Has anyone every had a chip combined with a MK4 VR6 head gasket. I've heard it can cause knock problems because the timing is too advanced. Something to do with the increase in compression. Would a custom remap solve this problem. I'm just trying to decide whether to put a MK4 head gasket in or not. I'd love to increase the compression for the extra horses but don't want to give myself problems with it. If a Stealth remap could work with the HG and keep the timing correct then i'd do it. Should be a nice mod to bump the numbers a little. Need some advice here. Thanks Baz