TSI squeal noise problem on acceleration

[MariusGT]

Yeah, I wouldn't mind if the whining and whistling was more clearly audible, the TSI's a bit characterless with the windows up. There's no squeal noise here either.

What causes the exhaust farting? I thought that only the GTIs did it - I haven't noticed anything that fits that description in my Mk6 TSI.

Never driven a MK6 - the engines are close siblings though so would have thought not so different!
There are stories doing the rounds of people removing supercharger insulation (polar??) which apparently frees up air flow and in turn keeps it cooler (built in wings of metal?) and of course louder...

also does the MK6 have a boost gauge?

last - the exhaust fart is all about timing. using manual shift with your DSG (i use paddles... not a fan of the stick unless in amongst some tight bends where the steering wheel mounted paddles become impossible) up shift at the right RPM (4000??..) and with windows down you should hear a distinct pop/fart sound.

again - i haven't driven a MK6.... so don't quote me if it doesn't!!

[Brendan_A]

Mk6 TSI doesn't have a boost gauge.

[cameronp]

last - the exhaust fart is all about timing. using manual shift with your DSG (i use paddles... not a fan of the stick unless in amongst some tight bends where the steering wheel mounted paddles become impossible) up shift at the right RPM (4000??..) and with windows down you should hear a distinct pop/fart sound.

Ah, gotcha! Tried that in mine tonight and see what you mean.

Of course, in the process of playing around with manual mode and listening more carefully to engine noise with the stereo off I also discovered that I've got the squeak/squeal that this thread is complaining about. Doesn't really bother me, and I'm not sure now whether it's been doing it for ages and I've only just noticed it, or whether it's only started doing it recently.

[MariusGT]

Ah, gotcha! Tried that in mine tonight and see what you mean.

Of course, in the process of playing around with manual mode and listening more carefully to engine noise with the stereo off I also discovered that I've got the squeak/squeal that this thread is complaining about. Doesn't really bother me, and I'm not sure now whether it's been doing it for ages and I've only just noticed it, or whether it's only started doing it recently.

i'm in the group of people who couldn't care less about the squeal/squeak. while i understand some people have an issue with paying a premium for a higher class of car and not likeing the noise--> it just does not bother me one bit.

as i have said many a time: i love the myriad noises coming from my car!! (except squeaky brakes when it's REALLY cold and i am using gears to slow down -- glazing brake discs a bit.... oops)

[triode12]

i'm in the group of people who couldn't care less about the squeal/squeak. while i understand some people have an issue with paying a premium for a higher class of car and not likeing the noise--> it just does not bother me one bit.

as i have said many a time: i love the myriad noises coming from my car!! (except squeaky brakes when it's REALLY cold and i am using gears to slow down -- glazing brake discs a bit.... oops)

My GT doesn't sqeal, squeak, creak or squark from the engine area. But with the windows down, radio off and in a quiet area, I can hear the faint high pitch whine of the SC. And on spirited acceleraton, I do hear the turbo blow off.

[Brian]

My GT doesn't sqeal, squeak, creak or squark from the engine area. But with the windows down, radio off and in a quiet area, I can hear the faint high pitch whine of the SC. And on spirited acceleraton, I do hear the turbo blow off.

I can't hear anything! Too old I guess

[MariusGT]

My GT doesn't sqeal, squeak, creak or squark from the engine area. But with the windows down, radio off and in a quiet area, I can hear the faint high pitch whine of the SC. And on spirited acceleraton, I do hear the turbo blow off.

Faint high pitch whine??!!

I regularly hear a commodore near my house (vs or vr) with an aftermarket sc fitted- makes a HORRIBLY LOUD (note caps for increase effect?) whine. I know the little roots jobby fitted to the 1.4 is no scorcher...... But "faint" just doesnt cut it.

Maybe you need to put the boot in a bit more? Or drive down a narrow alley (Newtown has plenty) or tunnel with no traffic around and have a proper listen to your engine and it's lovely sound..

I sometimes park in my garage and leave the car running just so I can hear the exhaust reverberating/echoing off the closed roller door.

[triode12]

Faint high pitch whine??!!

I regularly hear a commodore near my house (vs or vr) with an aftermarket sc fitted- makes a HORRIBLY LOUD (note caps for increase effect?) whine. I know the little roots jobby fitted to the 1.4 is no scorcher...... But "faint" just doesnt cut it.

Maybe you need to put the boot in a bit more? Or drive down a narrow alley (Newtown has plenty) or tunnel with no traffic around and have a proper listen to your engine and it's lovely sound..

I sometimes park in my garage and leave the car running just so I can hear the exhaust reverberating/echoing off the closed roller door.

LOL - I don't doubt it. Is this before or after removal of the soundproofing?
I seriously can't really detect it working unless it is under those conditions I mentioned earlier. Driving any faster, I'd only be hearing the sound of the rush of the wind buffeting the seat belt and tyre/road noise.

You wouldn't want to leave the engine on too long in your enclosed garage...!

[MariusGT]

I haven't removed the soundproofing..

i don't mean you need to drive fast to hear it - quite the contrary. It's MOST audible in 1st gear acceleration off the mark when the sc is cranking to lift revs. due to relative speed and low wind noise etc (as you mentioned) the sc SHOULD be quite audible. especially since you drive a GT and not the slightly detuned 118. hmmmm... boot it in 1st and get back to me!

carport. rolladoor plus one more wall and a roof - the rest is all tropical garden. i'm actually feeding my ferns etc some Co2!!

[logger]

Mine is FAINT and extremely difficult, if not impossible to hear. Even though your GT is detuned to 125kw as compared to mine at~ 150kw Perhaps the supercharger is more audible in the cabin in the older MK5 BLG engine as compared to the more recent MK6 CAV installation.

By the way, you will get a markedly longer SC run time in 3rd with a DSG6 or 4th in a DSG7 than in 1st. In Manual mode slow right up to about 20 K's and then plant it in the tallest gear you can. Because in the tall gear the revs are far slower to rise to 2500/3500rpm range where the SC cuts out. You need to get a high torque demand with relatively slow rev increase. In 1st the revs usually climb so quick that the SC will only run momentarily.

You absolutely sure it is the SC and not the turbo you are hearing?