I know there probably are too many possibilities to be sure, but I thought I'd ask just in case.

Symptoms:
1) CEL
2) Funky egg smell to exhaust, bad with 87 oct fuel, much better (less smell) with 93 oct fuel.

(I have the OBDII tool, but I don't have a laptop, so I have not had a chance to check the codes yet.)
BTW- anyone got a laptop they want to trade for some stereo equipment? I do installs as a side business, so I have a lot of cool gear laying around.

History:
CEL and smell started intermittantly and progressed to constant about 6-7 months ago. Had dealer pull codes and got both banks lean, and MAF failed. They wanted $120ish for a new MAF, but I found a 75mm Proflow and KKM filter on eBay for $60 laugh So I put those on. The MAF is calibrated for the SE engine, but I think I recall the guy saying it was set up for the stock airbox, not the KKM open element. Not sure on that. Does it matter?

Still have the stock plugs & wires, but no obvious problems with them either, runs smooth, starts easy, etc.
(Yes, I'm calling Bill today to order the FMS wires and ? plugs.)

Anyone have any thoughts?
Thanks,
Dave


98.5 SE/sport/MTX
Brembo rotors w/KVR front and Mintex A/F rear
Pro-Flow 75mm MAF w/KKM filter-Nice!
Mobil 1/K&N oil
ES MM inserts waiting-I can't get the bolt loose...need a bigger breaker bar:(
Aussie Bar and Euro ST200 struts soon!
Major mods to stereo system
Clarion 9255
All Phoenix Gold processors/MPS amps!
Vifa/Adire drivers