Ralph Wiggum Moar Powar Babeh Lifetime Members 19,323 Member For: 19y 1m 22d Gender: Male Location: Perth Posted 18/12/06 11:59 PM Share Posted 18/12/06 11:59 PM (edited) quiet on gear change(manual car)Mine must be a freak of nature then. haha←WHAT WAS THAT NEWL...? i cant hear over the flock of turkeys having an orgy under my bonnet every time i change gears... But seriously its supprising how loud you F6 is for a stocky... Edited 19/12/06 12:01 AM by hiddeous Link to comment Share on other sites More sharing options...
Guest newl Guests Posted 19/12/06 12:00 AM Share Posted 19/12/06 12:00 AM Yeah, no arguments there. I reckon it is a bonus from it being a preproduction vehicle as the odds are there may be things that just aren't quite the same as on normal production cars. Link to comment Share on other sites More sharing options...
IH8TOADS Silver Donating Members 3,618 Member For: 19y 4m 6d Gender: Male Location: OZ Posted 19/12/06 10:02 AM Share Posted 19/12/06 10:02 AM Yeah, no arguments there. I reckon it is a bonus from it being a preproduction vehicle as the odds are there may be things that just aren't quite the same as on normal production cars.←id say its your K&N and 2nd air intake newl, unless it's always been like that.Cheers Link to comment Share on other sites More sharing options...
sh3p Member 69 Member For: 18y 9m 18d Location: Melbourne Posted 19/12/06 10:48 AM Share Posted 19/12/06 10:48 AM Hey guys anyone got a link or pic for K&N Pod filter?Would like to see one in the metal... Link to comment Share on other sites More sharing options...
Guest newl Guests Posted 19/12/06 10:52 AM Share Posted 19/12/06 10:52 AM Yeah, no arguments there. I reckon it is a bonus from it being a preproduction vehicle as the odds are there may be things that just aren't quite the same as on normal production cars.←id say its your K&N and 2nd air intake newl, unless it's always been like that.Cheers←It's always been like that. =D Link to comment Share on other sites More sharing options...
4ST-XR6 Member 58 Member For: 18y 2d Posted 19/12/06 09:31 PM Share Posted 19/12/06 09:31 PM This backs up the arguement that the BOV isn't designed for longevity of the turbo.Please correct me If im wrong. From memory, the BOV on the xr6T is indeed plumbed back into the intake stream before the throttle butterfly, so when the pressure rises in the intake stream after the butterfly closes the pressure in vented through the BOV and back into the intake pipe. There are two lines off the BOV on the xr6t, I imagine the smaller one that goes to the manifold serves a similar function to the vac line on the fuel pressure reg, in that under wot when the pressure in the manifold is positive, and hence requires greater pressure on the opposing side of the diaphragm ( the intake pipe before the butterfly) and the larger line of the two is the passage the air takes back to the intake pipe. And if the BOV is for emission purposes, can you please explain this to me: On closed throttle, the excess boost is vented, in the case of the falcon which has a T-MAP sensor, Temperature and manifold absolute pressure sensor is on the opposite side of the butterfly in the intake manifold, and hence wont measure the exra air from the turbo due to the throttle butterfly being closed. So I supose what I'm trying to say is in terms of a falcon with the T-MAP sensor what is the purpose of the BOV?, if it isn't for the turbo longevity as staged or for the Emission reason theory of mine then why is it thereLike is said please correct me if im wrong, and please pm your answers to me, Its got me thinking now and I won't be able to sleep. hahacheersMic←There are three lines on the factory BOV as there would be on any plumb back bov. The line from the manifold to the BOV (pressure) , the vac/boost signal (the small line) and the vent line (the line that runs from the bov back into the intake duct.) The BOV keeps keep the car quiet on gear change(manual car) and when the throttle is released( manual and auto car) and also helps improve fuel consumption. The factory BOV allows air to pass through it when the car is at cruise and there is vacum applied to the BOV piston. The allows the engine to draw air in through the bov rather than through the turbo.This also allows for a slightly quicker spool up of the turbo once the throttle is open because the engine already has a small supply of air entering through the BOV that helps provide extra exhaust gas to get the turbo spinning. Im not sure with the design of the turbo on these cars and the super low boost they run from the factory that the BOV is meant to provide protection for turbo longevity.About your question about the emission side of things. dont forget there is a t-map sensor as well as boost sensor located under the rh head light in the intake ducting. I would assume the car knows what pressure it has before and after the throttle butterfly and is able to control emssions because of that. Im not 100% sure though←You have me thinking harder now, I will try spend some time in the workshop manual today and suss it out, ford is pretty cagey about this kind of stuff though. haha Link to comment Share on other sites More sharing options...
XR6T8080 Member 398 Member For: 18y 1m 15d Gender: Male Posted 03/04/07 09:47 AM Share Posted 03/04/07 09:47 AM hey guys,I have a totally stock 2003 auto xr6trecently I have noticed when I accererate and back off I can hear alot of turbo flutter, is this normal? I was under the impression you basically wouldn't hear anything in a stocker. should I be taking it to ford to sus out or is it normal?I have a similar problem but not sure if its the same thing...could somebody help me, its exactly as you guys say, when I accelerate and under boost, I let my foot completely off the accelerator.it sounds sometimes like if you were to blow raspberries inbetween your hands kind of sometimes if you know what I mean, like a sort of high pitched fart sound that only lasts for a half second and then is gone, doesnt happen all the time but every now and then...is this the same problem? I was leading towards the blow off valve not releasing enough pressure, because it is definately an air related thing.CheersWes Gold Coast Link to comment Share on other sites More sharing options...
AGENT ORANGE F6 Phoon ----- MISH!! Member 348 Member For: 17y 8m 24d Gender: Male Location: BRISBANE Posted 20/01/08 01:52 PM Share Posted 20/01/08 01:52 PM I was thinking after reading all this, Flutter can reduce turbo life on smaller turbos, like on silvias and WRXs, skylines etc, these turbos are very small flow capacity somwhere around the 180kw@w, hence the air is forced more to fit through smaller area of the compressor. Also has to do with bearing type of the turbo to as to whether the turbo will take it. Wes sounds like exhaust leak, a bov is a distinct doof doof doof when it lets off even in a stock car. if it has after market bov u would hear a loud psssshhh etc. I would lean towards exhaust, leak without hearing it though its only a guess.... Link to comment Share on other sites More sharing options...
keaton185 Member 301 Member For: 15y 9m 17d Gender: Male Location: Straya Posted 04/05/09 11:11 AM Share Posted 04/05/09 11:11 AM With a 3 in 1 BOV, will it be completely silent when it's in plumb-back mode or fully screwed in? Link to comment Share on other sites More sharing options...
WYNDUP Member 21 Member For: 15y 5m 29d Posted 20/06/09 08:09 AM Share Posted 20/06/09 08:09 AM ok ive read the whole thread and liked it, well done boys, but im interested in the flutter. read the part where you attach a pod to the intake pipe where the airbox is is this true or did I miss interpit, cheers Link to comment Share on other sites More sharing options...
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