So you shaved off a few grams I think your setup is ok.

You didn't lose enough weight to warrant lighter oils or springs. To be honest, any advantage you gain will likely be psychological.

you will love your truck more

The Smart diff seems like it would be cool, but they really don't help with anything. From my experience at least. I really didn't like the SD although I only have run the center. The truck just feels more consistent with the standard diff IMO.

Anyway Frank, give the standard diffs a try and see how you feel about it.

The standard diffs are best on a smooth track with med to high bite. The Smart diffs work best on bumpy or loose tracks with low to med bite.

I usually switch them based on what tracks I'm running at.

Maybe that's the problem I have had with the SD. I usually run on high bite relatively smooth tracks. Not always, but usually and that is where I have done most of my testing with them. I guess I will have to try the SD again next time I'm on a loose, bumpy track.

my truck pushed with the sd, i thought i was fast with it becuase i never ran with out it but once i switched night and day...turned on a dime

Yep that is how I feel about it too. Seems like it stays locked too long for my driving style. Now to be fair, I only ran it a very little bit before pulling it out(because of how bad it was) and I didn't mess around with it's setup at all. Just packed it with grease and ran it. Pulled it out after about 5 minutes, went back to my standard diff and haven't looked back since. But some buddies of mine ran theirs for longer and tried many different greases/fluids with it as well as different spring combos, and the result was the same as mine.

yea it does, i dont stay off the throttle that long

Yeah it just seemed to take a split second too long to unlock after I let off the throttle. When I let off, I want the truck to do what I tell it to, not plow through the next corner.

right, there for the sd is not for guys like us

I really love the Smart diff on dusty tracks with low to med traction. You get a bit more off power steering but at high speeds it likes to push a bit. It really smooths out the diff response and keeps the wheels from spinning too much.

The standard diff has a bit less off power steering, but no high speed push. On high traction tracks, the standard diff is all I will run. It's much more responsive with throttle input.

I must say, I really enjoyed the SD this past weekend, first time I used it. I did however use 2 x 20 springs and 2 x 15 springs. I had no push at all, great drive out the corners and awesome turn in. Perhaps if you guys used heavier springs it would help with the diff unlocking quicker? I could accelerate much earlier than I could with the standard diff and no push at all out of corners under power.

I will be doing back to back tests in the next couple of weeks, just to check the difference.

I found the same as most have mentioned with the smartdiff
they work great on a loose and loamy track. but on a track with a little traction they have a lot of push
i run them fulltime in the center of the buggy with 4x.020 springs and they work great but even on a loose track i dont see a massive advantage with them in the truggy. im just as fast with the stock diffs

mabe it had to do with driving styles... i increased my lap times with out the sd on any track i went to...

on loose tracks i still run the stock diffs and compensate with doing tthings to setup etc..and im fine.