Supercharger Asleep?

[BarneyBoy]

Well the TSI I took for two extended test drives had that grunty all over feeling all the time, regardless of accelerator as Barney has alluded to. There was no obvious lag like in a typical turbo car. To me it felt like my Mum's Accord Euro, a bigger 2.4 L engine.

I think there is definately something still wrong, there is no point in VW releasing a twin charge car that feels like a single charge ( typical turbo ). The WHOLE point of the supercharger is to fill the turbo lag gap.

Couldn't agree more, cog.

I suggest a couple of things:
1) See if you can test drive another TSI at your stealer, or at another dealer. Or
2) Ask one of the Melbourne guys with one to let you drive theirs (if you were in Adelaide I'd let you drive mine).

Seriously, the s/c should work almost ALL the time, not just on 'kickdown'. The GT should be like driving a GTI - but with more bottom end and less top end.

[Fanaki]

2) Ask one of the Melbourne guys with one to let you drive theirs (if you were in Adelaide I'd let you drive mine).

very much appreciate the offer Barney, if it had been a few months back i would have taken you up on it (as i was travelling to Adelaide weekly)

i'm gonna have to go to a stealer and see if there is a TSI about that i can drive. being that the car is under warranty, i can take it to any vw service centre right?


a question for you guys regarding the boost gauge, should it show movement when cruising? or only under load? i generally only see it "blip" if i'm not nailing the car...

thanks again

[BarneyBoy]

For the 1st year, my boost gauge would move if I even LOOKED at it! It'd slam up against the stop every time I touched the accelerator.

But after the 1st one year service and the 24M3 Service Campaign, the boost gauge is much less responsive, and more realistic in its movement.

The needle on mine won't move when I'm cruising. But under load (uphill incline) or acceleration, and the needle climbs. The TSI is designed for the s/c to do exactly that - this is for fuel economy purposes. The s/c is programmed to electronically engage its clutch when under low load and during the s/c turbo 'handover' (2500-3500).

That's why I asked if you had a light foot - I find you have to drive like in a fuel economy competition to NOT have the s/c engage (if you crack your window down in a tunnel, side street &c you'll hear the s/c whine from idle to about 3000 rpm - a fave time for me!).

Regarding the dealer, yes you can use any dealer in the VW network.
Yes, I'd get a 2nd opinion! Good luck!

[Paul_OH]

I don't believe mine has the 24M3 update however will be taking it in early next year to get an exhaust/heatshield rattle looked at and will check the status of software. I haven't had any problems with Supercharger engaging though, ever.
The boost gauge is very sensitive and is operating under normal acceleration unless you go very light footed even then only in peak hour type/traffic crawling conditions. I also find it very easy to modulate the boost using the right foot (ie if I don't want full boost I can very easily adjust the amount of boost by accelerator pedal pressure). Also yes, slow/slight/even acceleration will actuate the supercharger as and when it needs to, definitely not by cracking the throttle hard only.
I agree that there is something not quite right with yours and you should test drive another at the dealer and possibly hook up with someone else on the forum who can show you theirs with some real world experience instead of brushing you off.

Paul

[Fanaki]

thanks Paul.

if i get a chance, i'll swing by a dealer on the way home and ask them to have a look. i can't believe it's taken me 3 wks and 2000km to work out that something isn't right!

i will keep you all posted.

thanks,
Francis

[Greg Roles]

...... (if you crack your window down in a tunnel, side street &c you'll hear the s/c whine from idle to about 3000 rpm - a fave time for me!).

Mate, you realise the supercharger has acoustic shielding all over it? (According to what I found on Erwin anyhow.)
If I owned a TSI, THAT would be coming off.

[Paul_OH]

Mate, you realise the supercharger has acoustic shielding all over it? (According to what I found on Erwin anyhow.)
If I owned a TSI, THAT would be coming off.

Please, tell me more! I haven't had my car on a hoist but it's very difficult to even see the S/C let alone access it between the block and the firewall and under the inlet piping!

[BarneyBoy]

Mate, you realise the supercharger has acoustic shielding all over it? (According to what I found on Erwin anyhow.)
If I owned a TSI, THAT would be coming off.

Yeah, cog - don't you torture Paul & me!!!!
I'd LOVE it to be just a touch louder.
Already I can get a crowd of pedestrians to snap their heads around on a brisk takeoff - they can't work out how come that sound is coming from a Golf!

[gareth_oau]

hmmm, not entirely relavant, but gotta love this whistle!!

http://au.youtube.com/watch?v=FBkX8GS5FoY

around 3:05 sounds great, and 3:18 even better!

[bazzle]

Supercharger or Turbo charger on that model Golf??

as in Engine or Exhaust driven?

Bazzle

[tinto]

Supercharger or Turbo charger on that model Golf??
as in Engine or Exhaust driven?

Remove 'OR' from your post, and you have your answer

Both forms of induction involved run on their normal means (eg SC on engine, Turbo on exhaust).

There's a clutch on the SC to disengage at higher RPM (when it's all turbo), so no parasitic power loss.

[Greg Roles]

I had wondered WHY no-one had done this, sure access looks tight, but it would be first on my TSI to-do list!

I just figured you TSI guys were soft.

It appears there is foam insulation either side of the blower itself, inside a hard plastic housing. Also, on the inlet and outlet there is additional sound insulation, reducing induction noise.

What I'd do:

1. Look at ditching the sound proofing on inlet and outlet of blower as indicated in picture. This may give you guys the extra you are after. The "box" on the inlet looks to be full of foam!

2. remove insulation and possibly plastic cover as well around blower. Shield from engine block, and exhaust heat. This looks like a major task, as it's between the block and the firewall above the exhaust. Still, if it was me, I'd flippin get in there! The foam will keep the heat in the blower too, and with a twin charge, heat is your enemy much more so than a one charged car. You guys are upping the heat twice!

3. Get a cattledog, sawn-off, a knee brace and call yourself "max".

Enjoy!

[Greg Roles]

[Greg Roles]

[GTom]

if you crack your window down in a tunnel, side street &c you'll hear the s/c whine from idle to about 3000 rpm - a fave time for me!.

My favorite as well! Just going up to different levels in a carpark seems to turn alot of heads...

Seems tempting cogdoc.... very tempting....