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Old 04-04-2011, 02:10 PM   #49 (permalink)
ConnClark
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Join Date: Jun 2008
Location: Richland,WA
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Das Schlepper Frog - '85 Mercedes Benz 300SD
90 day: 23.23 mpg (US)

Gentoo320 - '04 Mercedes C320 4Matic
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Quote:
Originally Posted by oldbeaver View Post
I agree. I have a Skoda Octavia of 2009, with a 1.9 TDI engine and DSG transmission. Air intake that comes standard is bigger than the PD160 some are reccommending. So it has all the air intake it needs. This car is giving me over 48 mpg for a full tank.
Exhaust pipes as 2.5" factory standard.
Mileage is very difficult to improve with this beauty.

As it has a built in computer that gives real time consumption (marginal and mean), I am seeking a mean of remap "something" that can improve mileage, by means of software or such. I already bought a VAG cable, but need help to proceed.

Any suggestions?

Oldbeaver
Actually if you read part 4 of Julian's write up Browser Warning he states "A dyno run of the car prior to tuning showed a peak power of 77kW at the wheels – a surprisingly good performance given the slight loss in on-road acceleration recorded after the intake and exhaust mods, and also given that the factory claims 77kW at the flywheel. (On these Dyno Dynamics dynos there is typically a 25-30 per cent loss in peak power between the flywheel and rollers – losses caused by the transmission and the deflection of the tyres over the relatively small diameter rollers.)"

Later he also shows that before the remap the exhaust and intake mods did improve mileage.

5.6 litres/100km before mods
5.5 litres/100km after ( note the web page says 5.5 litres/10km but it is safe to say that is a typo)


Interestingly the article states that the ECU has a torque limiting map. this is something I have never heard of in an ECU.
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