Has anyone ever cut the stock coils on ls400 and do you recommend..Its been contemplating in my mind just cutting the coils or heating them I want to do air ride end of year but rather save money on coils or coil overs....Thanks

 

Never do that.
Your stock springs have a specific spring constant, or a constant amount of force to compress them by a given distance.
Cutting them pretty much ruins them and is why drop springs have a higher spring constant.
Heating them is also asking for trouble. It could temper the metal making the springs brittle and possibly casusing one to break in the future.

 

^^^+1
And depending how much you lower it that way, you'll also be looking at dead shocks pretty quickly. Lowering 2-2.5" leaves about 2" of travel in the shock piston, when it bottoms out, bye-bye to the shock.

Wait and do the air when ready.

 

Thanks guys for the advise air ride it is...

 

I have the stock a/s on mines but i am opting to goin to coilovers.. After I installed my 20's the left side is 1" lower then the other side n I don't want to see me car someday on da ground n airbags failed..

 

I say do it if u wanna roll ghetto =P