Running No Boost Controller On New Setup

[R33GOD]

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

[R31Nismoid]

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

[R33GOD]

this time i wont be boosting more than 15psi. so if it does boost creep whats the worst it would do with the hks actuator?

[R33GOD]

has anyone done the same and what were your results?

[green 33]

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.

[limpus]

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...

[R33GOD]

dosent fuss me if i lose some midrange. id rather that than getting an epa. car went awesome before hand. if it can do 90% of what it did il still be happy

thanks for your input guys

[DjeMz]

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?

[green 33]

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

[limpus]

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...

[R33GOD]

the most il run is 15 psi. i think it should be fine. if i run into some troubles il get some sort of boost controller

[silva33]

i think you will notice it quite a lot without a boost controller.. I did the same as you and without the boost controller helping the turbo spool the car felt less responsive.

[DjeMz]

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...

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?

[DjeMz]

also as u can see, boost spikes a fair bit...

[limpus]

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...

[DjeMz]

has anyone got a link for the gizmo boost controller