If you change your cat's litter box on a regular basis, it won't smell.

 

Depends on where the refinery received crude oil [sulfur content] that day and what the end result of blending and storage in tank farms was?
Different gasoline will emit different smells with the same cats, what happens across US.
http://www.ornl.gov/info/ornlreview/.../emissions.htm

 

+1 I was just gonna post this, i have the same vlad, and they only smell when my car is cold, and its cold outside, but after driving and they get hot, i dont smell really anything

 

^thanks guys i will look into those in the future.

 

I had Crawford HFC's and the only time it smelled was after the install. The smell completely went away after 2 weeks or so.

 

I wen't with Fast Intentions resonated test pipes instead of HFC.

Do they smell? Hell yes, but it doesn't bother me

First time I started up my car, it was in a closed garage. Big mistake

Actually, its not that bad. Either that, or I already got use to them. I really don't mind at all anymore. The only time I can smell them is at start up (windows down) or when I stop at redlights (windows down).

I have zero regrets of going with my FI Resonated Test pipes over their HFC. Cheaper, louder (in a good way), lighter, and should yield a little more power over HFC, especially with a tune since it does lean out the AFR more than HFC would (car feels sluggish from all my breathing mods- need a tune).

.

 

^man im so tempted to go with TP as well but so scared of pigs.

 

Marinated in Lawrence’s KBBQ sauce makes cats smell (and taste) great!!!

I'll bring some to the track Vlad

 

Crawford HFC here... I don't notice the smell unless I'm directly standing behind the car... and even then it's not that bad. Check it out @ CS

 

even OEM that's not a good idea

 

Haha I know. I was starting up the car with the intentions of opening the door right away... it was too late by then (seconds later)

.

 

How louder did the TP make your exhaust sound? Any Rasp? I am looking into it for future references. I just dont want it rasping, using FI Exhaust right now with Kinetix HFC, no rasp.

 

Berk Metallic - More Smell at startup, as usual during normal operation

 

Just installed my FI resonated Test pipes yesterday and have question. Do these cats needs a "brake in" period. Because at WOT im getting rasp throughout the rev range. Im just wondering if the rasp will get louder or quieter as the time goes by. Also i have a "blow off valve" sound when the rpms are coming down and that sound comes on at exactly 2300 rpm and goes away. Does anyone know why?

BTW my car makes the sickest sound at half throttle.

 

OK - first - they are not CATS - they are TESTPIPES....

Resonated testpipes, and any exhaust part for that matter, will need some break in - though resonated testpipes don't need much - maybe 50-100 miles.

Which exhaust are you running with them?

Rick