Sign in to follow this  
Followers 0
fatcat

More torque ?

14 posts in this topic

Something good on going on here, the ol gal has just done 14k, and in the last week, when down here in the 'affluent south' we had early morning temperatures of something like 1-2 degress, my car had, without doubt much more improved torque at lower revs.

Yesterday and this morning the ol gal seemed back to normal, time now to monitor the outside air temps and match against performance me thinks.

Fuel consumption has not changed.

Anyone else notice !

Share this post


Link to post
Share on other sites

It's difficult to say fatcat, when it gets as cold as this I tend to slow down a bit. The low down power on these TDIs is amaising and still impresses me.

Share this post


Link to post
Share on other sites

Yeah I noticed this too Pete.

At the Northern meet last week, the air temperature was below zero for most of my 60 mile drive to the pub, but the car (after warming up) was pulling like a train. Even uphill in 6th at 70, I could feel the car accellerate hard up to 85 (all kph, of course wink.gif)

The previous day, when the air temperature was higher and I was driving in daylight, things were not so hot.

Share this post


Link to post
Share on other sites

</font><blockquote><font class="small">In reply to:</font><hr />

The low down power on these TDIs is amaising and still impresses m

[/ QUOTE ] My car is mostly useless below around 1200rpm.

Now the new s4, that's the beast - almost as much torque as the S3's maximum at a mere 1100 rpm. Of course, not much more max torque than my 2.5Tdi, but it's the low rpm grunt I really miss.

Share this post


Link to post
Share on other sites

Are they going to do a diesel S4 then? If not I'm not interested. Can't go back to filling up more than once a week!

Share this post


Link to post
Share on other sites

</font><blockquote><font class="small">In reply to:</font><hr />

Are they going to do a diesel S4 then?

[/ QUOTE ]

If they could fit that V10 from the Touareg into an A4, we'd certainly have something to torque about smile.gif

Share this post


Link to post
Share on other sites

I may be wrong.....but i seem to remember someone saying that turbo's lurve cold air, hence why you're car is a bit faster (noticed it on mine too)

Share this post


Link to post
Share on other sites

Yeah there was some discussion about cold air in one of the other forums last week. It's denser than warm air, so the turbo can get more into the engine. Not sure why that's a good thing, but I believe everything I read on the Internet smile.gif

Share this post


Link to post
Share on other sites

Guessing but I'd say more air = more oxygen better for combustion. Same reasoning as why to use a turbo, that gets more air in.

Share this post


Link to post
Share on other sites

IIRC the TDi 130 doesn't have an intercooler? Or is that bollox?

The PD 150 still feels the same, but it does have an intercooler (something the 130 Tdi doesn't IIRC).

Or am i just p!ssed after getting off work at midday and drinking all afternoon?

Share this post


Link to post
Share on other sites

All A3 Tdi's have intercoolers (110 + for certain)- which love the cold dense air. After a long run on the motorway I notice a fair bit more shove as the pipework and intercooler are all nice and chilled. Sat in a traffic jam will just warm everything up and be detrimental to the performance. This is the ONLY good thing about winter grin.gif

Share this post


Link to post
Share on other sites

I haven 't noticed more torque when it 's cold, but definitely less torque and/or power when it 's hot (+25°C).

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now
Sign in to follow this  
Followers 0