Hey all



I've ran my 40mm HKS wastegate with both vacuum lines going to the manifold and then, with only the side line to the manfold leaving the top one with nothing on it... With the one line the wastegate makes its loud noise when boost level achieved, but with both lines on the manifold it doesn't make the sound......Which is correct? BTW it NOT plumbed into the DP



Whiplash

Leave the top one disconnected. Your "loud noise" is the wastegate opening at it's setpoint. When you had both lines connected the wastegate was being held closed and your boost was still climbing.



If you're gonna be messing with that you better do some research, or your next post will be "I was racing this hooked up Type R, YO! Shiftin MAD quick! I heard a bang and now my car runs like ****! Rotaries SUCK!" https://www.nopistons.com/forums/pub...IR#>/smile.png

https://www.nopistons.com/forums/pub...1047683785.gif https://www.nopistons.com/forums/pub...IR#>/bigok.gif

I may be mistaken but the side one goes to the Blow-Of valve and the top one is for a boost controller.

No, the side is for turbo pressure. You only use the top port with an EBC.

Blow off valve has to be connected between throttle plates and engine. It has to see vacuum when you close the throttle so it will open.

Well "Tyson" if your the one pop'n motors maybe your the one who should be doing the research... Now, go and race a Honda..

He gave some good advice, no need to be sore about it.

I know I sounded like a jerk, sorry. But if you don't know what you're doing, why are you doing it? Rotaries already have a bad reputation for fragility, and a lot of that comes from people who don't know what they're doing.



Your post doesn't make any sense. https://www.nopistons.com/forums/pub...1047683561.gif

Ya know, when I added the two lines I just wanted to see how the car the car would re-act and not under heavy boost..... I have 496rwhp @ 20psi so don't make it sound like I don't know what I'm doing...



sorry for acting like a prick, its early!

You have a 20 PSI spring in your wastegate?

No, just a 10psi minimum, but I run 20psi with only one line.... I was curious on those 2 lines https://www.nopistons.com/forums/pub...IR#>/smile.png I couldn't read Japanese on the directions and really knew that the HKS w/g ran one line, but just had to see...I drove it down the block and back and it didn't make the w/g noise so I thought......hmmmmmm? and then had to ask



But again, thanks for your help

If you get 20 psi from a 10 psi wastegate, you have a MAJOR boost control problem. If everything was working right and sized correctly, your boost shouldn't rise much above 10 psi with only the side port connected.



I could see you getting 20 psi with both lines running to the manifold like you described in your first post...

So what is the correct way to have the lines? and if I had only the side port to the manifold why would it only be 10psi minimum?

If you don't have an electronic boost controller, you would only connect to the side port, connecting the line between the turbo and throttle body.



A 10 psi wastegate spring begins to open before you get to 10 psi, hopefully so it will be open enough to prevent you from going over 10 psi. If it is big enough to flow enough exhaust, you shouldn't creep beyond 10 psi, no matter how much load or how high RPM you go.



What turbo system do you have? I'm assuming it's an HKS kit, because of the HKS wastegate?

The turbo is a Garrett T60-1 .70 comp. w/ 1.15 A/R



But if the manual (turbo XS) control is @ say, 13psi the spring still starts to open @ 10psi minimum but it will continue because of the control

OK, you didn't say you had a boost controller. With a manual boost controller, the wastegate still starts to open before your setpoint, but not much. You can raise the setpoint quite a bit above the wastegate spring. It connects in the hose to the side of the wastegate and restricts the amount of boost the wastegate sees. The wastegate still sees 10 psi as its opening point, but the boost in the manifold is really 13 psi, or 20 psi, or whatever.

Were on the same page now https://www.nopistons.com/forums/pub...IR#>/smile.png ....E-mail is so impersonal....But everything you said is correct and is the way I have it....



Thanks