ok i have a 95 240sx, SR20DET swap. red top. i am looking at turbo timers, boost controllers, and blowoff valves. so far i like the hks ssqv blowoff valve and hks turbo timer type-1. liking them allot but cant really find a manual boost controller. well to my application. any help would be greatly appreciated.

they have manual boost controllers on ebay...the one im talking about is like 90 bucks...not the $8 ebay ones...i have the khs ssqv...love it...i recommend the greddy type-s boost controller...simple but works

Buy an HKS actuator instead... fairly cheap and not gonna creep or spike like a manual.

yea i have heard good things about the hks SSQV. im thinkin about getting the turbo xs type H BOV. but not the RFL cause the RFL is way to loud for my taste

i had the HKS SSQV i loved it

manual boost controllers i dont like to much, i second the actuator

as for the turbo timer, i dont really think it matters much nowadays, they all do the same thing properly, just somt of them have more options and what not

like one of the blitz's has a boost gauge

i used a hks evc boost controller, found a used one on ebay that still worked good

I dont know what an actuator is so whats the difference between an Actuator and a Manual Boost Controller...The manual boost controller is the electronics inside your car that you can set the Boost level at...and the actuator im guessing is some kind of physical device that you can adjust?

An electronic boost controller is the little box with lights and buttons inside the car, a manual boost controller is just mechanical, I dunno what an actuator is either...lol I'm guesing it goes with the wastegate.

i love the HKS SSQV...and if you are wanting a MANUAL boost controller...go with the Turbo XS...can find tons on ebay...if you dont wanna spend around $400 for an electronic go with the Turbo XS manual for about $80-$90

hks ssqv on a sr isnt good, it doestn re-ciruclate, which cause the car to back fire when the bov sound and have a weak idle and some time stall at lights.. that on a sr motor.. its still a damm nice bov tho i have it on my probe.. i cant complain..

1

never heard of a actuator. lil description in here. would like to know more. and i heard allot about the ssqv from hks but first time i have ever heard about what it does to a SR, turbo2nr. i'll have to check on that, how does it work for you driftking777. well i got the hks type 1 turbo timer. it has a few lil features i like. and if i am cool with spening around 200 on a boost controller anybody have any suggestions? and staying on the tuning and upgrading subject where should i go after these upgrades? thanx guys for all the help. i really appreciate.

An actuator is a unit that holds the internal waste gage shut till the proper boost is established, and then it opens. Hence, remaining a constant pressure in the turbine. It will always maintain the pressure.
It’s a cylinder with a arm that if u shorten it, u increase the boost.

The actuator, looks like cylinder with a height of approximately 2 cm and a radius of 1cm. and has an arm that is connected to the center of it and extend to the waste gage.
The arm pulls away from the cylinder as boost build up in the turbo. Depending on the length of the arm, the actuator will hold the waste gage shut till it reaches a particular psi, where it will finally open. (Adjustable arm length = adjustable boost, stock actuators have FIXED arm length)

The actuator is rested on the intake side of the turbo (cool side). The arm is extended toward the manifold side turbo (where the waste gage is at)

Because it’s controlled via a vacuum chamber, (inside the cylinder unite) the boost will always be released when the pressure of the turbo overcomes the pressure of the cylinder unit. Hence the arm extends away from the cylinder unit and opens the internal gage in the turbo.

the Hks ssqv in my car is great...i have nothing but good things to say about it...

Greddy profec B. Easy to use.
If you vent any blow off valve to atmosphere, it will stall easily, possibly backfire bad, sound cool, and thats about it. Recirculating it makes the car much more drivable. No stalling issues and a perfect idle.

Recirculating=route air vented from your blow-off valve back into the intake between the turbo inlet and the mass air flow sensor. The problem is that when air is drawn into the turbo and pressurized into the engine, the MAFS meters that air. When you let off the gas, the throttle body closes and creates vacuum in the intake. The vacuum opens the blow off valve allowing all the metered air in the pipe and some that is still being drawn in to escape into the atmosphere. The ECU is completely unaware of this so it is dumping fuel for all that air. Well it isn't there so you get an extremely rich mixture that stalls your engine if you don't pedal it. Very annoying. I run VTA right now and its not a lot of fun. The only positive thing about it is that you can attract attention very easily.

thanx AWDSR20, all that info is very helpful. i think i will go with an hks vbc. adjustable from the cockpit. an actautor sounds a lil to hard for me to use. and nissanfanatic, i dont understand you own a 240 and it sounds nice, with a blowoff valve. but there is more to a blowoff valve than that. i used driftking777 advice and went with the hks ssqv. bought it today, bought the hks type 1 turbo timer 2 days ago and will be lookin for a boost controller today. i like the hks vbc. but am lookin into more options similiar to that specific unit. anyone know something about that, profec b. i wasnt lookin into any electronic boost controllers. but that is cause i was told that if i was lookin into getting one that not to get a elec. unit. does anyone know why? and should i just get a electronic unit?