S350 W220 improving fuel economy and performance?

[Steamtronic]

Hi, Im looking at a 2003 S350 W220 with about 165K on the clock, and was considering options to improve economy and performance. I'm new to this so please excuse the newbie q's!

I do a lot of highway driving, but also get stuck in peak hour crawl. I'm mainly after better fuel economy but wont complain if I get more power into the bargain!

For economy I was considering either an ECU remap or aftermarket chip. Any suggestions?

What about transmission ratios?

Air filters?

Is there any point putting a supercharger on it or will that just negate the economy gains from the remap / chip? If a supercharger would be ok, are there any non-Merc options that you could suggest (the genuine Benz parts are pretty pricey - hence Im not considering a turbo due to installation costs).

Any other suggestions?

Thanks!

 

[television]

We do not have many 350's in the uk, it uses the 112 engine and not much to be gained from chipping for economy if anything, it is a heavy car, the newer 272 engine is a big improvement but too new for the 220

 

[GAD Tuning LTD]

Television is right! Unfortunately gains wise we would struggle to get anything above 12 BHP from the vehicle. As for fuel economy there isn't really a lot you can play with to improve economy.

Regards

Anthony @ GAD