Best Boost Controller

[Adrian_GTR]

Hi everyone

I was hoping to see if anyone could help me out on the forum,i have a 2000 model R34 GTR and am in the market for an electronic boost controller.

Just wondering what would be the best one.......in the near future i'm hoping to be putting out around the 400awkw mark i have been checking out the HKS evc boost controller but don't know if it works well with the GTR's? any help or personal experience would be great thanks.

[R31Nismoid]

You don't neccesarily need one.

Seen many a 350-400rwkw car hold 20-24psi flat without one.

But if you must have one, anything with dual solenoid is what you want.

[paulR32gtr]

Good old bleed hole works a treat on GTR's.

I had a $600 odd AVC-R that just didn't work - workshop ripped it out and replaced with a piece of alloy pipe with a hole drilled in it off the wastegate lines. Bigger the hole higher the boost.

Holds 17psi perfectly (GT-SS ~14psi actuators)

I do hear the newer dual solenoids are much better as Ash mentioned, but no point if it can be done for a couple of bucks. Is also tucked away out of sight, no screens and wiring harnesses to install etc.

[paulr33]

as ash said you only need a good controller if you want to run MORE boost

if you get the right sized actuator spring or external gate spring at the desired level then that's all you need

no need for a $500 controller. its only if you want to bleed MORE boost over the minimum target level that you need a controller

the higher priced controllers usually offer scramble, dual solenoid, fancy displays etc

if you insist on a controller dont get a 14psi spring and try to run 27psi

its too much work for the controller and it will struggle, try and size the spring according to your minimum target level

ie if you want to run 19psi all the time, then get a 16psi spring and bleed 3psi

[Adrian_GTR]

Thanks guys for the quick reply's

The main reason i want to install the boost controller is because i want to be able to control a high and low setting hence dual stage.

I had a Greddy pro-fec b 2 in my tt supra and i liked the fact i could drive around on 10psi all day then when i felt like giving it a boot full i can switch it over so it has a max of 16psi thats all.....Wanted to get something similar but was not sure if their was one that worked really well with the RB26

[R31Nismoid]

You can control that with your right foot mate

I run 20psi day in, day out with 365rwkw

I can get over 600km's on the freeway if I want.

[Adrian_GTR]

LOL good call......

[BrynDETT]

dont see how the evc wouldent work with gtrs? working for me..

[SimonR32]

Blitz dual solenoid (either spec-r or sbcid3 etc) are the best

[GTScotT]

Speaking from experience alone, went from a pos his evc5 in my evo to a profec b spec 2 and was far happier.

Also went from blitz SBC to turbotech in a 32gtr with factory position twins and was also MUCH happier.

The turbotech has never disapointed nor failed. The profec is also quite a nifty toy with a couple of valuable features for a lightly modded car.

Be it myself I would do the right foot boost control with actuators set as close to target as possible and a turbotech for added confidence on spool and gate creep.

[luvpsi]

or if you are running a aftermarket ecu that controlls boost run a boost solinoid and use the ecu for boost controll

[Beer Baron]

best value is profec B II. they work fine on GTRs and are cheap and easy to use.

best outright is either HKS EVC 5 or the BLITZ dual SBC ID3. both very good but more costly.

as the guys said if you want say low boost of 18psi, get 15psi actuators and bleed 3psi, then for your high boost you'll have to bleed a bit more. I can understand wanting 2 boost levels, nothing wrong with that. and the best way to get that is with an EBC. either of the 3 above should give good results. I've used all 3 (and others) personally in my cars.

[SimonR32]

I have a profec b spec II in my car at the moment, it works great (was cheap second hand) and has 2 boost levels but I feel that the Blitz dual solenoid ones work better at holding boost dead flat, plus the Blitz ID3 has 4 settings.

I have also used Turbotech bleed valves on various cars and once they are set up (they can be a bit fiddly and sensitive) you seriously can't beat them for price. Only issue is they only have one boost setting.

Edited March 29, 2011 by SimonR32

[Adrian_GTR]

Awesome feed back thanks guys!!!

[dontfeelcold]

Whats the go with EBC's claiming that they can bring the boost on earlier by the way they control the wastegate?

[R31Nismoid]

They only do if the gate is creeping/opening early.

I used to experience it with my external as an example

7psi spring - 17psi bleed. Gate would "creep" open before 17psi.

15psi spring - 2psi bleed. Gate would remain shut until 17psi

Sometimes internal gate setups suffer this also as the gate is much smaller (eg ext 45mm, int 25mm).

But it varies and is influenced by quite a few things including dump pipe, exhaust restriction, lengths of vac hose/where you are referencing boost etc.