
Originally Posted by
noone
Some funny comments in here...
Firstly, have you scanned the car with Vag-com? this should show you if there is a fault with the car...
When you are talking about aftermarket tunes, there are 2 varieties, off the shelf and custom.
With off the shelf, you know what to expect because its all been developed and installed in a few other identical vehicles previously.
With custom maps, the tuner may have an idea, but as its actually tuned to your vehicle, it may be better or worse than expected. If the car has done high kms and been babied, I would not expect to get the same results as a new vehicle with some light mods.
As for your OP, I'd take it back to your dealer and say it has recently started chewing petrol. If you had a tune that is 'invisible' as APR claim, then you'd expect the dealer to reflash it to see if that fixes the issue... Although this could just create more problems, all depends how well you play dumb and how quickly they want your problem fixed without investigating.
Haven't checked the car with Vag-com yet. The tune I had was an off-the-shelf tune, and found out after that I was "over promised" improvements. My dilemma at the moment is that whatever I do I could make it worse, even if I got the Tuner to re-install the tune the fuel consumption could still be bad if I don't understand what's causing it first.

Originally Posted by
Maverick
I wouldn't take it back to the dealer without doing some checking as you mentioned with Vagcom/VCDS or trying to get access to a dealer tool. Places to check are the flash counter and anything else that looks out of place which would flag this to the dealer as having been altered. It's unlikely they would reflash the ECU without a reason and if they dig around looking into the fuel consumption problem they will most likely find that it's been tampered with which will lead to warranty issues.
No, didn't plan taking it back for this reason and absolutely don't want to tell em!

Originally Posted by
2muchcoffeeman
I think whether or not there is actually an issue depends on the type of driving you do and how you drive.
I do a whole heap of short stuff- mainly inner city and work is only a few km away. The only way I'd ever see 500km is on a long run and around town, it's often under 400. 14ish l/100km (and that's by the trip computer, so most likely optimistic) is typical for me and I don't often drive hard nor fast.
I'm comparing against my own driving style, which hasn't changed that much. In fact, I'm actually driving less fast now then when the car was new and not yet done the ECU. I'm driving a fair bit more long distance now and with the tune I could easily get over 600km freeway driving (been to Mildura few times and easily got there on 1 tank with plenty km to spare). Maybe I should just re-install the tune purely for fuel consumption
R36 Wagon, blue, sunroof, towbar, auto tailgate, MDI, and now with upgraded sound system
1969 TL1600 Fastback
Suzuki GSX1400, Yamaha XVS1100 Bobber
....fairings are for scooters!
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