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Help! Fludder sound

lindsey34

By lindsey34,
in Engines & Forced Induction

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lindsey34

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ever since putting on my FMIC and EBC whenever i run more than stock boost when i'm excelerating my car makes a flutter sound from the turbo side of the motor, i pulled my stock bov to check it but it seems fine, the cooler pipes are tight but i have not check the turbo outlet pipe cause i'll have to pull the other pipes off to get to it.

what else could it be, the more load the car is under the worse the flutter.

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JaFF Proficient

JaFF

Posted
Posted

not sure, but lucky its just a flutter :D

when i put my fmic in it seems to have maxed my ecu. i get a flat spot between 4500-5500 now. i'm gonna have to buy a new ecu (powerfc) or get a piggyback to fix it. much more expensive than i thought it would be :*(

TTT Grand Master

TTT

Posted
Posted

lindsey34 - from what you say, it sounds like this happens when you are accelerating rather than while changing gears.. is this correct?

if so, sounds like a surge issue. I'm not too sure on a resolution. first time I have heard this happen on a stock turbo.

Jaff - all you might need to do is change the spark plugs and gap the new plugs to 0.8mm. go buy some $4 each plugs (ngk copper ones) and make sure the gap is 0.8mm. that should fix your flat spot.

lindsey34 Collaborator

lindsey34

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still doing it the more boost the worse it is.

i'm sick of driving with stock boost might call ice and see what they think.

do you think it could possibly be the wastgate causing the problem.

you know when you excelerate how the pod makes the shhhhhhhhhhhh sound well when mine is boosted it sounds like shh, shh, shh, shh, shh, shh, shh, shh ? my brothers car has exact same mods but doesn't do it.

TTT Grand Master

TTT

Posted
Posted

no the gasket is fine.

and I still highly doubt it's the bov.

what boost does this start happening at?

like at stock it's fine.. does it do it at 9psi? or 10psi?

play around with your boost controller.

start at stock and then increase by 1psi untill it starts happening..

and when it does happen, what does your boost gauge do? does it keep rising steady or does it move around when you hear sh sh sh sh sh ???

you are using an after market boost gauge right? not working off the stock gtst one i hope..

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