I checked a lot of things but still can't figure out the problem
Evolution IX MR currently boosting 0.7 Bars

Things I checked
-Boost gauge, the OEM one seems working changed to another boost guage still boosting the same
-Reset the ECU, doesn't seem to work either
-Check for any leaks no boost leak what soever on the car

Previous owner had a Injen piping and Intake pipe Apex-I intake. 550 RC Injectors and also Cosworth cams. Its also running a stock ECU with no tune yet.

Things I haven't check is the boost actuator

If anyone has or experience the same problem please let me know ! I can fix the problem but i need to know where the problem is coming!

 

Intake pipes in nice and snug and tightened down with t-bolt clamps?

 

i've had the same problem and it was the stock boost control. i changed it for an mbc and now it's fine. check that first.

 

They are tighten down, its just stock clamps....

so its not the boost actuator ? because i may play around with it tmmr to see if thats the problem as for the MBC question, why would the stock boost control is low? isn't stock boost should be around 1.1 bar?

 

i took mine to the shop and did a boost leak test and everything and the only thing that wasn't working correctly is the stock boost control. i'm not sure if that's your problem. check just in case.

 

Check your wastegate, the flapper could be stuck open.

 

Make sure you check your intake & exhaust manifold gaskets as well...

 

Check the waste gate...turn the knob only got 0.9 bar PSI and its turn to the tightest.

also check the intake and exhaust manifold nothing seems wrong.

 

If you have a suspected boost leak check your injector seals, intercooler/piping, boost controller, throttle body gasket, basically just spray the entire intake track down with soapy water while pressurized. How are you doing the boost leak checks?

 

basically check everything, i dun have a boost controller thats the thing i haven't tried yet..i will order one and see if it'll work thanks!

 

if the injector seals were leaking would you smell gas?

 

Not really, mine had leaking injectors seals when I first bought it, only way I knew is that there was wetting and dirt stuck to the wet area. Its not that they will be spraying out, plus the injectors sit down in the intake mani most of the gas is being sucked or blown into the combustion chamber. If you don't believe me just do a search on leaking injector seals, you will see what I'm talking about.

 

Does it have a manual boost controller installed? If the previous owner had cams he probably had a MBC on the car and if it was taken off then the lines going to the stock boost control soleniod probably don't have the stock boost pills in them anymore... which would also lower your boost.