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ALG1K, I would have thought that with the horespower that you have power over steer would have been the problem.
I have been chasing a chronic oversteer problem , with nothing like the horsepower that you have. The decision to be made, was the front to soft (400lb springs) or the rear to hard (200lb). After a bit of a rethink, the rear suspension was returned to standard, ie all rear arms connected and and panhard rod that was fitted was removed and throw in the bin. Rear shocks (GAZ) were reset slightly firmer and the I acheived about .5 second improvement in lap times. (1m 13sec lap).
With the change of tyres for next year I intend to try stiffer front spring to start with and take it from there. If you still have under steer it might be worth trying softer front springs. When our cars use to use slick tyres (cross-ply construction) front spring ranged from 500-650lb and rear 300-350lb depending on track surface.
It is interesting that many people, us included, will spend much time and money on trying to get more horsepower, when quiet often for a lot less money the car can be made to handle better and improve the lap times.
I can promote oversteer at a prod of the throttle
Its nice to go into a corner on a trailing throttle and sqirt out
Its just at the moment im getting understeer
Its only happend since i changed the ride height and a couple of settings
Im also running diff tyres
I will try your set up and if its a no no i will try my old set up
I didnt want to go back to it as i wanted a higher ride height
Here is a pick of the ride height and the spoiler has been dropped 1" with a spacer
As you can see its quite high and this is how it raced last week.