2012IS250

so I just got my oil changed on Friday and yesterday I took it up 9 and 35, for those of you who know who that is. I was doing my usual drive but I pushed it somewhat and after a good 5 minutes, the engine started smelling. At first I thought it was my brakes but the more I pushed it, the more obvious the smell was so I let off for a good while before pushing it again on 35. I found it weird that it did that especially since I just got the oil changed the day before and I actually drove around for a bit before I did the mountain drive yesterday. There was a dirt bike behind me (on my tail) and there was an accord in front of me (was trying to keep up with him but my nittos wouldn't allow me to). What could be the possibilities? Thanks!

dfwjohnd

iTrader: (6)

did you fart?

LexusGuyyy

What kind of odor would you say it was? When I usually push my car, it emits rotten egg odor usually coming from the catalyst converter

2012IS250

nope, had a girl in the car, definitely wouldn't do that LOL.

I don't have my cats on and it just smelled like it was engine, smelled burnt.

twojayzee

Oil on the exhaust, from the shop

FSportIS

iTrader: (13)

Did you spin the tires when you accelerate? It could be the tires that smell.

Now, the bigger question is, does the smell go away or does it start whenever you start your car?

Gville350

iTrader: (10)

Are you running your stock headers? If yes, then you still have cats.

2012IS250

no, I never spun once, I had traction the entire time. The smell went away, it was only when I was climbing uphill on 9.

I'm running stock headers, I'm just not running my two catalytic converters.

FSportIS

iTrader: (13)

Don't worry then. The engine just farts a little lol. If it keeps doing it, report back in.

Gville350

iTrader: (10)

You are still running two stock cats then :



Check out the pick of the stock headers vs an aftermarket unit w/o cats.

islandbeef

2012IS250

Mine don't look like that.

Gville350

iTrader: (10)

Then they're not stock. Hmmmm.

2012IS250

They are LOL the invidia midpipes replaced them. I floored it again on the highway, at first I smelled it again but after like 5 seconds, it went away.

mike33

iTrader: (1)

""""I'm running stock headers, I'm just not running my two catalytic converters."""""[/QUOTE]

Your car came with four catalytic converters, the ones that are removed with the installation of an aftermarket mid pipe are the secondary cats... The ones gville shows in the picture, that are attached to the factory exhaust manifolds, are the primary cats...