P.S.I Member 229 Member For: 22y 1m 24d Location: sydney Posted 08/04/04 12:19 AM Share Posted 08/04/04 12:19 AM Last night in Sydney was quite mild and I was driving home at about 10.00pm in my T and heard a sound that I have not heard before.I was using the SSS and accelerated away from the lights in 1st but was forced to jump off the loud pedal ( at max revs ) due a car pulling out from a side street, this is when I heard the sound.Is this the boost being dumped ?? Would the cooler dense air on a cold night cause this ? I tried to replicate it this morning and I could not.There is no discernable loss of power or mechanical noises so I assume that everything is OK.Any ideasCheersPSI Link to comment https://www.fordxr6turbo.com/forum/topic/10034-different-sound-from-turbo/ Share on other sites More sharing options...
shadyxr Donating Members 132 Member For: 21y 8m 27d Location: Sydney Posted 08/04/04 12:33 AM Share Posted 08/04/04 12:33 AM Sounds like wastegate & BOV doing their job. You can hear it if you listen carefully with high revs on the gear change. Link to comment https://www.fordxr6turbo.com/forum/topic/10034-different-sound-from-turbo/#findComment-109392 Share on other sites More sharing options...
Guest ADICTD Guests Posted 08/04/04 01:06 AM Share Posted 08/04/04 01:06 AM P.S.I - every turbo car has a BOV to release the extra air, the standard ones jus dont make a noticable noise unless its really quiet>> e.g early morning or late nite like you said, Link to comment https://www.fordxr6turbo.com/forum/topic/10034-different-sound-from-turbo/#findComment-109402 Share on other sites More sharing options...
aps Member 1,505 Member For: 22y 3m 29d Posted 08/04/04 01:19 AM Share Posted 08/04/04 01:19 AM Last night in Sydney was quite mild and I was driving home at about 10.00pm in my T and heard a sound that I have not heard before.I was using the SSS and accelerated away from the lights in 1st but was forced to jump off the loud pedal ( at max revs ) due a car pulling out from a side street, this is when I heard the sound.Is this the boost being dumped ?? Would the cooler dense air on a cold night cause this ? I tried to replicate it this morning and I could not.There is no discernable loss of power or mechanical noises so I assume that everything is OK.Any ideasCheersPSIYou may have hit the REV limiter if you were at max RPM, this will make the engine miss fire.......sounds really strange. :lol:PeterAPS Link to comment https://www.fordxr6turbo.com/forum/topic/10034-different-sound-from-turbo/#findComment-109406 Share on other sites More sharing options...
P.S.I Member 229 Member For: 22y 1m 24d Location: sydney Posted 08/04/04 01:53 AM Author Share Posted 08/04/04 01:53 AM Last night in Sydney was quite mild and I was driving home at about 10.00pm in my T and heard a sound that I have not heard before.I was using the SSS and accelerated away from the lights in 1st but was forced to jump off the loud pedal ( at max revs ) due a car pulling out from a side street, this is when I heard the sound.Is this the boost being dumped ?? Would the cooler dense air on a cold night cause this ? I tried to replicate it this morning and I could not.There is no discernable loss of power or mechanical noises so I assume that everything is OK.Any ideasCheersPSIYou may have hit the REV limiter if you were at max RPM, this will make the engine miss fire.......sounds really strange. :lol:PeterAPS :lol: :lol: Peter I am pretty sure that it was not the limiter. That usaully involves feeling like a goose because you are still going forward whilst the car feels like it has stopped :lol: PSI Link to comment https://www.fordxr6turbo.com/forum/topic/10034-different-sound-from-turbo/#findComment-109422 Share on other sites More sharing options...
ms700 Moderating Team 10,170 Member For: 22y 5m 4d Gender: Male Location: Sydney Posted 08/04/04 01:57 AM Share Posted 08/04/04 01:57 AM If it sounded like a "flutter", it was the turbocharger's wastegate. Well actually its a lot more complicated than that, but that's the simplest way of explaining it. Completely normal. And sounds I reckon! Link to comment https://www.fordxr6turbo.com/forum/topic/10034-different-sound-from-turbo/#findComment-109427 Share on other sites More sharing options...
XRPhantom Member 173 Member For: 21y 8m Location: NSW Posted 08/04/04 04:53 AM Share Posted 08/04/04 04:53 AM From what I can tell it is the BOV, I installed a K&N air filter on my T and you notice it twice as much. I love the sound when you give it a bootfull in manual mode of the SSS and let your foot of the gas. Link to comment https://www.fordxr6turbo.com/forum/topic/10034-different-sound-from-turbo/#findComment-109507 Share on other sites More sharing options...
Goose 00-XRG / 006-FPV Donating Members 530 Member For: 22y 7m Gender: Male Location: Brisbane, QLD Posted 08/04/04 07:14 AM Share Posted 08/04/04 07:14 AM (edited) Last night in Sydney was quite mild and I was driving home at about 10.00pm in my T and heard a sound that I have not heard before.I was using the SSS and accelerated away from the lights in 1st but was forced to jump off the loud pedal ( at max revs ) due a car pulling out from a side street, this is when I heard the sound.Is this the boost being dumped ?? Would the cooler dense air on a cold night cause this ? I tried to replicate it this morning and I could not.There is no discernable loss of power or mechanical noises so I assume that everything is OK.Any ideasCheersPSIYou may have hit the REV limiter if you were at max RPM, this will make the engine miss fire.......sounds really strange. :lol:PeterAPS :lol: :lol: Peter I am pretty sure that it was not the limiter. That usaully involves feeling like a goose because you are still going forward whilst the car feels like it has stopped :lol: PSI Did someone say my name?? I wouldn't have thought it was the wastegate as the wastegate opens when you hit 6psi to let excessive exhaust gasses bypass the turbine to stop your car creating any more boost. Therefore in theory our wastegates are opening at say 2500-3000 rpm when we deliver boost and staying open.I reckon it was most definately the BOV realeasing most pressure but if it was a flutter than some of the air in the system would have been going backwards through the compressor, and it hitting the blades giving the flutter, which I love. Edited 08/04/04 07:15 AM by Goose Link to comment https://www.fordxr6turbo.com/forum/topic/10034-different-sound-from-turbo/#findComment-109572 Share on other sites More sharing options...
ms700 Moderating Team 10,170 Member For: 22y 5m 4d Gender: Male Location: Sydney Posted 08/04/04 07:40 AM Share Posted 08/04/04 07:40 AM but if it was a flutter than some of the air in the system would have been going backwards through the compressor, and it hitting the blades giving the flutter, which I love. that's what I was trying to say!that's the noise I reckon it was. Link to comment https://www.fordxr6turbo.com/forum/topic/10034-different-sound-from-turbo/#findComment-109580 Share on other sites More sharing options...
slapnut Member 216 Member For: 21y 3m 14d Location: Siddie Posted 08/04/04 09:12 AM Share Posted 08/04/04 09:12 AM I sometimes get the BOV noise as well but most of the time I can't hear it, which is a shame.I was thinking that something mut be wrong. Link to comment https://www.fordxr6turbo.com/forum/topic/10034-different-sound-from-turbo/#findComment-109601 Share on other sites More sharing options...
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