05-E55

Has anyone else experienced this?

I have headers and primary cat delete and I'm familiar with the exhaust smell on start up but this seems different. More chemical like.
It's happened several times but only after driving the car for a couple of hours. I get a strong chemical smell in the car. Thought I had an exhaust leak but the shop didn't find one. I thought maybe the 2nd cats are failing after they get hot but they said they should work better when hot.
I don't think it's fuel tank issues as it does not smell like gas, more like raw fumes or exhaust to me. Windows up or down I can still smell it. Is it possibly from the A/C? (seems unlikely).
I would appreciate any input.

StarvingArtist

Check and see if you're burning up the fuel pump wiring.

MJ50

sometimes i also get that raw strong gas fume...
some say it's cat gettin' clogged(?)...

05-E55

Where should I look for this? Thanks

MJ50

my smell comes from the front, so i doubt it's fuel pump...

menace2sobriety

Since fitting your headers have you re-torqued the bolts, especially the down-pipe bolts, after a few heat cycles they need to be re-torqued otherwise you can burn out the gaskets, which could be what you are smelling, raw exhaust fumes

- If you get exhaust smell on startup in/around the cabin area you will have a leak

- Also start taking note of your voltage and make sure it stays within spec, when the voltage regulators start to go you will smell a plastic/wire like burning smell

05-E55

How do I check voltage? I know, it's probably a really dumb question for those who know!