THUNDERCATPT, Hi. I have kept my fuel log since day one. Most of my driving is local commute over 13km each way to work and back. I have logged a total average of 12.57l/100km for that. But longer distance drives, holidays and touring around, in which I usually run in the 110-120 speed range conditions permitting, but with occasional blasts to pass the minnows, I easily achieve 9 - 9.5l/100km.
I hear that the 2007 clutch is "better". Not sure what that means because as others here know, I never had any issues with the original clutch and in fact I like it as it is. I figure folks who routinely stall just lack finesse.
I wouldn't stress over either clutch or fuel burn. Whatever clutch you have softens up in time, as will your ability to deal with it, and fuel costs will vary and influence your wallet more than +/- a few l/100km consumption, especially since you control a lot of that yourself. If you are doing lots of country running, you should shoe-in the 10l/100 limit you are hoping for.
Don't overlook the fact that you are considering swapping a 2.0 litre non-turbo for a 2.3 turbo, so expecting the same fuel burn is a bit like expecting a free lunch. That said, whatever fuel you will burn, whether or less or more, and any concerns about it, will be far and away offset by the extra power you should delight in. You will get a better lunch. I don't know how many Kw the Legacy turns out but it's a given that it's nowhere near that of the MPS. The very tall 6th gear of the MPS gives it ultra long legs and hence great economy but it will still pull stumps and easily carries the car at highway speeds without frequent down-shifts on your long daily runs and thus save you $$. And you will have a better-finished car that performs as cars should.
Last edited by Doug_MPS6; 30-07-2010 at 07:37 PM.
CP_e Standback & PNP; CP_e 3" SS Downpipe; Corksport FMIC with Top-mount K&N filter & OEM Ram CAI; Turbosmart BOV; Dashhawk; Prosport Boost Guage; JBR solid shift bushes; DBA 4000 Wiper-Slot front rotors; Hawk Ferro-Carbon HPS Street front brake pads (@ 69,000km); Sumitomo HTRZIII's in 225/45 x 18