Originally Posted by TryHard

How did you have the ULPs setup?
So far in my testing there are a few things that need to be considered for the ULPs. However do bare in mind that the majority of my running has been with PSS (mod asphalt)
Firstly, you want to run softer oils in the ULP vs the SLP. In the SLP, i wpuld run 550 or 500 hudy oil. The ULP 450 or 400 oil is the go.
Secondly, is related to the shock gap. I've done quite a lot of running now with the ULPs and have tried various gaps to tune the PSS. On the SLPs I would use 9.5mm. For the ULPs originally set with 9mm gap, and frankly was crap, no grip, and the car felt it was too heavily damped.
Tried 8.5mm and 8mm, both of which improved the car, by softening the action.
Personally, i have now settled on 400oil with 8.5mm gap. And car is just as fast with ULP as SLP.

For std pistons, i would be looking at 400 or 350 oil to start, and work from there.

HiH
Ed