I developed a missfire and since I've replaced all plugs with ngk platinums and bought 2 new sets of plug wires. New coils. Fuel pump. Fuel filter. New injectors and I can't find the miss. It no longer throws a code but it's a very apparent missfire. It's a 99 SL. I'm also on like my third set of plugs because I replace them every time I change another part. Any help would be appreciated. Ive also replaced the ignition control module.