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12,590 Posts
Here's the driving impression after 4000+ miles: This is an excellent mod! The car's response isn't as dramatic as going from a two piece 40 lb flywheel to an 11 pound flywheel. The OEM flywheel weighed 16 lbs 9.8 ounces, the Fidanza measured 9 lbs 2.8 ounces (less than the advertized claim!) on the postal scale when D and I weighed them.
Here's the biggest plus: It is much easier to rev match, and I don't have the jerky throttle when I'm at low speeds on cold cycle. The engine is much smoother, and when I step on the gas the response is more immediate. It doesn't feel like we added 40 hp, but it does feel like we took 100 lbs off the car.
As a side benefit, it is much easier to control the engine speed, and throttle modulation does what you expect. No more complaints about the throttle by wire being slow to respond. It isn't. It's just too much rotating mass in the engine. The Fidanza cures this to a point where I don't notice issues with downshifts. The only downside is the revs fall faster too, so you have to keep your foot in it a bit deeper when upshifting. Truly a small price to pay.
I'll add to this after I've finished gathering the numbers. Two word recommendation? GREAT MOD!!!
Here's the biggest plus: It is much easier to rev match, and I don't have the jerky throttle when I'm at low speeds on cold cycle. The engine is much smoother, and when I step on the gas the response is more immediate. It doesn't feel like we added 40 hp, but it does feel like we took 100 lbs off the car.
As a side benefit, it is much easier to control the engine speed, and throttle modulation does what you expect. No more complaints about the throttle by wire being slow to respond. It isn't. It's just too much rotating mass in the engine. The Fidanza cures this to a point where I don't notice issues with downshifts. The only downside is the revs fall faster too, so you have to keep your foot in it a bit deeper when upshifting. Truly a small price to pay.
I'll add to this after I've finished gathering the numbers. Two word recommendation? GREAT MOD!!!