuators and about $320 or so for the HKS items

I don't need them to be adjustable just preset at 14-15psi and after a set which will hold boost the best

Thanks

Link to comment
https://www.sau.com.au/forums/topic/378595-hks-vs-gcg-wastegate-actuators/
Share on other sites
R31Nismoid Grand Master

R31Nismoid

Posted
Posted

How did you get quoted $440 when they are on their site @ $120ea?

http://www.gcg.com.au/index.php?page=shop.product_details&flypage=flypage.tpl&product_id=556&category_id=39&option=com_virtuemart&Itemid=53

:)

SiR_RB Grand Master

SiR_RB

Posted
  • Author
Posted (edited)

Yeh I'm getting about 4psi drop ! Afew people only get about 2psi drop which is pretty good

They came with the turbos, have been tested and are fully open at. 8psi

They are adjustable but duno if they can be tightened up for 14psi. And I don't want to risk tightening it too much then the wastegate flat won't open all the way?

Edited by SiR_RB
Don Dada Mentor

Don Dada

Posted
Posted (edited)

Yeh I'm getting about 4psi drop ! Afew people only get about 2psi drop which is pretty good

They came with the turbos, have been tested and are fully open at. 8psi

They are adjustable but duno if they can be tightened up for 14psi. And I don't want to risk tightening it too much then the wastegate flat won't open all the way?

So with the EBC off you are seeing 8psi?

Even though, they are adjustable for a reason. I think you should shorten the rods a bit and see what results you get from that first.

However I dont think you'll be able to tighten them up to 14psi, but you should be able to reduce that drop off a bit

Edited by Don Dada

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • Haggerty
      RB25DE NEO with Haltech ECU

      By Haggerty · Posted

      I guess one thing that might be wrong is the manifold pressure.  It is a constant -5.9 and never moves even under 100% throttle and load.  I would expect it to atleast go to 0 correct?  It's doing this with the OEM MAP as well as the ECU vacuum sensor. When trying to tune the base map under load the crosshairs only climb vertically with RPM, but always in the -5.9 column.
    • CF.Panda
      R34 25GT Engine Light 21

      By CF.Panda · Posted

      AHHHH gotchaa, I'll do that once I am home again. I tried doing the harness with the multimeter but it seems the car needed a jump, there was no power when it was in the "ON" position. Not sure if I should use car battery jump starter or if its because the stuff that has been disconnect the car just does send power.
    • Haggerty
      RB25DE NEO with Haltech ECU

      By Haggerty · Posted

      As far as I can tell I have everything properly set in the Haltech software for engine size, injector data, all sensors seem to be reporting proper numbers.  If I change any injector details it doesnt run right.    Changing the base map is having the biggest change in response, im not sure how people are saying it doesnt really matter.  I'm guessing under normal conditions the ECU is able to self adjust and keep everything smooth.   Right now my best performance is happening by lowering the base map just enough to where the ECU us doing short term cut of about 45% to reach the target Lambda of 14.7.  That way when I start putting load on it still has high enough fuel map to not be so lean.  After 2500 rpm I raised the base map to what would be really rich at no load, but still helps with the lean spots on load.  I figure I don't have much reason to be above 2500rpm with no load.  When watching other videos it seems their target is reached much faster than mine.  Mine takes forever to adjust and reach the target. My next few days will be spent making sure timing is good, it was running fine before doing the ECU and DBW swap, but want to verify.  I'll also probably swap in the new injectors I bought as well as a walbro 255 pump.  
    • AnimalGarage
      spot the stagea

      By AnimalGarage · Posted

      It would be different if the sealant hadn't started to peel up with gaps in the glue about ~6cm and bigger in some areas. I would much prefer not having to do the work take them off the car . However, the filler the owner put in the roof rack mount cavities has shrunk and begun to crack on the rail delete panels. I cant trust that to hold off moisture ingress especially where I live. Not only that but I have faded paint on as well as on either side of these panels, so they would need to come off to give the roofline a proper respray. My goal is to get in there and put a healthy amount of epoxy instead of panel filler/bog and potentially skin with carbon fiber. I have 2 spare rolls from an old motorcycle fairing project from a few years back and I think it'd be a nice touch on a black stag.  I've seen some threads where people replace their roof rack delete with a welded in sheet metal part. But has anyone re-worked the roof rails themselves? It seems like there is a lot of volume there to add in some threads and maybe a keyway for a quick(er) release roof rack system. Not afraid to mill something out if I have to. It would be cool to have a cross bar only setup. That way I can keep the sleek roofline that would accept a couple bolts to gain back that extra utility  3D print some snazzy covers to hide the threaded section to be thorough and keep things covered when not using the rack. 
    • GTSBoy
      R34 Handbrake light saying ON and intermittently flashing

      By GTSBoy · Posted

      Probably not. A workshop grade scantool is my go to for proper Consult interrogation. Any workshop grade tool should do it. Just go to a workshop.
×
×
  • Create New...