[joe90]

Hi

just taken delivery of our replacement EOS 2.0 TFSI Individual from VW (first one had water leak problems) and noticed that it now has TSI on the back not FSI and engine seems quieter and doing more mpg (33-36) even though done < 500 miles.

anyone know if there have been some engine mods?

lovin the new touch screen sat nav as well

cheers

Joe

 

[evolvingpowercat]

Generally, TSI engine exists in the 2009 models, and the FSI engine exists in the 2008 2.0T Eos models. You should be able to tell by opening the hood and looking at the top engine cover the letters on lthe cover will be TSI or FSI depending on which one it is.

The TSI is a major redesign of the 2.0T engine, it shares almost no parts with the old FSI one. There is a very good technical write-up on the TSI in the following VWvortex.com thread:

http://forums.vwvortex.com/zerothread?id=3889971

The TSI improvements include better variable valve timing capability and some friction reducing features vs. the FSI so it is very possible that you are getting slightly better gas mileage than you did with your 2008 Eos.. The USA EPA highway mileage rating on the Eos was raised by 1 MPG vs. the 2008 Eos another indication that the new engine is slightly more efficient than the FSI.

 

[joe90]

thanks for the info Randy.

Looked at engine and although says TSI on the back says FSI on engine cover with dipstick at front of engine. so looks like the older FSI engine, maybe they have updated the EMS to get the higher mpg i am getting.

either way good to get a few more miles out of a gallon given petrol prices over here!

cheers

joe

 

[SiJ2000]

They are cheeky! Sounds like they are putting TSI badges on cars that are still from the FSI stock!! Tut Tut!!

 

[evolvingpowercat]

You can't tell just by the VIN number or model year if you have the old vintage or new vintage 2.0T engine, you have to open the hood and look to be sure. Only time will tell on the new 2.0T but so far it looks like a winner.

So far as the better gas mileage, there are lots of possible reasons including - tire pressure is higher than before, there is 0W-40 energy saving oil vs. 5W-30 or 5W-40 oil before, normal tires vs. all-season tires before.