Electronic boost control question

[WRXONP]

After watching a few cars on the dyno running boost solenoids you can see on the graph that the boost is anything but stable ? Is this the solenoid cycling ? Am wanting to know if an after market controller on an external gate would do the same or would it be stable ?

[Pappu1]

u can get smooth boost with factory solenoid as well bro - just needs to be set correctly

see blakes psi graph and u will see its smooth

an electronic one tho is easier to set and get a smooth stable psi as its fairly smarter - depending on which sort u get

have seen it stable both on internal and external

but once u put a proper electronic one u will have the best setup using the external and im sure hols boost very steadly

cant wait to see ur one next dyno as looks like u have some good plans for it.. ;D

[WRXONP]

Ha ha yeah I remember now blakes was as smooth as silk ha ha . Hope mine looks like that next time ha ha . Yeah mate plenty of mods I wanna do

[Pappu1]

 WRXONP said:

Ha ha yeah I remember now blakes was as smooth as silk ha ha . Hope mine looks like that next time ha ha . Yeah mate plenty of mods I wanna do

what electronic one u getting?

[WRXONP]

Not sure yet will be sorting it when I get home

[Pappu1]

HKS evc4 at a minimum

they are good as from past experience and have a rock solid boost hold

but if u want gear based psi control then get something more exotic

[rex-leggy]

im after a controller also .

im guessing a electronic one has many advantages over a tap

[WRXONP]

my tap pulled up pretty awesome on the dyno... but it is on an external wastegate...

[Pappu1]

Have used both tap and electronic

If u want just a single boost level and have got moderate levels of psi then tap works very well

Electronic ones seem to hold higher boost levels better but maybe not good to force turbo too hard

Electronic ones claim to bring in boost earlier but for the difference in price a tap is not that bad anyway

Electronic ones are best if u want something more sophisticated like gear based controller

Anyway in summary a tap is good for what it does and can do 90% of what a electronic one can FO a fraction of the price

If u are pushing closer to turbo limits then get electronic else Tap is sweet

[WRXONP]

i got a second hand evc4 bro you reckon theyre any good? easy to setup? want it to hold 18psi LOL

[Pappu1]

How much u scored that for bro

They are very good and easy to set

Seriously easy to set and soooo hold boost rock solid

Have had that on 2 different cars and fitted to few more and always have had very good boost control with them

Download the manual from net or let me know and can send a link

And ya they have a switch for external gate and all

U will love it bro

[rex-leggy]

http://www.scribd.com/doc/18659634/Evc4-Manual

[WRXONP]

yea fellas cheers

got a PDF of the manual off the HKS website...

cant wait to set it up haha

[Pappu1]

 WRXONP said:

yea fellas cheers

got a PDF of the manual off the HKS website...

cant wait to set it up haha

All the best bro

Hahha how strange to be here at this time of night lol

Anyway mate u will just love it ;D

[WRXONP]

haha got a question though bro

Since the HKS evc4 runs in KPA i still want to run my PSI boost gauge...

it says in the instructions to run the map sensor for the EVC (to read boost pressure) should run off a non interupted vac line from the intake manifold??

i have run out LOL i have one port for the fuel reg.one port for the ecu map sensor.one port for BOV and the other port for the boost gauge...

what shall i do about this LOL can one be tee'd up and still function all good??

[Drunkenmonkey]

Just t into the map or gauge

[Guest]

my boost gauge reads off my map.no problems there.

[WRXONP]

Yeah but that does alter what the map sensor sees . . . I put the evc onto the boost gauge line . . . Shit it makes a difference aye . . Easy as to set up too

[Guest]

ohyeh mean what boost you got it set on.notice any performance diffrences

[WRXONP]

About 18 psI bro . . . . Shit yea mean difference . . . It spools allot easier and when you plant it the boost comes on allot faster and just hits peak boost and holds it strong as . . . So easy to install and to set boost is too easy lol . . Definitely recommend these for any one who wants a electronic boost controller thats not real confusing

[rtstk]

 WRXONP said:

About 18 psI bro . . . . s*** yea mean difference . . . It spools allot easier and when you plant it the boost comes on allot faster and just hits peak boost and holds it strong as . . . So easy to install and to set boost is too easy lol . . Definitely recommend these for any one who wants a electronic boost controller thats not real confusing

mean bro. carnt wait to c it in action hahahaha

[Guest]

thats algood then.did you watch you gauge on boost?did it spike or just hit 18 and stay there.

[WRXONP]

It hits around 1.2 bar on the digital display and only drops around 0.05 bar through the whole rev range . . And I get 1.2 5 to 1.3 bar in 4th gear . . . The boost drop of 0.05 bar isnt noticeable on the boost gauge but you can see it on the digital . . . . . But my lines are quite long . . Im going to get a niple put in the piping closer to the waste gate so that the hoses are allot shorter but it still controls really well the boost comes up really fast and hits peak hard and holds strong

[rex-leggy]

nice mate! do u know where to get another 1?

[Pappu1]

Good stuff bro

Gotta admit it's bloody good ay

For set and forget control cNt think of any better in terms of setup and use

Try and set the scramble mode to say 19.5 and use that only in mid range

J will love the hit it brings bro

Can add external trigger on scramble mode so makes it real easy