Will more conservative waste gate setting save fuel?

[bkoeth]

I just replaced the wastegate actuator hose in my 97 850T5 because a hole in it was allowing the car to boost beyond the white and I had to be careful not to engage the fuel cutoff. Now it only boosts 2/3 into the white (spikes to 3/4 during a shift) and the car is noticeably slower (but still fast).

Please tell me this is saving gas, or in some other way beneficial, otherwise I will go out and cut a hole in the new hose! Just kidding, the whole thing is temporary until I get an MBC, but still, will a more conservative setting on the MBC save fuel?

[White850Turbo]

Less boost = less air entering the cylinders = less fuel required in the cylinders. So in short, yes, less boost will save gas.

On your MBC note, I'd recommend against it, especially if you're not chipped; could cause you to lean out and blow something up. When you do get chipped and want a boost controller, go electronic. There's a world of difference, and it could just save your engine.