I have a basically stock IX and lately it's been making a fluttering sound that I'm almost positive is compressor surge. I put a BR filter on at 3,685mi, but I just started hearing the noise @7,000mi.

Is this normal? I'm tempted to take it to my dealership, but they're hacks. They'll probably tell me to put my airbox back in, and I'm guessing you won't hear anything then. I'm just worried it's going to cause pre-mature turbo failure.

It's been colder lately????

 

when does it flutter, in 5 gear?? because that is normal, also do u have the mr diverter valve still on??

 

sorry for the newb question. what is a mr diverter valve?

 

bov diverter same thing.

 

I still have the stock ix bov. I usually hear the fluttering when I go from WOT to part throttle, I hear it when parking as well sometimes. (think k-turns)

 

what you are hearing more then likely is the recirc from the BOV that you couldnt hear before because you werent running an open ended filter

 

But I've had the filter on for over 4k mi. I've just started hearing it the last couple of hundred.

 

getting colder there ? running lower boost maybe ?

 

It's definately been colder, but I'm running more boost if anything. My car pulls real hard when it's cold, as far as stock IX's go.

 

The Flutter is normal, EVERY evo IX i have seen with an intake and the stock DV on flutters.

 

evo8 flutters too with intake and the jdm bov.

 

+1 my VIII does the same thing w/ the MR diverter and Buschur intake, its normal. Its really noticeable when you get off the throttle at partial boost or load.

I think its just more noticeable w/ the open filter intake.....

 

It is normal per driving habit. Did it on my VIII & now my IX is also doing it.

 

Are you talking about the turbo itself fluttering??? Instead of it making a smooth spool up sound like "tsssssssssssss", it goes "tsss tssss tsssss tssss tsssss"?

And I'm not talking about a BOV sound, its the turbo itself making the sound.