hi
I have problem with my EVO9 when i but over octan in the tank
may be 102 octan with 1.6 PSI when the RPM reach 2000
I hear strange sound like woooooooo and i lose power
(my car look like lancer )
could you help me

 

The whistles got Woooo Sounds like a boost leak or your turbo is going? How many miles?

 

31250 mile
and befor 3000 mile i but the boost on 1.6bar (not by boost cntrooler ,by boost tuner)

 

sounds like a boost leak somewhere

 

First take a deep breath, and relax. Go and check all of you IC piping. Next thing after that, is take off the intake set-up. Wiggle up and down back and forth the turbos' shaft if it spits white stuff its done and you can let it go to sleep. No, seriously, just wiggle it a little, to see if there is some shaft play. Then check back with information. ...good luck!

 

I started a thread not too long ago about a noise like that and it ended up being the turbo. If you want to see and listen the video it's here:

http://s127.photobucket.com/albums/p...5102007008.flv

 

boost leak test it before you take everything off. then like said above check all the lines. also i really dont understand your statement about the octane but if you are using a higher octane then the car is tuned for then you should e using more boost. so make sure your tune is right since you arent using a BC.

patient though my friend i have learned will give you the ability to troubleshoot the problem and fix it before it gets worse

good luck