Motorway speed causing lots of bounce!!!

[Hammie]

Took a proper spin in the car last night, First time going more than 10mins in it since I put the coilovers in!!!
The ride is firm, just like i wanted..... BUT the rear end is bouncy as fek on the motorway, I had to slow down at 1 stage down to 90kmh to stop it from bouncing!

Basically what would take the bounce out of it? Upgraded ARB? etc..... Dont want to go spending money on the wrong thing just at the minute!
the coilovers arent in bad condition so i know its not a problem with them!!!

any suggestions appreciated!

 

[hiwd]

I've standard ARB's on mine with the coilovers on the hardest setting and she's fine on a motorway, it'll only bounce when the road actually gets bad. Are both rear left and right coilovers the exact same height? I'd double check that...

Steve.

 

[Hammie]

Im going to drop the backend a little more anyway so ill check that tonight actually......

Was looking at the Rear ARB and its very flimsy lookin on my car!!! Maybe saloons and Wagons have different rated rear arb's?
Front end is well planted and very very stable.... Just the rear end is not as planted as i would like!!!

Cheers Steve....