How do I make a stiffer suspension

So recently, I have been modifying @synsol 's electric SBR4 mod to work with the latest updates, while going through the .jbeam, I wanted to make a race version. Currently, Im stuck with this, Adding and decreasing beam strength does not help. This is what I am stuck with.

Oh and no, I'm certainly not going to release it to the public.

}
"sbr_coilover_R_S_ele": {
"information":{
"authors":"BeamNG mod by synsol",
"name":"S Elec Rear Coilovers",
"value":1100,
}
"slotType" : "sbr_coilover_R",
"flexbodies": [
["mesh", "[group]:", "nonFlexMaterials"],
["sbr_coilover_RR", ["sbr_coilover_RR","sbr_coilover_R"]],
["sbr_coilover_RL", ["sbr_coilover_RL","sbr_coilover_R"]],
],
"beams": [
["id1:", "id2:"],
//rear progressive springs - doubled
{"beamPrecompression":1.12, "beamType":"|BOUNDED", "beamLongBound":0.1, "beamShortBound":0.0},
{"beamDeform":112500,"beamStrength":217500},
{"beamSpring":201000,"beamDamp":0},
{"beamLimitSpring":0,"beamLimitDamp":0},
["psh7r","psh3r"{"soundFile":"art/sound/spring_compress2.ogg","volumeFactor":0.8,"decayMode":1,"decayFactor":5,"pitchFactor":2,"maxStress":1100}],
["psh7l","psh3l"],
["psh7r","psh4r"],
["psh7l","psh4l"{"soundFile":"art/sound/spring_creak.ogg","volumeFactor":4,"decayMode":0,"decayFactor":3,"pitchFactor":1,"maxStress":13000}],
//separate damping and bumpstops to overcome stability limits
//soft bumpstop
{"beamPrecompression":1.12, "beamType":"|BOUNDED", "beamLongBound":1.0, "beamShortBound":0.1},
{"beamSpring":0,"beamDamp":0},
{"beamLimitSpring":201000,"beamLimitDamp":2000},
["rh2r","r1rr"],
["rh2l","r1ll"],
//damper and hard bumpstops
{"beamPrecompression":1.0, "beamType":"|BOUNDED", "beamLongBound":1.0, "beamShortBound":0.18},
{"beamSpring":0,"beamDamp":1400},
{"beamLimitSpring":2001000,"beamLimitDamp":20000},
["rh2r","r1rr",{"beamDampRebound":6500}],
["rh2l","r1ll",{"beamDampRebound":6500}],
{"beamPrecompression":1, "beamType":"|NORMAL", "beamLongBound":1.0, "beamShortBound":1.0},
],

}

 

Spring and damp you want. Not strength

 

Thanks!

 

You can also adjust Ride height and stiffen up Anti-roll bars, to give more "race car", assuming you somewhat know what you're doing