I have one also.
The funny thing is after I installed it, I never fired it up until the next day to go to work.
I remember backing out of the driveway and thinking something feels different. While thinking about it I thought to myself it sure does feel smoother for some reason then, DOH............the light went off in my head and I remembered installing it the day before.
It is smoother through all rpms.

 

I've heard that the tach won't work with the fluidamper, is this true?

 

They do you just have to relocate the pickup to the side with the kit they sell. I didn't have to splice the wire like they say you can just re-rout it.

 

@ 1stGen545 ~

Did you have any issues with the engine cooling fan touching the Fluidampnr? I had to move my heap's fan (and clutch) forward 1/8" to stop the blades from "kissing" the front of the damper.

Just as you, I to didn't have to extend the pickup cable. Just reroute it.

 

My fan did hit the damper also. I think you might be able to put a large washer or two into the hub to sort of space it away.
I just bought a new fan clutch from Napa for a 2nd gen which barely clears.
Wish I had not. This new one is engaged nearly all the time.

 

fan on my 2nd gen cleared by about 1/2". The fan hub sticks out about 1/2" or better than the 1st gen, belt runs in the same place but the fan hub is longer. I had to put a new fan clutch on yesterday morning, it sounded like I had a hand full of BB's in the oil pan. Just glad it stayed on for the drive to town.

 

1stGen545...how do you like the Denny T Power Pen, is it pretty good to write with? lol