boost pressure question......

[Violator]

Hi all...........had a couple of mates round tonight and there seems to be some discrepency in both the e4's turbo boost. The first e4 is standard and the one with the problems has been played with but we dont know to what degree.
Problem is...........the e4 that has been played with dosent seem to have the same kick when the turbo kicks in as the other e4.........could this b a prob with the acctuator maybe?
Is there a simple way to test the boost pressure?

[terminator]

Anyone out there got some idea's?? This is for Edo's monster thats lost a bit of its roar.....

[user1482]

To check the boost pressure, you will need a boost (or other pressure) gauge T'd off from either the fuel valve or dump valve feeds on the manifold.

Section 15 of the workshop manual http://www.lancer-evo.net/community/...le&file_id=521 tells you how to test the actuator, dump valve and secondary air system.

If these are OK but the boost is low, it could be that someone has tried to increase the boost by removing the grommet but taken the wrong one out. There are two, one in the line from the turbo nipple to the T piece and one in the line to the bleed solenoid.

Removing the one from the bleed solenoid will up the boost but is apparently not a good idea. Removing the one in the line from the turbo nipple will make the actuator open sooner, reducing the boost.

Cheers,

Simon

[terminator]

Chrs for that, Edo's original pipework is long gone, nothing exists. It looks like someone has fitted a HKS boost controller but later on removed it. The HKs controller was there & the valve controller but some of the wiring harness was missing so nothing works. All the pipework was replaced with large bore tubing and the boost solenoid blocked.

Sounds like he needs to get replacement tubing with the correct reducers etc???

[user630]

Might also be worthwhile to check the actuator as they are known to stick which can cause a massive reduction in your power/boost.
hope you get it sorted

[user1482]

Originally Posted by Terminator

Chrs for that, Edo's original pipework is long gone, nothing exists. It looks like someone has fitted a HKS boost controller but later on removed it. The HKs controller was there & the valve controller but some of the wiring harness was missing so nothing works. All the pipework was replaced with large bore tubing and the boost solenoid blocked.

Sounds like he needs to get replacement tubing with the correct reducers etc???

No problem .

Have a chat with AMS http://www.stationgaragearnside.co.uk/.

They have a IV and a VI in for breaking. I expect they'll have the original kit.

Failing that get a Dawes device manual boost controller or another electronic one, then you won't have to worry about refitting the standard stuff.

Cheers,

Simon

[Rich@RGMotorsport]

if he has a pipe running from the turbo nipple straight to the actuator he should run about 0.8 bar. if there is no pipe going back to the actuator at all then it will hit about 2 bar

Originally Posted by RichEvo4

if he has a pipe running from the turbo nipple straight to the actuator he should run about 0.8 bar. if there is no pipe going back to the actuator at all then it will hit about 2 bar

2.0 bar :shock:

[Rich@RGMotorsport]

Originally Posted by bazza

2.0 bar :shock:

yup, with the actuator effectively jamming the wastegate shut the turbo will make anout 2 bar (ecu allowing of course )

[terminator]

Chrs for that, he does have pipework, but its individual large bore pipes to the HKS unit. There does seem to be a bit of boost coming up the turbo pipe, but I'm guessing the actuator might be dodgy, i.e. open thats bleeding boost.