2006 A4 Avant S-Line Tdi 170 Performance Issues - Please Help!

**a8 tech** · 21-07-2010,10:06 PM

I have seen lots of blocked dpf filters from tuning/ add on box things so always seek the best tuner for dpf engines.Shark 90 offers a dpf off solution plus he understands the parameters the remap needs to avoid dpf issues.

**Tricky_Dicky** · 22-07-2010,11:21 AM

Has anyone had this Shark Performance remap or DPF removal done to an A4 2.0 Tdi 170 DPF Quattro Avant, or similar? Did it make much of a difference and have you had any problems with lumpy power acceleration or exhaust issues since?
What was the total cost and did you have to get a new exhaust system? Thanks. I don't know too much about all this but am annoyed at economy/DPF/lumpy acceleration of my recently bought late 56 plate A4 170 above. Any advice and recommendations on remap would be appreciated. I am concerned about any ill effects from DPF removal and also read that the 170 cannot or shouldn't be remapped as it is already a tuned version of 140 engine! Any truth in this?

**RMH1** · 22-07-2010,12:42 PM

Originally Posted by Tricky_Dicky

Has anyone had this Shark Performance remap or DPF removal done to an A4 2.0 Tdi 170 DPF Quattro Avant, or similar? Did it make much of a difference and have you had any problems with lumpy power acceleration or exhaust issues since?
What was the total cost and did you have to get a new exhaust system? Thanks. I don't know too much about all this but am annoyed at economy/DPF/lumpy acceleration of my recently bought late 56 plate A4 170 above. Any advice and recommendations on remap would be appreciated. I am concerned about any ill effects from DPF removal and also read that the 170 cannot or shouldn't be remapped as it is already a tuned version of 140 engine! Any truth in this?

Many on here have had remaps done by shark. Give ben a call he is very helpful.
www.sharkperformance.co.uk/

**crmason** · 22-07-2010,12:47 PM

Has anybody had a Viezu remap done? Any feedback would be great!

Check out there site and let me know what you think.

Shark is a bit far for me to travel if i need any aftersales stuff doing.

Cheers.

http://www.viezu.com/

**gaz1965** · 22-07-2010,05:17 PM

Originally Posted by crmason

Has anybody had a Viezu remap done? Any feedback would be great!

Check out there site and let me know what you think.

Shark is a bit far for me to travel if i need any aftersales stuff doing.

Cheers.

http://www.viezu.com/

Just been on the website and noticed they are only in Thetford i wonder if they will do a discount for two Chris,

**crmason** · 23-07-2010,06:25 PM

UPDATE: Car went in to Audi today. Came back ok and got a print out of all the diagnostic checks. The only thing I noted was that they done a software upgrade: Diesel direct injection and preheating system update from 9888 to 9973. I have no idea what this means tho. Any ideas?

**a8 tech** · 23-07-2010,08:12 PM

sw 9973 is the latest software update and rectifies egr and fuelling problems.

**crmason** · 29-07-2010,09:21 AM

Ah-ha. That might explain some things then.
Cheers A8tech!

**Addie** · 30-07-2010,11:20 AM

I had my A4 2.0 TDI 170 back into Audi as it was running a bit rough.

There was a recall flash ECU upgrade on the car and they removed and 'sonic cleaned' the injectors.

The best thing I did to my TDI 170 though is fit cruise control.

Like you I was struggling to get over 44mpg on a run. I fitted the cruise and now get 48 regally. I believe this is because when driving at 70/80 your actually sitting in the turbo power band so ever slight feathering with the throttle will cause it to burn more fuel (or at least that's how I retaionalised it to myself!)

I did want a TDI 140 originally but the S-Line Special Edition only came as a 170 so that's what I had to have. It's worth mentioning that many 170's are actually closer to 180 in terms of power output, mine came out at 181. There are also other additions over the 140 such as a new injector rail and the dreaded DPF.

**RJS_90q** · 30-07-2010,10:11 PM

Has anyone else tried leaving their car in fifth gear at motorway cruising speed (70 mph) rather than sixth ?

I read that some DPF issues were occurring on cars even on motorway journeys and that the cooler exhaust temperatures when using sixth gear were at least partly involved. I decided to try not using sixth gear as an experiment and have only been using fifth gear as the highest gear.
I haven't been on a long motorway journey using this technique yet but on A roads (typically between 50 and 60 mph) the mpg has improved (39 to 41/42 mpg). Previously, I was putting the car into sixth from 50+ mph if it was on the flat.

I would be interested to know if anyone else has tried this. My reasoning is that it is running at a higher torque output point in the powerband resulting in less accelerator pedal effort being required (?)

Just thought I would share this for discussion.
Anyone else tried this ?
What speed do you put the car into sixth gear ?