Hi all,

I have an October 09 Superb 1.8TSI manual which has done 12000 miles and was bought three months ago as a 6000 mile old ex.demo.

When we purchased the car it came fitted having been fitted by the supplying dealer (the 1st owner) with a Diesel Power Tuning module - apparently the dealer fits them as standard practice to almost all their demos.

The car has so far performed faultlessly but on Thursday I noticed that the car was hesitating whilst I was cruising - feels like you're running out of petrol and the car runs very lumpily for a few seconds, refusing to rev cleanly - then it clears and revs fine. There don't seem to be any pattern to it - it has since done it whilst on the cruise control at 60, accelerating hard in second, gently in fourth etc - I can't replicate it and it doesn't do it all the time but generally once or twice in every journey since Thursday it has started doing it.

I am thinking I need to get it to my local dealer - I am a bit worried about their reaction to the fact it's been tuned - as the supplying dealer are 150 miles away I can't really take it to them.

Any thoughts appreciated.

Justin.

Hi all,

I have an October 09 Superb 1.8TSI manual which has done 12000 miles and was bought three months ago as a 6000 mile old ex.demo.

When we purchased the car it came fitted having been fitted by the supplying dealer (the 1st owner) with a Diesel Power Tuning module - apparently the dealer fits them as standard practice to almost all their demos.

The car has so far performed faultlessly but on Thursday I noticed that the car was hesitating whilst I was cruising - feels like you're running out of petrol and the car runs very lumpily for a few seconds, refusing to rev cleanly - then it clears and revs fine. There don't seem to be any pattern to it - it has since done it whilst on the cruise control at 60, accelerating hard in second, gently in fourth etc - I can't replicate it and it doesn't do it all the time but generally once or twice in every journey since Thursday it has started doing it.

I am thinking I need to get it to my local dealer - I am a bit worried about their reaction to the fact it's been tuned - as the supplying dealer are 150 miles away I can't really take it to them.

Any thoughts appreciated.

Justin.

Coil pack(s) This is only a guess, but normally gives the symptoms you are talking about!

Don't worry about the tune thing, if a Skoda fitted it, then it must be approved.

Fault wise, here's a list

Dirty fuel, try filling up elsewhere

Crank sensor if it has one

Can sensor

Coil Pack

Spark Plug, although unlikely as it should do it all the time

Right now the first thing I'd do is get some fuel inj treatment for the tank, and use a different garage

If this doesn't work, try some V-Power, if it goes away it probably is the tune box causing it, then you just insist they remove it.

Why would a dealer fit a diesel tuning module to a petrol model?

Why would a dealer fit a diesel tuning module to a petrol model?

Good question, I think it's bad fuel doing it myself.

Why would a dealer fit a diesel tuning module to a petrol model?

thought that might be asked - Diesel Power Tuning are a UK company who import Essing tuning modules from Holland, Originally, as their name suggests, they tuned diesels. I would imagine that the common rail petrol engine lends itself to the same tuning methods as the common rail diesels, hence they offer a tuning module for the TSI engines....

The car was not advertised as a tuned model. The dealer drove it to us to see it and we did an online payment when the car checked out ( I knew I wanted Superb 1.8TSI so I wasn't privy to the handover).

The salesman who delivered the car pointed out it had been tuned . He explained that as they also sell lots of caravans they get almost all of their cars tuned for torque and economy - I did find this a little strange when I was told - but he explicitly stated that it did not affect the manufacturers' warranty unless it was something that was caused by the re-map.

Anyway it's booked into our local dealer tomorrow morning. I'm betting on dirty fuel - especially given I posted up a couple of weeks ago about never having experienced dirty fuel and how it was all a myth

but he explicitly stated that it did not affect the manufacturers' warranty unless it was something that was caused by the re-map.

:think: Mmmmmm. Think about it !

All fixed thanks to the efforts of both the supplying dealer and my local dealer - faulty fuel pressure regulator changed under warranty - a bit of huffing and puffing at the tuning module but a satisfactory result!