2000 legacy b4 acceleration problem

[ANTZB4]

Hi guys just got a 2000 legacy b4 done 144 ks had a new engine with 81ks put in stock apart fron a stupid bov! anyway my problem it will accelerate upto about 4500rpm and seems to be making boost but past that its almost like it runs out of puff and cant accelerate much more. what could be faulty boost solonoid,air leak??? car is great apart from that

[Joker]

welcome : sounds a bit like 2nd turbo is poked?

check the codes

info is in this thread how : http://www.clubsub.org.nz/forum/index.php/topic,58.0.html

or could be twin turbo system error likely a code 66/a solenoid in the BBoD

[subieboy]

 JoKer said:

welcome : sounds a bit like 2nd turbo is poked?

check the codes

info is in this thread how : http://www.clubsub.org.nz/forum/index.php/topic,58.0.html

or could be twin turbo system error likely a code 66/a solenoid in the BBoD

+1

[ANTZB4]

Ok engine was put in last month old owner gave me all the paper work, worth me ringing.up the company and giving them a ear full? Il check the codes after work

[Guest]

go on, call them up give them an earfull about someting you know nothing about !! - fail !

Try the diplomatic approach with them, say car doesnt seem right, and appears to have no secondary boost

[slystiguy]

might not even be the mechanics fault maybe just an unforeseen problem that wasn't there when it left, second hand parts are a bitch like that, id check codes an report back

[ANTZB4]

Lmao ichi ban that's what id do say its not right not give them a earfull in the literal sensr. Weres the factory boost controller/solonoid located on the b4s?

[Joker]

inside the Black Box of Doom! aka BBoD

as previously mentioned

drivers side strut tower

edit

pics

 ReubenH said:

Right, onto the Black Box of Dooooom! Oh noes! ... It's actually pretty simple really... Jason showed me the pic below when i had to do it, it's really all i needed. Basically make your solenoid box look like the one below, and you're set. Now, in the shopping list i said to get a "*Single turbo solenoid bracket" and "*Pressure select solenoid". While you don't have to, it just makes the TT conversion that much more complete. The bracket i said to get for obvious cosmetic reasons, the solenoid, just so you can lose the big whore of a plug with a mess of wires coming out of it that you won't using any more. The picture of my end result shows this well (thanks cameron for the wiring on that one)

[Joker]

you can also see the BBoD in the 5th pic down in this thread : http://www.clubsub.org.nz/forum/index.php/topic,26285.0/topicseen.html

[ANTZB4]

Wellllll.......UPDATES, Got a new bbod, and discovered some @#$%&* had glued a vac line up so sorted that and put in the new box but nope:( still has its issue soon as i get upto 5000 rpm the car just wont accelerate any more. any ideas? other wise into the shop she goes next week

[DRFVDR]

are u getting a CEL coming up as it seems to me it is going into limp mode

[Jord]

I would suggest running the car in diagnostics mode. I can't recall the exact sequence but basically you will need connect the green and black plugs under the dash (drivers footwell) with the ign. off then turn on the car. This will cause all the solenoids in the BBOD to activate (you will hear them clicking) these will then sequence the movement of the Exhaust Control Valve (ECV) and the Intercooler Control Valve (ICV) if these fail to open/close then you have a problem. Either of these failing to work will give you no secondary boost.

If what I've said just went straight over the top of your head I suggest you learn how the TT system works..

http://www.veloce.pwp.blueyonder.co.uk/Twin%20Turbo%20Operation/ttopprt2.htm