whistling noise in 4th and 5th gear
#1
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Join Date: May 2004
Location: Livermore, Ca
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Car Info: WRB STi Hatch, JSW Diesel
whistling noise in 4th and 5th gear
i am currently running a stage 1 map from the accessport, and i noticed that when im hitting full boost in 4th or 5th gear and get to around 100mph, the boost sound would get 2 times louder. im kinda stumped on determining what this sound exactly is and what it causing it, because i am watching my boost gauge when this happens, and i do not see a drop in pressure. the sound will only happen when i hit full boost in 4th or 5th gear going around 100mph, and it will go away right when i get off the gas, and will only happen again if i give it full throttle and it builds up to 14.7 psi of boost again.
anyone else had this problem before?
anyone else had this problem before?
#2
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Car Info: WRB STi Hatch, JSW Diesel
im not sure if it is an uppipe leak either, because if i recall correctly, if the uppipe is leaking, it should be a whistling sound right? the sound i have coming out of my car is definately not a whistling sound, it just sounds like the boost getting two times louder
#5
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Location: Downtown oakland
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Car Info: civic
Originally Posted by Boost Addict
I second this... did you accidentally get an oil change @ Honda? They hooked you up man... Yay for VTEC
wow that was quite helpful. what an idiotic reply.
i think calling cobb is the best solution as of right now.
#7
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Location: Sacramento CA
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Car Info: 02 Impreza WRX sedan
Origami posted by dynamicprojeKtz
im not sure if it is an uppipe leak either, because if i recall correctly, if the uppipe is leaking, it should be a whistling sound right? the sound i have coming out of my car is definately not a whistling sound, it just sounds like the boost getting two times louder
im not sure if it is an uppipe leak either, because if i recall correctly, if the uppipe is leaking, it should be a whistling sound right? the sound i have coming out of my car is definately not a whistling sound, it just sounds like the boost getting two times louder
In your post you say that there is "not a whistling sound", but your thread title reads, "whistling noise...".
'Boost' itself does not make a sound. Do you think that what you hear is more likely the rush of intake air or the sound of exhaust becoming louder?
Please list other mods done to your car.
--
0==WW==0
"…axles of evil…" - george w. bush
#9
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Location: Sacramento CA
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Car Info: 02 Impreza WRX sedan
You might check the IC hoses to make sure a leak hasn't developed. It's only a guess as to why the noise doesn't get louder in the lower gears but in 4th and 5th gear, there is much greater load on the engine.
A common uppipe leak occurs when the engine is cold but goes away (for me, at least) after driving for about ten minutes and things heat up. It's really noticeable as a 'shrieking' noise when the engine gets into any sort of boost in any gear.
--
0==WW==0
"…axles of evil…" - george w. bush
A common uppipe leak occurs when the engine is cold but goes away (for me, at least) after driving for about ten minutes and things heat up. It's really noticeable as a 'shrieking' noise when the engine gets into any sort of boost in any gear.
--
0==WW==0
"…axles of evil…" - george w. bush
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