Gas smell with Downpipes

[bm3nyc]

Running E30 in my M3 no bad smell

[SflBimmer8484]

Originally Posted by gman_newyork

I use the grape scent and I only smell it when parking in my garage and outside the car. Other than that I don't notice any smell. Catless Down pipes with stock secondaries.

I Don't really smell much of anything except for when it leaks in my glove box -_- Im using the Lube based version though and I have primary cats and a high flow secondary

[M4_MLT]

Mine smelled like hell. Went back to stock DP , it was even sticking to my clothes and make them smell like burnt lol

[smashgordon123]

i just put my gintani downpipes on and sitting at stop lights is brutal. My wife / friends have a bigger issue than me.

May try the Evolution 200 cell race catted dP's and see how that does..

[Djdnav]

Originally Posted by Kett3333

Or due to the aftermarket downpipes construction, you have to live with this in order to have peace of mind they won't crack like OEM downpipes.

Thanks

I think you’re confusing downpipes with charge pipes that crack.

[M3nmotion18]

I have the VRSF DP and the gas smells only when I start the car in the garage for few minutes!

[FatRear08]

I find it to be intermittent. When someone comments on the odor, which isn’t bad at all or I’m just used to it, I tell them “that’s horsepower you’re smelling...”

[DaytonaVioletM3]

Originally Posted by gatorfast

Honesty I don't really smell anything with my DPs. I def noticed it on my e90 m3 but not the f80.

I agree with this, I notice no smell with mine either.

[matty088]

Originally Posted by NoMoreAudi

The smell is very strong and noticeable. Not sure how people running "catless" downpipes wouldn't smell anything. Sounds like they have catless dp's that have catalytic converters lol

Aren’t there secondary cats ? The secondary cats must clean up the smell somewhat.

[sna66]

I'm getting catless installed now - guess I'll have to wait an see. Hoping that the secondary cats kill the smell. I've never read a post with such polarizing experiences.

[Zero_Cool]

I had VRSF catless downpipes, AA mid, and stock comp mufflers on my previous f80. I could only notice the smell when I was standing behind the car. The smell wasn’t really noticeable inside the cabin. I think everyone will have different opinions on what’s a livable exhaust smell..

[Trevorstein]

Why is this thread even two pages long, so far?!?

You've removed the primary Catalytic Convertors. What do you think
they were there for in the first place?!?

What did you think would happen?

For those of you that have them removed and don't smell it...

!!You've Grown Accustomed to The Smell!!




Cheers!

[TopJimmy]

I put ER Hi-Flow 200cpi sport cats on stock exhaust with a Stage1 93o tune and got a mild fuel smell (paint shop), no stink.

Upgraded the exhaust from stock to AA Signature full cat-back, which has the 100cpi mini-cat in the second section. No change in smell. The AA Midpipe does not have the mini-cat.

Overall smell seems to be handled by the primary cats in the downpipes.

-TJ

[drgmt]

Be aware loss of smell and taste is a very early sign of COVID 19.

Back on topic - I'm pretty amazed people don't notice the smell from a catless car.

[M4Viper]

Buy a Tesla...no smell or noise.

[SickGTR]

Anyone who says they smell no diff, also believes everything Trump says=) Switching to full E85 will be the best solution! My GTR actually has a sweet smell to it.Only run 85 in it. Have full Akro on the M and is smells like shit. Good luck brother

[sna66]

Day one of having the primary cats removed and I dont smell anything. So it not that I'm used to it. Also with the top down I don't smell anything. Definite improvement overall, the one downside is the inside of the tail pipes are dirty af after a few miles

[Trevorstein]

Originally Posted by sna66

Day one of having the primary cats removed and I dont smell anything. So it not that I'm used to it. Also with the top down I don't smell anything. Definite improvement overall, the one downside is the inside of the tail pipes are dirty af after a few miles

Do you start up your car inside a Garage?!?

[ckendri]

Originally Posted by SickGTR

Anyone who says they smell no diff, also believes everything Trump says=) Switching to full E85 will be the best solution! My GTR actually has a sweet smell to it.Only run 85 in it. Have full Akro on the M and is smells like shit. Good luck brother

While I do not have a very good sense of smell or a GTR, I do have to agree the E85 produces a sweet smell. I can only smell mine when I am behind my car, but again, I can barely smell most things. Last but not least, I am only writing to try to get this thread to three pages in length.

[Arelax]

No way getting around smoke smell on catless

[RevNev]

When you're raised on catless V8's, cams and Holley carbs, a catless S55's odourless in comparison to that

[sna66]

Originally Posted by Trevorstein

Do you start up your car inside a Garage?!?

no I park in the driveway, I started the car this morning, and I can definitely smell it on cold start. i dont smell it while driving though, even with the top down.