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Ride height section
Ride height effect on acceleration
Red is 85/85, blue is 130/130. Both using 20/20 spring rate.
  
 
The effect is greater than spring rate, low ride height have much slower acceleration but also have a bit faster braking
Drag ride height vs high ride height
Red is 85/130, blue is 130/130
  
  
 
drag have faster acceleration, and little slower braking.
Ride height effect on FF car acceleration
Civic Type R.
Yellow using 135/135 ride height, black using 89/89 ride height, both using 20.0/20.0 spring rate, 24/24 BBC.
  
 
Black is faster, so using low ride height on FF can make the car faster. I think this is caused by weight transfer. Using low ride height, the weight transfer is less, so the front wheel that move the car has more traction, which make it has better acceleration.
Additional test
Drag vs low ride height acceleration
Yellow : 89/135 ride height
Black : 89/89 ride height
  
In this test we see that using drag height can give faster time, the acceleration differences seems bigger on high speed.
My Opinion
Ride height will:
- increase weight transfer, affect body roll (camber) and brake balance (BBC)
- increase steering response, affect damper and stabilizer.
Changing ride height will also need changing:
- Damper, try make the wheel return to zero after bump before encountering next input. See from the wheel cam. Too soft will make the wheel return to zero too quickly, make it overshot. Too hard will make the wheel don't have time to return to zero for the next bump.
- Stabilizer, treat like sideways damper.
- Camber, increasing height will make the wheel more angled during cornering (more body roll), so, you have to increase your camber when you increase the ride height.
- Brake controller.
We can use ride height to:
- Reduce oversteer / increase understeer, increase front height / reduce rear height.
- Increase oversteer / reduce understeer, reduce front height / increase rear height.
- As body roll is not wanted in grip and drift driving, try using height as low as possible. Except you want slower response car.
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