Since the S4 has factory HIDs, you can't reuse your existing headlight subharnesses. ECS sells adapter harnesses which will plug into the harnesses in the car and connect directly to the S4 lamps. Quick and painless.

 

Alright so financial harships have set back any progress of my car recently. However I was able to fix one of my two misfires. Unfortunately my Cylinder 3 misfire remains after replacing the coils and spark plug. Also the diverter valve is "fluttering" and from what i understand this can mean a vacuum leak.

What would you say is the causes of these remaining issues?

I know that fuel injectors may be the issue but i dont want to shell the cash out if if I dont have to if it is something stupid.

 

The OEM DV (assuming you still have it) uses a rubber diaphragm that gets old and brittle, as rubber does, and eventually tears. I would pick up a 710n DV designed for use on the 225hp MkI TT and throw that bad boy in there. More stout design, OEM fitment, and they can be had for like $30 on ECS.

 

That's what i was looking at getting just because of how cheap they are, thanks. Any ideas on the continued misfire? Could the two be related or just seperate issues all together.

 

The ICM in these cars are weak and are a known problem. Most have deleted it but that would require you to convert your harness and get the 4 prong coil packs. I was chasing a mis fire in my car and finally did the conversion. It has not misfired a single time since. If you go to a parts yard you could find the harness and COP's for fairly cheap and it is not that hard of install.

If you are needing fuel injectors I have my stock ones you can have for shipping which should not be more then $6. They were working fine when pulled but their looks is not the best. Still it could save you having to buy a new one.

 

I would really appreciate it man I'll pm you.