RadarP3C

Can anyone tell me what this white stuff is? I tried to wipe it off with a paper towel but it is baked on the tailpipe. It was driven about twenty miles today.

I washed the car a couple days ago and didn't notice anything on the pipes then. I have not done anything different, so I don't think it has anything to do with what I washed the car with. I've never seen this before.

K996

Looks like low grade china fentanyl.
Scrape it off, put it in a small baggie and leave in a conspicuous location downtown?

RadarP3C

What do you think the street value is?

Jim M.

Looks like dried minerals from water coming out the exhaust, but exhaust water is from condensation so there shouldn't be any minerals. Could it be from rinsing the car after your wash?

Foosh

^^^
We're on well water, and I use CR Spotless treated, ionized water for washing vehicles because well water with significant mineral content would leave deposits like this if pooled in the exhaust tips and left to dry.

RadarP3C

This is what I'm thinking and hopefully nothing detrimental has happened. This has never happened before. What has made me concerned is that I've just come back from a 4 day event with the Porsche Wilderness Trail region with 88 cars and 700 miles of twisty mountain roads including the Tail of the Dragon. I was in a group that had three GT3 RS's to try to keep up with. Damn, those things are quick in the turns! This was the first time I really abused the car. (LOL) Very fun!

CodyzWorld

I run with GT3's and GT3 RS's all the time in the canyons, yes they are fast. Coupled with a pilot that has a death sentence and they're 9/10 through the twisties.
I had Cup 2's on my last set of rims and switched over to 4S's. No chance. I found myself pushing the 4S's to the limit and that's not too much fun for me.
To me, the only way the TTS can somewhat come remotely close to the GT3/RS is to run Cup 2R or Trofeo R's - extreme track alignment and extreme throttle control.

As far as your original inquiry - perhaps since this is the first time you pushed it hard, it's the balance of raw fuel and heat through the exhaust? I suppose you pushed it hard
on sport or sport +, very different air/fuel mix than regular mode.

RadarP3C

@CodyzWorld Yes, this was the hardest I've pushed the car. Sport (+), manual shifting, and probably an average of 4K or higher rpm all day. I was out of my comfort zone a couple of times with the tires (Pilot Sport 4S).