hello

i have a sirius problem with me 05evo8


after 2 days in the local deal service, they dont find anyprobelm


the car feels strangled like when its boosting there is boos (nto enough the car barly pass 1.1 bar some times get 1.2)

they chack the ecu didnt find nothing all seems right all the vacum the boss pipes, the recycle blowoff vulve is also ok

the car is stock it have cat back exhust and thats it

i dont know what to do


if some one had similar probelm plz help me

tnx alot

Stas.

 

What is the problem? You are seeing slightly less than stock boost on a stock Evo. What else do you want? If you want to raise boost, get an MBC.

Btw, Sirius is satellite radio...

 

sorry for my not so perfect english......



anyway the probelm is the car when there is boost like full boost, its shows the boost in the boost geuge


but

it shows the boost, u hear the turbo but no power at all ..... at the biging it was happing some times when the car is hot during the day and in the night was ok

and with the time that pass its get worse and worse

and now it always like this


there is boost but the car have no power like it is much much much slower than usuall


we chack the ecu no errors no chack engian lamp, the injectors and coiles seems to be fine

i dont know what to chack

can it be the AFM? but there is no chack engian lamp on in the dash

 

How hot is it outside

 

Have you gone on a dyno or to the track to verify? It may just feel slow in the heat of summer. You need to verify that you really are not making any power while boosting. Otherwise, we can't really help you buy guessing...

 

there may not be too many Dyno's in his area... if there is a dealer near you take it in, all you have is a catback on an 05', you should have your warranty...

 

well its very hot here 35-38 degree

there is some dynos

and i was in the dealrs, the chack the car with the OBD and everything
chack the duty cycle of injectros, chack all didnt fine any problems.. all looks normal

and they chack all the vacum line all the waste gate the boost solonoid..

and its summer heat that make the car slow , its like realy realy slow

i mean its goes like an atmospheric car like theres no turbo at all

hard to explain but it feels like the car just dont have power i mean like half than usualy its realy realy not pulling

 

Hit the dyno to verify and try to log timing and boost while on the dyno. This will help us see where the problem is.

 

Sounds like a boost leak.

 

but if it was a boost leak the car supposed to back fire like crazy with overfulinng

and it boosts almost normaly 1.1-1.2

but the car have no power not pull

 

Check your cat, part of it is probably busted up and wedged in the rest of it blocking off the exhaust real good.

Pull it off and inspect it with a fash flash light, or replace it with a test pipe and see if that clears up your problem.

Other than that, no clue, I would think you would see a boost leak on your gauge, but I guess it depends on where it is plumbed.

 

No, a boost leak wouldn't cause what you said. It would just cause the turbo to work harder than normal and overheat while trying to maintain the normal boost levels, thus causing knock and less power.

 

Did this start happening all of a sudden? Or has it been a slow degradation of power?


buy = purchase

 

i dont have a cat , i have the original downpipe and the rest is free flow 3 inch pipe till the back muffler thats alsoo is 3 inch

 

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... Damn, you beat me to it.