Putting in the aluminum flywheel has had a great unintended bonus. My mileage is way up! In stock configuration on California gas (now 91 octane) I used to get around 300 miles per tank of gas, maybe as much as 320 if just freeway driving without traffic jams, as low as 290 with heavier commute use. With the lighter flywheel in mixed city/freeway driving, I'm now getting 350 miles to the tank! With all the driving I do, I frequently fill up twice a week. That's like an extra 4 gallons of gas, and at close to $2/gallon, that means the flywheel will pay for itself within the year. Whoopee!

As for the JWT clutch (stage 1) so far I like how it holds ...

 

Oooo, good selling point! Time for a new flywheel, I really need to save on gas!!!

 

Well, I wouldn't do it just by itself, but if you're doing a clutch job, which I did ... but my clutch, even with 105k miles, was holding up ok ... but then I needed a new trani because I completely destroyed the differential, so all at the same time ... darn you guys for getting me into autocrossing My only complaint is the breakdown couldn't wait for the Quaife. That'll be another post when it gets done ...

 

Well luckily I already have an LSD since Quaife doesn't make one for the 3rd gen. Glad to see you posting again MadMax, haven't seen you around in a while.

 

Just to comment I believe you will get better city gas mileage but worse highway mileage. I've heard people talk about this and it makes sense because in the city there is less resistance when starting from a stop. However, when on the highway the decrease in weight will cause the flywheel to lose it's inertia more quickly which will require the engine to work harder. I could be wrong, but I know the theory applies to larger/heavier wheels because I have 18's
-hype