D&D shift assist

[DamageInc]

Has anyone here tried out a D&D shift assist? If so, what were your results? I just put one in my C7, and I can't wait for the first snow to try it out.

[5 Spot]

I ran one all last season (F7). Made a huge improvment on backshift and seemed to keep the spring from binding at the top end. $20 well spent.

[DamageInc]

I ran one all last season (F7). Made a huge improvment on backshift and seemed to keep the spring from binding at the top end. $20 well spent.

Did you also change the secondary spring, or leave it stock?

[5 Spot]

Did you also change the secondary spring, or leave it stock?

When I put the shift assist in, I put an '07 orange sec. spring, which worked fine but my midrange seemed to suffer. Over summer I put the stock green one in and cranked it in about 1/4" & put in shims to hold it there. BUT, all that was with a 1" track w/153 studs, now I put a 1.375" track on and when I was going through it this summer I noticed my APV's were all carboned up, so that could have affected my midrange too. So, with clean APV's and a bigger lug, I'm kinda back to square one. One thing I have noticed though is that the bigger lug tracks need to be tuned quite different than the 1" due to the torque feedback. Running the 1" though I could hit 105 mph no problem (GPS) and GPS'd as high as 118. I'm tuning the 1.375" for hardcore trail, no so much top end. One interesting thing though when I took off the 1"/studded, I weighed both tracks:
1"/153 studs/clipped every 3rd= 42.5lbs.
1.375"/fullyclipped/no studs= 39.4lbs.

[DamageInc]

Earlier today, I took the first ride on the C7 since adding the orange spring in the secondary and the shift assist. I have no idea what will happen with my top speed yet, but my backshift is friggin unreal (compared to stock), and acceleration was excellent, so I have high hopes for it. Can't wait to hit a nice hard packed lake. But to be honest, I don't know if I would change it now, even if I haven't gained any top speed, because the "trail" performance is so improved. If I do anything more, it will be adding one of the conversion kits to go to the torsion secondary (rather than the F-ing retarded compression-spring secondary that they used with the DD).

[catman69]

Just got 07 f8 sno pro, the low end and top end are lacking. Seems to shift too early on low end and not at all on the top end. I noticed your post and was wondering if the shift assist would be of any value???