It's hard to know about the difference, but on our gravel car it runs on automatic, we also link the wiper bottle into the jets as well, so it pulls 2/3rds IC bottle 1/3rd washer bottle (hence no screen cleaner). We will use all the water up through about 2-3 stages or 15-20 miles.

From what I have been told when we are running the ALS and tanking it through a stage then yes it is worth it . Driving on the road sections at slower speed we still hear it cutting in.

 

Just one other interesting fact about the Integrale engine: it had an "overboost facility" which allowed an extra wedge of turbo boost. This kicked in when you floored the throttle and gave about 10-15% more torque. You would see the turbo gauge needle swing past the usual maximum point. It was only to be used sparingly and I guess was a good way of preserving the engine and ancilliaries. It was pretty quick in "normal" mode anyway

 

not noticed a diffrence either m8

 

i just keep forgeting i have one

stoooopid place for the button should have put a nice red button on the steering wheel IMO