[urq] S6 tune - what % effect on mpg?

[brady zq]

A good tune should have the potential to decrease your fuel consumption due mainly to optimized timing off boost. BUUUUUT, since you will have all those extra ponies under your right foot, you'll pay dearly in fuel when using them all.

So, in normal driving, fuel economy should be the same or better.
At WOT, it should be much worse, assuming the stock tune wasn't running way too rich in the first place.

Cheers,
Brady 

> From: seanmaccann at gmail.com
> 
> I have a stock 1995 5-cylinder S6.  It's my daily driver.  I've found
> a good engine guy who can do a sensible tune of 320bhp / 500NM.  I'd
> have no issues with this guy's work quality; my question is would
> tuning it like that ruin mpg (for a daily driver)?  Fuel prices in
> Europe (where I am) are bad.  If you do a tune like that, would you
> increase fuel consumption so much that realistically it becomes a
> weekend car?  Or would masses of torque and a good remap mean there
> wouldn't be much difference in normal driving?  Thanks.
> 
> Sean