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View Full Version : high pitch flutter at high rpms?



nycdanny
05-27-2010, 09:24 PM
Hi, I just drove 60miles from Irvine to my home in the vally in my new Evo X and noticed that in Sport mode (MR), the engine bay produces a not too loud high pitched flutter at around 5k rpms and disappears when the gear is shifted up and the rpm's drop. This happened at 4th and 5th gear. Is this normal? It's not speed related but rpm related me thinks. or the load on the engine?

ospeeddemino
06-05-2010, 04:21 PM
blow off valve?

demetry14
06-14-2010, 02:20 PM
I don't know if you already put clips on the small BOV tubes but if the one on the front left of the engine popped off like it does without clips this would happen to you.

If this is the case, you can get the hose clamps at ACE Hardware, mitsubishi should have supplied these but i guess if you drive your car soft it doesn't happen.