Wild Boost

[Guest]

Picked my vr4 up from QLD and drove it back to Melb no problems on 0.5 bar boost. (was pulled over 7 times due to the absence of plates!!)

its recently boosting as it pleases when I plant my foot until what i presume is a fuel cut at about 1.2bar. Any ideas?

 

[jet150]

Most likely due to having half your boost controller missing as you mentioned in your other thread.

 

[unclepaulie]

checked your vaccum hoses and boost soleniod for leaks?


edit, just realsied who you are, im with Rob on this one

 

[Guest]

half boost controller was missing all the way from qld but boost was consistant......

 

[frozen]

vacuum line to your wastegates somehow disconnected?

 

[wosbwm]

Can faulty wastegate also cause these problems?

 

[mills_88]

If the controller is missing it will just run stock boost so if it is boosting wildly like that id say a hose, maybe the one feeding the solenoid from the wastegate actuator is leaking/has come off.

 

[pu-11-me]

If the controller is missing it will just run stock boost so if it is boosting wildly like that id say a hose, maybe the one feeding the solenoid from the wastegate actuator is leaking/has come off.

This.... Its the only logical answer, unless the boost controller itself is going haywire

 

[Guest]

My boost has returned to normal, boosting to .5 bar. I seemed to have fixed it by turning the EVC power switch on then randomly fiddling with all the switches I could find.....

I'm am now suffering from boost withdrawal symptoms. The engine feels constipated when I put the pedal to the metal!

Need to get that EVC display/controller!

 

[fieldy107]

$30 boost controller off ebay and you can run 14psi all day long

I had to put my boost back to stock for a couple weeks, it felt like I had pulled out my turbos, it sucked

 

[Guest]

so much noise and so little output! it sucks ass.

Is 14psi all day long safe?........................i hope so...............as they say: once you go black, you cant go back.

 

[godzilla]

Ask Bradc, he has his turned up to like 20 something lol

 

[naughtika]

don't we lose our turbo's efficiency when we run past 14psi?! 12psi's more than enough to scare the hell out of your passenger, so why ask for more?!

 

[godzilla]

I am aiming for 1 bar next week and that should be well and truly enough.

AFAIK, they are still making technically effecient boost at around a bar. People like Brad and Lee can answer that as they both are running around 1.2 bar full time. Correction, Lee has a switch to run two levels.