[turugara]

When I first got a catless system earlier this year, it never smelled on the highway. Now, even going at 90mph, I can smell the catless system.

Could it be am exhaust leak? Only occurs with windows down. With windows up and AC there is no smell.

[turugara]

Bump?

[Sauer]

I'm catless and I only can smell it when I'm idling and the wind is blowing the fumes towards me. Driving around town or on the highway, there's no odor at all.

[drewmeyer87]

It's the guy in front of you!

[turugara]

Originally Posted by drewmeyer87

It's the guy in front of you!

Haha doubt it. I can smell it when I just have the sunroof open going by myself

[themyst]

It's real annoying to me. I'm actually thinking about putting my stock Rear cats back on because of the smell.

[gzim335]

Originally Posted by themyst

It's real annoying to me. I'm actually thinking about putting my stock Rear cats back on because of the smell.

+1
its embarrassing at a light my car almost gets covered in smoke n people look at me lol

[turugara]

So I'm guessing it happens to you guys too?

[Fully_Bolted]

Never happens to me. Only at lights do I occasionally smell it.

[poloace]

I only smell mine in the garage and have never seen any color to the exhaust

[Dave W.]

Some cars run cleaner than others. If the turbos are starting to go bad they'll put a little oil in the exhaust which adds extra stink to the exhaust.
Aftermarket downpipes are tricky to install and seal at the turbo. If you've installed DP's and the V-band clamp didn't clamp down all the way (needed a longer bolt to fit?) then there could be a gap that lets exhaust out.

[07tundra]

the answer to the smell is 100cell cats had the exact same problem. I even started a thread these hi flow cats i put on got rid of the smell but still flow.

[zeenon53]

I don't mind the smell but i've never had a cloud of smoke. That's just terrible. I would throw some high flow cats on if it smells or smokes bad.

That's really interesting. I would imagine you do have a leak somewhere. There's no way you can smell the exhaust going 80 if everything is buttoned up and the exhaust gasses are only coming from the tailpipe.

[07tundra]

Originally Posted by zeenon53

I don't mind the smell but i've never had a cloud of smoke. That's just terrible. I would throw some high flow cats on if it smells or smokes bad.

That's really interesting. I would imagine you do have a leak somewhere. There's no way you can smell the exhaust going 80 if everything is buttoned up and the exhaust gasses are only coming from the tailpipe.

Thats what i thought also the smell shld be left behind but the way the air flows off our cars it brings it back somehow. I had no leaks but still smelled the fumes.

[TunedM2C]

Add some E85 into the mix.