Jump to content
SAU Community

Recommended Posts

hey guys

just wondering if i can run my car with no boost controller with my hks adjustable actuator?

my hiflow should be getting fixed soon and i dont want the hassle of getting caught with a boost controller.

i have heard that u can but being an internal gated turbo how much boost spike do you tend to get. or boost creep? (on my r33gtst)

much appreciated.

i did a search but couldnt find the answer i was looking for

thanks

You should be right running of an upgraded actuator, you'll only see the boost that the actuator is set too however.

It might taper off a little in the top end where a EBC might help hold boost

It might also build boost a little slower

But that are only a might, its not a certainty to occur, you might be totally fine :banana:

I have done this on other turbo engines with adjustable actuator, but not a skyline, basically the tightness (or preload) on the actuator will determine your max boost, the only big problem is if the line blows off the inlet pipe the actuator will keep the wastegut shut and you can overboost.

From experience...while these adjustable actuators do give some boost control...you still want a proper boost controller to hold the wastegate shut till you reach the desired level of boost...if not you'll have the wastegate creeping open as you build boost...set up properly a proper boost controller will give better response and also more midrange...

im running boost of the actuator..

on 16psi spikes to around 17-18 then drops..

when it was on 18psi spiked to 20psi :S

also feels a little laggy, can i get an ebc or do i have to get a stock r33actuator for the hks 2535?

also feels a little laggy, can i get an ebc or do i have to get a stock r33actuator for the hks 2535?

Boost controller is definately way to go, just remember though your lowest boost setting will always be dependant on how the actuator is set, so you could loosen off your actuator to the 7psi mark, then with the boost controller you can set your high mark at whatever you want.

Would have to reccommend the gizmo IBC as it is simple to use, has 4 settings, with gain control and controls the boost really well. definately improve your lag factor

With the HKS adjustable actuators i think the lowest you can go is around 14psi...from there you can use a boost controller to raise the boost...remember...you want to keep the wastegate shut while you build boost to the required level before it opens...thats where the response and surge of midrange comes from...

At 18psi peak boost for example a car will make the same power but if you hold the wastegate shut till max boost you build boost quicker and hence fatten up the midrange...its all about area under the curve...

Boost controller is definately way to go, just remember though your lowest boost setting will always be dependant on how the actuator is set, so you could loosen off your actuator to the 7psi mark, then with the boost controller you can set your high mark at whatever you want.

Would have to reccommend the gizmo IBC as it is simple to use, has 4 settings, with gain control and controls the boost really well. definately improve your lag factor

With the HKS adjustable actuators i think the lowest you can go is around 14psi...from there you can use a boost controller to raise the boost...remember...you want to keep the wastegate shut while you build boost to the required level before it opens...thats where the response and surge of midrange comes from...

At 18psi peak boost for example a car will make the same power but if you hold the wastegate shut till max boost you build boost quicker and hence fatten up the midrange...its all about area under the curve...

EmreA-Dyno03-03-2007.jpg

ok so set the hks actuator to as low as possible then get a ebc (dont have cash for profec b right now, ill search gizzmo) and set that to say 17-18ish..

would i need to get a retune?

You do not necessarily need to set the HKS actuator to as low as possible...i would use it to help control the spiking...if your boost is spiking too much then it would help to lengthen the actuator arm slightly...and if boost response is slow...then i would shorten the arm slightly as it probably shows its opening too soon...its a finicky process but once set about right then you're ready to use a boost controller of some sort to raise the boost...that way you'll get better boost control...

On a side note...i run the same turbo (HKS2535 on my rb20 and t makes about 220rwkw)...your peak power is definitely higher but i noticed that your power starts to climb alittle slower than mine even though mine's an rb20...not saying that anythings wrong but it might be worth looking into...something might be holding it back perhaps...

  • 2 weeks later...

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


  • Similar Content

  • Latest Posts

    • LOL.... a good amount of people (not all) on that continent seem to know everything and like to measure things in bananas, football fields, statue of liberties instead of the metric system lol.
    • I assume the modules are similar enough, so if you've had no issues I don't see why I would. I have tried to find a wiring diagram for the FPCM / fuel pump circuit, but I can't find it anywhere. Otherwise, I would just do some wire cutting and joining at the FPCM and give the 12 V supplied to the FPCM directly to the pump instead. If you know anyone that could help with wiring diagrams, I'd be very happy  
    • If it dies, then bypass. The task isn't difficult. I have one running on a standard R32 FPCM. That's after nearly 20 years of it running an 040, which pull substantially more current than the Walbro. They're not the same module, but I'd hope it indicates that the R33 one should be man enough for the job. I think people kill them when putting proper sized pumps on them, not these little toy pumps we're talking about here.
    • Silicone spray won't hurt anything. And if it does, that's an opportunity to put some solid steel spherical bushings in, so you can really learn what suspension noise sounds like, If you're going to try it, just spray one bush at a time, so you can work out which one is actually noisy. My best guess is that if the noise started only since putting the coilovers in, then it is just noise being transmitted up through the top mounts of the struts, and not necessarily "new" noise from bushes. But it's almost impossible to know.
    • Are you saying the 34 is SUV height, and not that we're talking about an SUV here? (because if we're talking about an SUV, you don't fix them. You just replace them when something breaks. Not worth establishing sufficient emotional connection with an SUV to warrant doing any work on one). I wouldn't jack my car up on a short little loop of 10mm steel rod poking out through a hole in the bumper bar, front or rear end. I realise that we're probably not talking about that type of loop at the front, being the one under/behind the bar on a Skyline.... but even for that one, trying to jack up on what amounts to a thin piece of steel, designed purely for withstanding a horizontal tension force, not a vertical compressive force (and so would be prone to buckling/crushing) and, my most particular bitch about it - located RIGHT AT THE EXTREME FRONT OF THE CAR, applying a load up through the radiator support panel, etc, with almost the entire mass of the car cantilevered between there and the rear wheels? Nope. Not doing that. Not on the regular. That structure out there in front of the front crossmember is not designed to carry load in the vertical direction. Not really designed to carry any load at all, really. The chassis rail that the tow point is connected to would be fine loaded in tension, as per towing. Not intended to carry the mass of the whole car, especially loaded all on one rail, with twisting and all sorts of shitty load distribution going on. No, I will happily drive up on some pieces of wood, thanks. That can only happen on driven wheels, and they are at the other end of the car, and this problem does not exist at that end of the car. And even then, I have been known to drive up on at least 1x piece of 2x8 each side at the rear, simply to reduce the amount of jack pumping necessary to get the car up high enough for the jack stands. What really really shits me about Skylines is the lack of decent places for chassis stands at either end of the car. You'd think they'd be designed into the crossmembers.
×
×
  • Create New...