Evo 8 WG

[Evo-R]

Hey guys..

seems like my wastegate is giving up.... boost set to 1,2 bar but it wont boost
more than 0,7 bar...

Is It difficult to replace..??

Found a new on ebay, set to 1,2 bar.. just for 45 pounds.. from Japan
Turbo Actuator Internal Wastegate MITSUBISHI LANCER EVO 4-8 18 psi 1.2 Bar | eBay



best regards: Tony M

 

[DDS789]

It can be tricky. Have you pin pointed its the actuator? As it could be a leak elsewhere?

They are available everywhere mate not just Japan. Try places like indigo gt, rossport and many others.

 

[RsvRob]

That won't be your wastegate as that is 0.7
If it was giving up then you'd overboost. It's more likely your 3 port or your settings have changed. How are you controlling boost??

 

[fq-craigus]

Or a boost leak

 

[DDS789]

My actuator gave up and leaked boost, diaphragm split

 

[Dirtmatt]

Actuators aren't cheap.. So I'm finding out lol.

As said check for leaks first and if it is the actuator stick to the known places.

 

[DDS789]

Mine turned into a new turbo :shock: not to cause panic lol

 

[Dirtmatt]

I have one of them lol..

 

[Evo-R]

Ok thx guys.. I checked all the vacuum lines yesterday, and Will go out on à run
Today.. I controlled the boost with a mbc. Byt then i took it off cause I felt the car was getting like a little boostcut when I boost fast to 1 bar.. It felt alittle like a missfire. Running
Bpr7eix now.. Dont know if they are ****ing up.. So i threw mbc away and went stock.. Then car boosted 0,7 =)

 

[Dirtmatt]

Ok thx guys.. I checked all the vacuum lines yesterday, and Will go out on à run
Today.. I controlled the boost with a mbc. Byt then i took it off cause I felt the car was getting like a little boostcut when I boost fast to 1 bar.. It felt alittle like a missfire. Running
Bpr7eix now.. Dont know if they are ****ing up.. So i threw mbc away and went stock.. Then car boosted 0,7 =)

Stock actuator pressure should be 0.8 bar.

Nothing against you here bud but how have you plumbed the stock boost soleniod in? Ie it doesn't work the same why as say the mbc would have! If you have it running a pipe in and a pipe out it won't work. It runs one off the turbo casing with a t to the actuator. The other comes off the intake pipe.

 

[RsvRob]

So now we're getting to the bottom of what you've actually done.
Plumbing direct from turbo to actuator will give you 0.7-0.8 bar. Dependent how accurate your gauge is. So there should be nothing wrong at all.
Unless the stock solenoid has been plumbed in wrong. In which case you'd be better of downloading the manual to see exactly how it should be reconnected.
I would also be running bpr8es gapped to 0.55 rather than the 7iex ones you have.
Hitting fuel cut is about 1.5 on the 8's as they are usually set to 1.2bar

 

[Dirtmatt]

True gauge could be that difference

 

[Evo-R]

Well my car boosted stock 1,3-1,4 bar and then went Down to 1 bar.. Then i deciderad to put boost controller just because i didnt want it to boost 1,3-1,4.. =) so yesterday i checked the lines so its all stock and swapped out the T-piece to a new.. And today I'll test it.. Wish me luck =)

 

[Simon@NTS]

I can take a look if needed mate

 

[Evo-R]

Now she works fine again!! Boosts fine and steady.. Me happy =)

 

[Dirtmatt]

Job done mate..

 

[Evo-R]

Yeah .. Feels great.. The only thing i did was to replace the old T-piece.. And tighten
All the hoses and make sure it's steady =)