I'm not running cats so I know there will be a little smell. I just got a tune last Friday and all day Saturday I smelt no fumes at all. Sunday my ses light came on and it's showing low voltage to bank 2 knock sensor. After that my nasty rich smelling fumes are back. Should I take it back to the tuner?

 

You need a new knock sensor. That will help some but without cats you will always have a fuel smell. I have a great tune on my car and it still stinks.

 

Well like I said before my ses light came one Sunday there was no fumes. Think the ses light retarded the timing? Would that cause fumes? It runs fine though

 

ur knock sensor is out........... causing to run rich

 

I thought that might be the problem.

 

I think so, but wouldn't that cause it to run rich?

 

It could cause it to run rich. I would replace it and go from there. I can tell you though I have had 3 cammed F-bodys with no cats and every one has had a fuel smell. My G8 had Kooks headers and highflow cats and it didnt have any fuel smell. Cats make all the difference in smell.

 

i have a cammed 402 and the first day had no cats, and our cloths smelled really bad from fumes, then for a year i had high flow cats and was ok, this spring i put 4'' exauste with muffler and found it to be not loud enough so i took my cats of and the smell is back, will be putting the cats back on.

 

i stink everytime i get out of my car, its from running no cats. gotta deal with the smell or put cats back on, i hate it myself...

 

I love it... not sure how you guys can complain.


SMELLS LIKE AMERICA

 

I second that...

Personally reminds me of when I was little going to car shows with my parents and walking behind muscle cars as they were running...ah the rumble and oh the smell does it all.

 

love the fumes
so use to it dont even smell it anymore

 

Haha! never thought of it that way.
I just hate walking in somewhere and still think i'm in my car lol. I could deal with the smells if they wouldn't follow me around

 

LOL at smells like america!

 

i replaced both knock sensors and the fumes arent near as bad and no ses light. maybe it did retart the timing, idk, i would think i could tell by the way it ran but who knows..

 

Alot of times the smell is from to much timing at idle.

 

Unburnt hydrocarbons and Blue Label, the scent of a man.