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turbo lag

Discuss your latest mods or ideas, and anything to do with the BMW X5 (E70).
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535dboy
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Location: East Sussex

Re: turbo lag

Post by 535dboy » Wed Oct 31, 2012 6:51 am

[quote="MJim"]
I'm telling you.  I test drove the Q5 TFSI and Q5 3.0 TDI.  Not sure if it was the turbo or transmission, but the lag was downright dangerous.  Foot flat on the floor, nothing happens at all, wait, wait wait, plenty enough time for someone to pull right in front of you, and then all of a sudden wooshh we're off ... Told them it was a deal breaker for me, and sales lady wasn't surprised - acknowledged problem. Thank goodness for that - X5 is so much better ....
[/quote]

Try it in an A4/5 front wheel drive diesel

Shocking.  Nothing nothing, turbo kicks in wheels spin still don't go anywhere!! Horrible!!!
Currently :
2012 Audi RS4 (B8)
2012 Porsche Boxster S (981)
2008 Lotus Exige S (a bit modified!)
2015 Nissan Leaf twin turbo with Nitros

Previously :
2008 BMW X5 3.0sd MSport
2005 BMW 535d MSport

leosayer
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Joined: Tue Jul 31, 2012 6:34 pm
Location: East London / Essex

Re: turbo lag

Post by leosayer » Wed Oct 31, 2012 1:21 pm

In the Audis, I think the DSG gearboxes just compound the problem.

As good as those boxes may be for lightning fast seamless changes and for emissions, they have some downsides as well.

I love the 8-speed 'slushbox' on my X5.

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535dboy
Lifer
Lifer
Posts: 5491
Joined: Sat Jul 31, 2010 11:38 am
Location: East Sussex

Re: turbo lag

Post by 535dboy » Wed Oct 31, 2012 1:24 pm

[quote="leosayer"]
In the Audis, I think the DSG gearboxes just compound the problem.

As good as those boxes may be for lightning fast seamless changes and for emissions, they have some downsides as well.

I love the 8-speed 'slushbox' on my X5.
[/quote]

I was referring to the turbo lag

The twin clutch boxes are seamless as they are a proper clutch not a torque converter
Currently :
2012 Audi RS4 (B8)
2012 Porsche Boxster S (981)
2008 Lotus Exige S (a bit modified!)
2015 Nissan Leaf twin turbo with Nitros

Previously :
2008 BMW X5 3.0sd MSport
2005 BMW 535d MSport

petert
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Location: East of Toronto (when not in Vienna)

Re: turbo lag

Post by petert » Wed Oct 31, 2012 10:59 pm

The time I notice lag is when I lift off the throttle and then ned to apply some oomph, it's as if the car is thinking 'he wants to slow down, - hang on he wants to go fast again'!

Other than that it's not that noticable to me.

Pete T
2010 E70 35D vermilion red, beige leather, Sport, Technology and Executive packages plus running boards.

leosayer
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Posts: 85
Joined: Tue Jul 31, 2012 6:34 pm
Location: East London / Essex

Re: turbo lag

Post by leosayer » Thu Nov 01, 2012 12:42 pm

[quote="535dboy"]
[quote="leosayer"]
In the Audis, I think the DSG gearboxes just compound the problem.

As good as those boxes may be for lightning fast seamless changes and for emissions, they have some downsides as well.

I love the 8-speed 'slushbox' on my X5.
[/quote]

I was referring to the turbo lag

The twin clutch boxes are seamless as they are a proper clutch not a torque converter
[/quote]

I was referring specifically to pulling away from rest. In my experience, both DSG and Multitronic gearboxes on Audis have a delay when you get onto the throttle, I assume while the clutch engages.

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535dboy
Lifer
Lifer
Posts: 5491
Joined: Sat Jul 31, 2010 11:38 am
Location: East Sussex

Re: turbo lag

Post by 535dboy » Thu Nov 01, 2012 12:44 pm

[quote="leosayer"]
[quote="535dboy"]
[quote="leosayer"]
In the Audis, I think the DSG gearboxes just compound the problem.

As good as those boxes may be for lightning fast seamless changes and for emissions, they have some downsides as well.

I love the 8-speed 'slushbox' on my X5.
[/quote]

I was referring to the turbo lag

The twin clutch boxes are seamless as they are a proper clutch not a torque converter
[/quote]

I was referring specifically to pulling away from rest. In my experience, both DSG and Multitronic gearboxes on Audis have a delay when you get onto the throttle, I assume while the clutch engages.
[/quote]

I hate the multi tronics

Never had a prob on dsg and we now have it on porker
Currently :
2012 Audi RS4 (B8)
2012 Porsche Boxster S (981)
2008 Lotus Exige S (a bit modified!)
2015 Nissan Leaf twin turbo with Nitros

Previously :
2008 BMW X5 3.0sd MSport
2005 BMW 535d MSport

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