Quote Originally Posted by Hektik View Post
dont want cheap coilovers I prefer good handling

If good handling is what you are after do not heat them. You can heat them and ride low, however the ride will be rough. The lower center of gravity will give you a false feeling of better handling but it will be just that, false. To answer your question yes heating the springs does alter the structural integrity of the steel, otherwise they would not weaken and collapse under the heat. I'm not telling you to not do it cause honestly I've done it several times. Just don't expect to get anything out of it but altering ride height. Spring steel undergoes a strict process to get them that way, so unless you just wanna be low, and not try to be a "racer", do it the right way.