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-   -   boost noise (https://www.nopistons.com/3rd-generation-specific-18/boost-noise-5671/)

tiluin 09-24-2002 10:29 AM

whenever i am producing boost, i hear an air noise that increases with the amount of boost. someone suggested that it might be a leak in the intercooler pipe couplings, yet i managed a 14.1 on the quarter, so i don't think i'm losing power. any ideas?



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Lost Time 09-24-2002 10:39 AM

Do you have a boost gauge? What is it showing? Do you hear the noise when you are accelerating as well as decelerating?

tiluin 09-24-2002 11:51 AM

no boost guage. aquiring one soon. only hear the sound when accelerating.

Lost Time 09-24-2002 03:38 PM

First place I would check is the rubber ic pipes. Take them off and look them over real good. You may want to flex them a little to see if there is a big hole in there somewhere. If that's not it you're probably going to have to track down a hose that blew off somewhere. One other place you could try is the y-pipe. Being plastic, they have a tendency to crack also.

tiluin 09-24-2002 07:15 PM

gracias mi amigos. i will check the couplings for the intercooler first thing.

turbovr6 09-24-2002 08:20 PM

also check for one of the blow off valves partially stuck open, it does happen

Fd3BOOST 09-24-2002 10:56 PM

Thats kinda what i was thinking. The blow off vales have a surge sound when boosting right before they vent. I thought there was something wrong with my car the first time I heard them. But I was getting full boost so ...

RussellTT94 09-24-2002 10:58 PM

check the rubber coupler coming off of the y pipe


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