IS200t Downpipe
Thread Starter
Racer
Joined: Feb 2012
Posts: 1,729
Likes: 409
From: South FL
Pole Position
Joined: Oct 2016
Posts: 306
Likes: 40
From: Ca
It is normal, my car smells horrible too. I expected the smell to get more subtle after putting on some miles but it hasn’t gotten any better. My friend has a downpipe on his 340 and it doesn’t smell as strong even with a bigger engine for some reason.
Lexus Test Driver
Joined: Mar 2016
Posts: 9,523
Likes: 2,582
I honestly would keep your cats, guys. or at least hi flow. The compromise isn't worth it. At the end of the day it's still a 3,600 lb car (at best) with less than 300hp doing a 14 sec 1/4 mile at best.
If you're going to put up with exhaust smell, at least rock an RS3 pushing 10s/11s.
Even then I wouldn't put up with that personally for daily driving. When I go to work I don't want to be smelling like a gas station.
If you're going to put up with exhaust smell, at least rock an RS3 pushing 10s/11s.
Even then I wouldn't put up with that personally for daily driving. When I go to work I don't want to be smelling like a gas station.
Lexus Test Driver
Joined: Mar 2016
Posts: 9,523
Likes: 2,582
Little story.. back in the day my friend's supercharged E90 M3 (600 wheel) was decatted.... the fumes so strong after just a little while driving, the smell of fuel in the interior was immense. my clothes smelled so so so strong when i got home and my face felt extremely oily from all the fumes. i had fuel dripping off of me. it was intense. left a bad taste in my mouth (literally) ever since
car was a beast though. 200mph easy... don't ask me how I know. =/
car was a beast though. 200mph easy... don't ask me how I know. =/
Pole Position
Joined: Oct 2016
Posts: 306
Likes: 40
From: Ca
Little story.. back in the day my friend's supercharged E90 M3 (600 wheel) was decatted.... the fumes so strong after just a little while driving, the smell of fuel in the interior was immense. my clothes smelled so so so strong when i got home and my face felt extremely oily from all the fumes. i had fuel dripping off of me. it was intense. left a bad taste in my mouth (literally) ever since
car was a beast though. 200mph easy... don't ask me how I know. =/
car was a beast though. 200mph easy... don't ask me how I know. =/
Thread Starter
Racer
Joined: Feb 2012
Posts: 1,729
Likes: 409
From: South FL
Same here. I only get the strong smell if i am standing at the back of the car, but no smell inside at all. I did not notice any power difference between the sport catted and de-catted, so if your buget allows for a catted then i would recommend it.
Pole Position
Joined: Oct 2016
Posts: 306
Likes: 40
From: Ca
I don’t know about longetivity but it won’t have a negative effect in performance. Im running a downpipe with no tune and it actually still increases performance a little bit
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Driver School Candidate
Joined: Feb 2018
Posts: 24
Likes: 1
From: Singapore
A tune will further enhance the performance. Even without one, you can feel its much more revy than stock and BMS. If you are getting from TTI a catless one, make sure they send with the proper bypass.
Pole Position
Joined: Oct 2016
Posts: 306
Likes: 40
From: Ca
It sucks to hear you’re having all these issues. Mine is catless also and I used all the stock hardware to install. I didn’t replace the vband or gaskets and I don’t have a CEL
Instructor
Joined: Jul 2016
Posts: 782
Likes: 119
From: SoCal
Do you know what CEL code is being given? P0420?
Instructor
Joined: Jul 2016
Posts: 782
Likes: 119
From: SoCal
Try a longer O2 sensor adapter with a smaller inlet. I went through like 3 of them and found one that works.
PPE customer service is fantastic btw.
I used this o2 adapter
It worked great but it was a bit long and the O2 sensor wires were awfully close to the transmission. I didn't want them to get damaged by the heat, so I installed a 2 piece 90 degree spacer and installed the o2 sensor in the link above. Everything has been perfect since. *knock on wood*
PPE was great in customer service but unfortunately none of the spacers they sent me worked.
PPE customer service is fantastic btw.
I used this o2 adapter
It worked great but it was a bit long and the O2 sensor wires were awfully close to the transmission. I didn't want them to get damaged by the heat, so I installed a 2 piece 90 degree spacer and installed the o2 sensor in the link above. Everything has been perfect since. *knock on wood*
PPE was great in customer service but unfortunately none of the spacers they sent me worked.