Ok guys, maybe this is a dumb question but I have always smelled a kinda gassy kinda sulfer like smell in the cab when I punch it with the windows down. Its very distinctive and just so you know I have checked for exhaust leaks (ive had this smell even when I had stock exhaust). Is this a valve...WTF?

 

probably normal, my truck did that long ago, i think it was belt slip maybe. run a search for it, there was a post about it years ago

 

been talked about a lot before, haven't heard about it lately. A quick seach mind find you some info but from what i recall no one knows why, but its normal.

 

Mine smells to almost allways under boost after I let out of it? I dont care..It runs like stink

 

same here, my theory is oil in the intake bgetting sucked in with the more PSI + more air being sucked in. but could be slippage. I hav eonly a 5lb lower

 

I made aq post on this a while ago. I had that smell and noticed it also when I turned on the fan. It turned out to be a loose plug! There was no exhaust leak sound. Just the smell. Changed the pulgs and noticed one plug was 90% out. After the plug change the smell went away 100%.

Not sure if this is your problem but I thought I would mention it.

 

welcome (see you only have 3 posts)

if it smells like ROtten eggs = bad catalytic convertor.

 

Yeah im not new, I had to sign up with a new name, I forgot my old user name. Thanks for the help, I'll do a search and see what else I can find. It dosnt bother me Im just trying to figure out what exactly it is and why. Thanks.