I can't figfure out how to stop smelling like my car. The pics are below. Everytime I'm in boost, I can smell the exhaust coming in the car. My vents are closed and everything. What's confusing is that it's only under boost. Not at regular cruising speeds. Is there a way to completely cut off the air flow to my vents or whatever is letting in air. I do have one assumption. My catch can vents. I'm still trying to get used to using photobucket. So I may edit a couple times to get the pics in right.

 

Your catch can is blowing fumes right into the cowl at the bottom of the front windshield, which is supposed to let fresh air in.

 

exhaust leak

 

wow, that just may be it. Is there any way I could block that off? I don't really need fresh air I have dark tint and have to ride with the windows down anyway.

 

I thought that at first. But I only get the smell after boosting. So it just may be the blowby going to the can and the fumes seeping out of the breathers.

 

try taping off the window vent and see if it still does it.

 

yeah i'll try that and see if it helps.

 

Do you have a open dump tube? Could be the smell of that coming back in. Put your vent on recirc inside the car and the car will now recycle the air in the car instead of pulling from the vent next to your catch can. But if you have an open dump tube, that wont fix it, you will always smell it unless you plumb the dump tube into the downpipe.

 

Yea my first guess was the dump tube. How do you have it ran?

 

I do not have any testing to prove this but judging by how dirty my firewall is I would say that the air swirls from underneath the car up against the firewall and exits near the windshield when you do not have the black factory splash guard installed at the front bumper. This will allow ANY leak to go aft and enter the fresh air vent. If you have a slight exhuast leak anywhere from the manifold to behind the oil pan it WILL leak under boost due to the higher pressure and velocity of the exhuast under boost. Check for little wisps of black on your exhaust connections to see any leaks you have.

 

putting it in recirc mode would be the easiest.

 

I had the same problem with my catch can. I hate having a catch can there.

 

Yeah put the blower on recurculate

 

i went through this SAME situation....i hated it. i ended up plugging up all the air intake vents at the firewall. it solved it.

 

my breather tank is in the same spot, but it's not bad enough to annoy me just yet. recirc is a good option